Update version numbers to 4.5.0 for EPICS 7.0.2.2 release

address issue #53 plus more for getDouble, putDouble, getString, putDouble, etc

.ci/travis-build.sh

@@ -1,21 +1,10 @@
 #!/bin/sh
 set -e -x
 
-# set RTEMS to eg. "4.9" or "4.10"
-# requires qemu, bison, flex, texinfo, install-info
-if [ -n "$RTEMS" ]
-then
-  # find local qemu-system-i386
-  export PATH="$HOME/.cache/qemu/usr/bin:$PATH"
-  echo -n "Using QEMU: "
-  type qemu-system-i386 || echo "Missing qemu"
-  EXTRA=RTEMS_QEMU_FIXUPS=YES
-fi
-
 make -j2 $EXTRA
 
 if [ "$TEST" != "NO" ]
 then
-  make tapfiles
+  make -j2 tapfiles
-  make -s test-results
+  make -j2 -s test-results
 fi

.ci/travis-prepare.sh

@@ -3,35 +3,6 @@ set -e -x
 
 CURDIR="$PWD"
 
-QDIR="$HOME/.cache/qemu"
-
-if [ -n "$RTEMS" -a "$TEST" = "YES" ]
-then
-  git clone --quiet --branch vme --depth 10 https://github.com/mdavidsaver/qemu.git "$HOME/.build/qemu"
-  cd "$HOME/.build/qemu"
-
-  HEAD=`git log -n1 --pretty=format:%H`
-  echo "HEAD revision $HEAD"
-
-  [ -e "$HOME/.cache/qemu/built" ] && BUILT=`cat "$HOME/.cache/qemu/built"`
-  echo "Cached revision $BUILT"
-
-  if [ "$HEAD" != "$BUILT" ]
-  then
-    echo "Building QEMU"
-    git submodule --quiet update --init
-
-    install -d "$HOME/.build/qemu/build"
-    cd         "$HOME/.build/qemu/build"
-
-    "$HOME/.build/qemu/configure" --prefix="$HOME/.cache/qemu/usr" --target-list=i386-softmmu --disable-werror
-    make -j2
-    make install
-
-    echo "$HEAD" > "$HOME/.cache/qemu/built"
-  fi
-fi
-
 cat << EOF > $CURDIR/configure/RELEASE.local
 EPICS_BASE=$HOME/.source/epics-base
 EOF
@@ -39,24 +10,6 @@ EOF
 install -d "$HOME/.source"
 cd "$HOME/.source"
 
-add_base_module() {
-  MODULE=$1
-  BRANCH=$2
-  ( cd epics-base/modules && \
-  git clone --quiet --depth 5 --branch $MODULE/$BRANCH https://github.com/${REPOBASE:-epics-base}/epics-base.git $MODULE && \
-  cd $MODULE && git log -n1 )
-}
-
-add_gh_module() {
-  MODULE=$1
-  REPOOWNER=$2
-  REPONAME=$3
-  BRANCH=$4
-  ( cd epics-base/modules && \
-  git clone --quiet --depth 5 --branch $BRANCH https://github.com/$REPOOWNER/$REPONAME.git $MODULE && \
-  cd $MODULE && git log -n1 )
-}
-
 add_gh_flat() {
   MODULE=$1
   REPOOWNER=$2
@@ -71,23 +24,12 @@ ${MODULE_UC}=$HOME/.source/$MODULE
 EOF
 }
 
-if [ "$BRBASE" ]
+# not recursive
-then
+git clone --quiet --depth 5 --branch "$BRBASE" https://github.com/${REPOBASE:-epics-base}/epics-base.git epics-base
-  git clone --quiet --depth 5 --branch "$BRBASE" https://github.com/${REPOBASE:-epics-base}/epics-base.git epics-base
+(cd epics-base && git log -n1 )
-  (cd epics-base && git log -n1 )
+add_gh_flat pvData ${REPOPVD:-epics-base} pvDataCPP ${BRPVD:-master}
-  add_gh_flat pvData ${REPOPVD:-epics-base} pvDataCPP ${BRPVD:-master}
+add_gh_flat pvAccess ${REPOPVA:-epics-base} pvAccessCPP ${BRPVA:-master}
-  add_gh_flat pvAccess ${REPOPVA:-epics-base} pvAccessCPP ${BRPVA:-master}
+add_gh_flat normativeTypes ${REPONT:-epics-base} normativeTypesCPP ${BRNT:-master}
-  add_gh_flat normativeTypes ${REPONT:-epics-base} normativeTypesCPP ${BRNT:-master}
-else
-  git clone --quiet --depth 5 --branch core/"${BRCORE:-master}" https://github.com/${REPOBASE:-epics-base}/epics-base.git epics-base
-  ( cd epics-base && git log -n1 )
-  add_base_module libcom "${BRLIBCOM:-master}"
-  add_base_module ca "${BRCA:-master}"
-  add_base_module database "${BRDATABASE:-master}"
-  add_gh_module pvData ${REPOPVD:-epics-base} pvDataCPP ${BRPVD:-master}
-  add_gh_module pvAccess ${REPOPVA:-epics-base} pvAccessCPP ${BRPVA:-master}
-  add_gh_module normativeTypes ${REPONT:-epics-base} normativeTypesCPP ${BRNT:-master}
-fi
 
 if [ -e $CURDIR/configure/RELEASE.local ]
 then
@@ -150,31 +92,20 @@ EOF
 if [ -n "$RTEMS" ]
 then
   echo "Cross RTEMS${RTEMS} for pc386"
-  install -d /home/travis/.cache
+  curl -L "https://github.com/mdavidsaver/rsb/releases/download/20171203-${RTEMS}/i386-rtems${RTEMS}-trusty-20171203-${RTEMS}.tar.bz2" \
-  curl -L "https://github.com/mdavidsaver/rsb/releases/download/travis-20160306-2/rtems${RTEMS}-i386-trusty-20190306-2.tar.gz" \
+  | tar -C / -xmj
-  | tar -C /home/travis/.cache -xj
 
   sed -i -e '/^RTEMS_VERSION/d' -e '/^RTEMS_BASE/d' epics-base/configure/os/CONFIG_SITE.Common.RTEMS
   cat << EOF >> epics-base/configure/os/CONFIG_SITE.Common.RTEMS
 RTEMS_VERSION=$RTEMS
-RTEMS_BASE=/home/travis/.cache/rtems${RTEMS}-i386
+RTEMS_BASE=$HOME/.rtems
 EOF
   cat << EOF >> epics-base/configure/CONFIG_SITE
-CROSS_COMPILER_TARGET_ARCHS+=RTEMS-pc386
+CROSS_COMPILER_TARGET_ARCHS += RTEMS-pc386-qemu
 EOF
-
-  # find local qemu-system-i386
-  export PATH="$HOME/.cache/qemu/usr/bin:$PATH"
-  echo -n "Using QEMU: "
-  type qemu-system-i386 || echo "Missing qemu"
-  EXTRA=RTEMS_QEMU_FIXUPS=YES
 fi
 
 make -j2 -C epics-base $EXTRA
-
-if [ "$BRBASE" ]
-then
 make -j2 -C pvData $EXTRA
-make -j2 -C pvAccess $EXTRA
 make -j2 -C normativeTypes $EXTRA
-fi
+make -j2 -C pvAccess $EXTRA

.travis.yml

@@ -11,19 +11,21 @@ addons:
     - perl
     - clang
     - g++-mingw-w64-i686
+    - qemu-system-x86
 install:
  - ./.ci/travis-prepare.sh
 script:
  - ./.ci/travis-build.sh
 env:
- - BRCORE=master BRLIBCOM=master BRPVD=master BRPVA=master BRNT=master TEST=NO
+ - BRBASE=7.0
- - CMPLR=clang TEST=NO
+ - BRBASE=7.0 CMPLR=clang
- - USR_CXXFLAGS=-std=c++11 TEST=NO
+ - BRBASE=7.0 EXTRA="CMD_CXXFLAGS=-std=c++98"
- - CMPLR=clang USR_CXXFLAGS=-std=c++11 TEST=NO
+ - BRBASE=7.0 EXTRA="CMD_CXXFLAGS=-std=c++11"
- - WINE=32 TEST=NO STATIC=YES
+ - BRBASE=7.0 CMPLR=clang EXTRA="CMD_CXXFLAGS=-std=c++11"
- - WINE=32 TEST=NO STATIC=NO
+ - BRBASE=7.0 WINE=32 TEST=NO STATIC=YES
- - RTEMS=4.10 TEST=NO
+ - BRBASE=7.0 WINE=32 TEST=NO STATIC=NO
- - RTEMS=4.9 TEST=NO
+ - BRBASE=7.0 RTEMS=4.10 TEST=NO
- - BRBASE=3.16 TEST=NO
+ - BRBASE=7.0 RTEMS=4.9 TEST=NO
- - BRBASE=3.15 TEST=NO
+ - BRBASE=3.16
- - BRBASE=3.14 TEST=NO
+ - BRBASE=3.15
+ - BRBASE=3.14

README.md

@@ -1,23 +1,17 @@
-pvaClientCPP
+# pvaClientCPP
-============
 
-pvaClient is a synchronous client interface to pvAccess,
+The **pvaClient** API provides a synchronous client interface that was designed to be easier to use than the original basic pvAccess client API.
-which is callback based.
-pvaClient is thus easier to use than pvAccess itself.
 
-See documentation/pvaClientCPP.html for details.
+The pvaClientCPP module implements the pvaClient API for C++ client applications.
 
-Building
+## Links
---------
 
-If a proper RELEASE.local file exists one directory level above pvaClientCPP
+- General information about EPICS can be found at the
-then just type:
+  [EPICS Controls website](https://epics-controls.org).
+- API documentation for this module can be found in its
+  documentation directory, in particular the file
+  pvaClientCPP.html
 
-    make
+## Building
-
-It can also be built by:
-
-    cp configure/ExampleRELEASE.local configure/RELEASE.local
-    edit configure/RELEASE.local
-    make
 
+This module is included as a submodule of a full EPICS 7 release and will be compiled during builds of that software.

documentation/RELEASE_NOTES.md

@@ -1,18 +1,55 @@
-pvaClientCPP Version 4.3.0
+# pvaClientCPP Module
-==========================
 
-Works with pvDataCPP-7.0 and pvAccessCPP-6.0 versions
+This document summarizes the changes to the module between releases.
------------------------------------------------------
 
-Will not work with older versions of these modules.
+## Release 4.5.0 (EPICS 7.0.2.2, Apr 2019)
 
-destroy methods removed
+Changes have been made for getDouble, putDouble, getDoubleArray, putDoubleArray, getString, putString, getStringArray, and putStringArray.
------------------------
 
-All the destroy methods are removed since implementation is RAII compliant.
+1) Previously each only had support for a top level field named value.
+Each now allows access to a single sub field that has the correct type.
+Thus pvRequest must select a single field. For example
 
-API changes to PvaClientMonitor
+    pva->channel("PVRdumbPowerSupply")->putDouble(1.0,"power.value" );
--------------------------------
+
+2) PvaChannel now has a method for each of the above.
+For example instead of
+
+    PvaClientChannelPtr channel = pva->channel("PVRdouble");
+    PvaClientPutPtr clientPut = channel->put();
+    PvaClientPutDataPtr putData = clientPut->getData();
+    putData->putDouble(1.0); clientPut->put();
+
+now it can be
+
+    pva->channel("PVRdouble")->putDouble(1.0 );
+
+3) getDoubleArray and putDoubleArray work with any numeric scalar array
+
+4) getStringArray and putStringArray work with any scalar array.
+
+## Release 4.4 (EPICS 7.0.2, Dec 2018)
+
+### API changes to PvaClientMonitor
+
+The create method that had arguments for stateChangeRequester and monitorRequester no longer exists.
+
+### API changes to PvaClientGet, ..., PvaClientMonitor
+
+Previously the pvaClientGet, ..., pvaClientMonitor classes all implemented PvaClientChannelStateChangeRequester(). This method was never called and has been removed.
+
+
+## Release 4.3 (EPICS 7.0.1, Dec 2017)
+
+### Requires pvDataCPP-7.0 and pvAccessCPP-6.0 versions
+
+This release will not work with older versions of these modules.
+
+### Destroy methods removed
+
+All the destroy() methods have been removed, implementation is RAII compliant.
+
+### API changes to PvaClientMonitor
 
 The second argument of method
 
@@ -22,7 +59,7 @@ The second argument of method
         epics::pvData::PVStructurePtr const &pvRequest
     );
 
-Is now changed to
+is now changed to
 
     static PvaClientMonitorPtr create(
         PvaClientPtr const &pvaClient,
@@ -42,22 +79,16 @@ A new method is also implemented
     );
 
 
-pvaClientCPP Version 4.2
+## Release 4.2 (EPICS V4.6, Aug 2016)
-========================
 
 * The examples are moved to exampleCPP.
 * Support for channelRPC is now available.
 * In PvaClientMultiChannel checkConnected() now throws an exception if connect fails.
 
 
-
+## Release 4.1 (EPICS V4.5, Oct 2015)
-pvaClientCPP Version 4.1
-========================
-
 
 pvaClient is a synchronous API for pvAccess.
 
-
 This is the first release of pvaClientCPP.
 It provides an API that is similar to pvaClientJava.
-

documentation/pvaClientCPP.html

@@ -26,13 +26,13 @@
 
 <div class="head">
 <h1>EPICS pvaClientCPP</h1>
-<h2 class="nocount">Release 4.3.0 - 2017-12-14</h2>
+<h2 class="nocount">Release 4.4 - April 2019</h2>
 
 <h2 class="nocount">Abstract</h2>
 
 <p>pvaClient is a software library that provides, to an EPICS client programmer, a friendly
-client side programming interface to the data of an EPICS based control system. It is intended 
+client side programming interface to the data of an EPICS based control system. It is intended
-for such uses as rapid development of ad hoc programs by controls engineers, or to provide 
+for such uses as rapid development of ad hoc programs by controls engineers, or to provide
 scientists a way to directly develop analytical applications.</p>
 
 <p>Specifically, pvaClient provides a synchronous interface for pvAccess, which is the
@@ -41,7 +41,7 @@ pvAccess provides a callback based interface, which can be hard to use.
 pvaClient provides an interface that does not require callbacks even for monitors.
 </p>
 <p>
-pvaClientChannel provides many "convenience" methods to directly get and put 
+pvaClientChannel provides many "convenience" methods to directly get and put
 scalar and scalarArray data types.
 Additional methods provide access to the full features of pvAccess.
 </p>
@@ -62,11 +62,11 @@ The data for the channels is presented via normative type NTMultiChannel.
 
 </div> <!-- head -->
 
-<div id="contents" class="contents">	  
+<div id="contents" class="contents">
 <hr />
 <h2>Overview</h2>
 <p>
-pvaClientCPP is one of the components of 
+pvaClientCPP is one of the components of
 <a href="http://epics-pvdata.sourceforge.net">
 EPICS Version 4
 </a>
@@ -79,7 +79,7 @@ It is intended for developers that want to use pvaClientCPP.
 <h2>Developer Guide</h2>
 <p>A guide for developers is available at
 <a
-href="http://epics-pvdata.sourceforge.net/informative/developerGuide/developerGuide.html">
+href="https://mrkraimer.github.io/website/developerGuide/developerGuide.html">
 developerGuide
 </a>
 </p>

jenkins/cloudbees_doc

@@ -21,14 +21,7 @@ installE4 () {
     local module=$1
     local branch=$2
 
-    # If microbench version does not exist, try without
+    wget -nv https://openepics.ci.cloudbees.com/job/e4-cpp-${module}-${branch}-build/BASE=${BASE}/lastSuccessfulBuild/artifact/${module}.CB-dist.tar.gz
-    if [ "${MB}" = "WITH_MICROBENCH" ]; then
-        if ! wget -nv https://openepics.ci.cloudbees.com/job/e4-cpp-${module}-${branch}-build/BASE=${BASE},MB=WITH_MICROBENCH/lastSuccessfulBuild/artifact/${module}.CB-dist.tar.gz; then
-            wget -nv https://openepics.ci.cloudbees.com/job/e4-cpp-${module}-${branch}-build/BASE=${BASE},MB=NO_MICROBENCH/lastSuccessfulBuild/artifact/${module}.CB-dist.tar.gz
-        fi
-    else
-        wget -nv https://openepics.ci.cloudbees.com/job/e4-cpp-${module}-${branch}-build/BASE=${BASE},MB=NO_MICROBENCH/lastSuccessfulBuild/artifact/${module}.CB-dist.tar.gz
-    fi
     tar -xzf ${module}.CB-dist.tar.gz
 }
 

src/Makefile

@@ -6,12 +6,13 @@ include $(TOP)/configure/CONFIG
 LIBRARY += pvaClient
 
 # shared library ABI version.
-SHRLIB_VERSION ?= 4.3.0
+SHRLIB_VERSION ?= 4.5.0
 
 INC += pv/pvaClient.h
 INC += pv/pvaClientMultiChannel.h
 
 LIBSRCS += pvaClient.cpp
+LIBSRCS += pvaClientData.cpp
 LIBSRCS += pvaClientPutData.cpp
 LIBSRCS += pvaClientGetData.cpp
 LIBSRCS += pvaClientMonitorData.cpp

src/pv/pvaClient.h

@@ -23,7 +23,6 @@
 #include <pv/event.h>
 #include <pv/lock.h>
 #include <pv/pvData.h>
-#include <pv/pvCopy.h>
 #include <pv/pvTimeStamp.h>
 #include <pv/timeStamp.h>
 #include <pv/pvAlarm.h>
@@ -45,6 +44,8 @@ namespace epics { namespace pvaClient {
 
 class PvaClient;
 typedef std::tr1::shared_ptr<PvaClient> PvaClientPtr;
+class PvaClientData;
+typedef std::tr1::shared_ptr<PvaClientData> PvaClientDataPtr;
 class PvaClientGetData;
 typedef std::tr1::shared_ptr<PvaClientGetData> PvaClientGetDataPtr;
 class PvaClientPutData;
@@ -120,6 +121,12 @@ public:
     /** @brief Get the requester name.
      * @return The name.
      */
+     /** @brief Create an instance of PvaClient with providerName "pva ca".
+     * @return shared pointer to the single instance
+     * @deprecated This method will go away in future versions. Use get instead.
+     */
+    static PvaClientPtr create() EPICS_DEPRECATED;
+
     std::string getRequesterName();
     /** @brief A new message.
      *
@@ -306,11 +313,42 @@ public:
     PvaClientGetPtr createGet(std::string const & request = "field(value,alarm,timeStamp)");
     /** @brief Creates an PvaClientGet.
      *
-     * @param pvRequest The syntax of pvRequest is defined by the copy facility of pvData.
+     * @param pvRequest The syntax of request is defined by the copy facility of pvData.
+     * @return The interface.
      * @return The interface.
      * @throw runtime_error if failure.
      */
     PvaClientGetPtr createGet(epics::pvData::PVStructurePtr const &  pvRequest);
+    /** @brief Get the value as a double.
+     *
+     * @param request The syntax of request is defined by the copy facility of pvData.
+     * @return The value.
+     * @throw runtime_error if failure.
+     */
+    double getDouble(std::string const & request = "field(value)");
+    /** Get the value as a string.
+     *
+     * @param request The syntax of request is defined by the copy facility of pvData.
+     * @return The value.
+     * @throw runtime_error if failure.
+     */
+    std::string getString(std::string const & request = "field(value)");
+    /** @brief Get the value as a double array.
+     *
+     * @param request The syntax of request is defined by the copy facility of pvData.
+     * @return The value.
+     * @throw runtime_error if failure.
+     */
+    epics::pvData::shared_vector<const double>  getDoubleArray(
+        std::string const & request = "field(value)");
+    /** @brief Get the value as a string array.
+     *
+     * @param request The syntax of request is defined by the copy facility of pvData.
+     * @return The value.
+     * @throw runtime_error if failure.
+     */
+    epics::pvData::shared_vector<const std::string>  getStringArray(
+        std::string const & request = "field(value)");
     /** @brief create a PvaClientPut.
      * 
      * Get a cached PvaClientPut or create and connect to a new PvaClientPut.
@@ -334,6 +372,44 @@ public:
      * @return The interface.
      */
     PvaClientPutPtr createPut(epics::pvData::PVStructurePtr const & pvRequest);
+    /** @brief Put the value as a double.
+     *
+     * @param value The new value.
+     * @param request The syntax of request is defined by the copy facility of pvData.
+     * @throw runtime_error if failure.
+     */
+    void putDouble(double value,std::string const & request = "field(value)");
+    /** @brief Put the value as a string.
+     *
+     * @param value The new value.
+     * @param request The syntax of request is defined by the copy facility of pvData.
+     * @throw runtime_error if failure.
+     */
+    void putString(std::string const & value,std::string const & request = "field(value)");
+    /** @brief Copy the array to the value field.
+     *
+     * @param value The new value.
+     * @param request The syntax of request is defined by the copy facility of pvData.
+     * @throw runtime_error if failure.
+     */
+    void putDoubleArray(
+        epics::pvData::shared_vector<const double> const & value,
+        std::string const & request = "field(value)");
+    /** @brief Copy array to the value field.
+     * 
+     * @param value The new value.
+     * @param request The syntax of request is defined by the copy facility of pvData.
+     * @throw runtime_error if failure.
+     */
+    void putStringArray(
+        epics::pvData::shared_vector<const std::string> const & value,
+        std::string const & request = "field(value)");
+    /** @brief Copy array to the value field.
+     * @param value The data used to update the channel value.
+     * @param request The request as a string to pass to createRequest.
+     * @throw runtime_error if failure.
+     */
+    void putStringArray(std::vector<std::string> const & value,std::string const & request = "field(value)");
     /** @brief create a PvaClientPutGet.
      *
      * First call createRequest as implemented by pvDataJava and then calls the next method.
@@ -485,18 +561,18 @@ public:
 };
 
 /** 
- *  @brief A class that holds data returned by PvaClientGet or PvaClientPutGet
+ *  @brief A base class for PvaClientGetData, PvaClientPutData, and PvaClientMonitorData.
  *
- * <a href = "../htmldoxygen/pvaClientGetData.html">Overview of PvaClientGetData</a>
+ * <a href = "../htmldoxygen/pvaClientData.html">Overview of PvaClientData</a>
  */
-class epicsShareClass PvaClientGetData
+class epicsShareClass PvaClientData
 {
 public:
-    POINTER_DEFINITIONS(PvaClientGetData);
+    POINTER_DEFINITIONS(PvaClientData);
     /**
      * @brief Destructor
      */
-    ~PvaClientGetData() {}
+    ~PvaClientData() {}
     /** @brief Set a prefix for throw messages.
      *
      * This is called by other pvaClient classes.
@@ -603,6 +679,44 @@ public:
      * @return The timeStamp.
      */
     epics::pvData::TimeStamp getTimeStamp();
+    /** @brief Factory method for creating an instance of PvaClientData.
+     *
+     * NOTE: Not normally called by clients
+     * @param structure Introspection interface
+     * @throw runtime_error if failure.
+     */
+    static PvaClientDataPtr create(epics::pvData::StructureConstPtr const & structure);
+protected:
+    PvaClientData(epics::pvData::StructureConstPtr const & structure);
+    void checkValue();
+    std::string messagePrefix;
+private:
+
+    epics::pvData::StructureConstPtr structure;
+    epics::pvData::PVStructurePtr pvStructure;
+    epics::pvData::BitSetPtr bitSet;
+
+    
+    epics::pvData::PVFieldPtr pvValue;
+    epics::pvData::PVAlarm pvAlarm;
+    epics::pvData::PVTimeStamp pvTimeStamp;
+    friend class PvaClientGet;
+    friend class PvaClientPutGet;
+};
+
+/** 
+ *  @brief A class that holds data returned by PvaClientGet or PvaClientPutGet
+ *
+ * <a href = "../htmldoxygen/pvaClientGetData.html">Overview of PvaClientGetData</a>
+ */
+class epicsShareClass PvaClientGetData : public PvaClientData
+{
+public:
+    POINTER_DEFINITIONS(PvaClientGetData);
+    /**
+     * @brief Destructor
+     */
+    ~PvaClientGetData() {}
     /** @brief Factory method for creating an instance of PvaClientGetData.
      *
      * NOTE: Not normally called by clients
@@ -612,15 +726,6 @@ public:
     static PvaClientGetDataPtr create(epics::pvData::StructureConstPtr const & structure);
 private:
     PvaClientGetData(epics::pvData::StructureConstPtr const & structure);
-    void checkValue();
-    epics::pvData::StructureConstPtr structure;
-    epics::pvData::PVStructurePtr pvStructure;
-    epics::pvData::BitSetPtr bitSet;
-
-    std::string messagePrefix;
-    epics::pvData::PVFieldPtr pvValue;
-    epics::pvData::PVAlarm pvAlarm;
-    epics::pvData::PVTimeStamp pvTimeStamp;
     friend class PvaClientGet;
     friend class PvaClientPutGet;
 };
@@ -631,7 +736,7 @@ class PvaClientPostHandlerPvt; // private to PvaClientPutData
  *
  * <a href = "../htmldoxygen/pvaClientPutData.html">Overview of PvaClientPutData</a>
  */
-class epicsShareClass PvaClientPutData 
+class epicsShareClass PvaClientPutData : public PvaClientData
 {
 public:
     POINTER_DEFINITIONS(PvaClientPutData);
@@ -639,93 +744,6 @@ public:
      * @brief Destructor
      */    
     ~PvaClientPutData() {}
-    /** @brief Set a prefix for throw messages.
-     *
-     * @param value The prefix.
-     */
-    void setMessagePrefix(std::string const & value);
-    /** @brief Get the structure.
-     *
-     * @return The Structure
-     * @throw runtime_error if failure.
-     */
-    epics::pvData::StructureConstPtr getStructure();
-   /** @brief Get the pvStructure.
-    *
-    * @return the pvStructure.
-    * @throw runtime_error if failure.
-    */
-   epics::pvData::PVStructurePtr getPVStructure();
-    /**  @brief Get the changed BitSet for the pvStructure
-     *
-     * This shows which fields have changed values.
-     * @return The bitSet
-     * @throw runtime_error if failure.
-     */
-    epics::pvData::BitSetPtr getChangedBitSet();
-    /**  @brief Show the fields that have changed values.
-     *
-     * @param out The stream that shows the changed fields.
-     * @return The stream that was passed as out.
-     */
-    std::ostream & showChanged(std::ostream & out);
-    /**
-     * @brief Is there a top level field named value.
-     *
-     * @return The answer.
-     */
-    bool hasValue();
-    /** @brief Is the value field a scalar?
-     *
-     * @return The answer.
-     */
-    bool isValueScalar();
-    /** @brief Is the value field a scalar array?
-     * @return The answer.
-     */
-    bool isValueScalarArray();
-    /** Get the interface to the value field.
-     *
-     * @return The interface. an excetion is thrown if a value field does not exist.
-     */
-    epics::pvData::PVFieldPtr getValue();
-    /** @brief Get the interface to a scalar value field.
-     *
-     * @return The interface for a scalar value field.
-     * @throw runtime_error if failure.
-     */
-    epics::pvData::PVScalarPtr getScalarValue();
-    /** @brief Get the interface to an array value field.
-     * @return The interface.
-     * An exception is thown if no array value field.
-     */
-    std::tr1::shared_ptr<epics::pvData::PVArray> getArrayValue();
-    /** @brief Get the interface to a scalar array value field.
-     * @return Return the interface.
-     * @throw runtime_error if failure.
-     */
-    std::tr1::shared_ptr<epics::pvData::PVScalarArray> getScalarArrayValue();
-    /** @brief Get the value as a double.
-     *
-     * If value is not a numeric scalar an exception is thrown.
-     * @return The value.
-     */
-    double getDouble();
-    /** @brief Get the value as a string.
-     * @return The value.
-     * @throw runtime_error if failure.
-     */
-    std::string getString();
-    /** @brief Get the value as a double array.
-     * If the value is not a numeric array an exception is thrown.
-     * @return The value.
-     */
-    epics::pvData::shared_vector<const double>  getDoubleArray();
-    /** @brief Get the value as a string array.
-     * @return The value.
-     * @throw runtime_error if failure.
-     */
-    epics::pvData::shared_vector<const std::string>  getStringArray();
     /** @brief Put the value as a double.
      * @param value The new value.
      * An exception is also thrown if the actualy type can cause an overflow.
@@ -759,17 +777,9 @@ public:
      static PvaClientPutDataPtr create(epics::pvData::StructureConstPtr const & structure);
 private:
     PvaClientPutData(epics::pvData::StructureConstPtr const &structure);
-    void checkValue();
     void postPut(size_t fieldNumber);
-
     std::vector<epics::pvData::PostHandlerPtr> postHandler;
-    epics::pvData::StructureConstPtr structure;
-    epics::pvData::PVStructurePtr pvStructure;
-    epics::pvData::BitSetPtr bitSet;
     friend class PvaClientPostHandlerPvt;
-
-    std::string messagePrefix;
-    epics::pvData::PVFieldPtr pvValue;
     friend class PvaClientPut;
     friend class PvaClientPutGet;
 };
@@ -779,7 +789,7 @@ private:
  *
  * <a href = "../htmldoxygen/pvaClientMonitorData.html">Overview of PvaClientMonitorData</a>
  */
-class epicsShareClass PvaClientMonitorData
+class epicsShareClass PvaClientMonitorData : public PvaClientData
 {
 public:
     POINTER_DEFINITIONS(PvaClientMonitorData);
@@ -787,27 +797,6 @@ public:
      * @brief Destructor
      */    
     ~PvaClientMonitorData() {}
-    /** @brief Set a prefix for throw messages.
-     * @param value The prefix.
-     */
-    void setMessagePrefix(std::string const & value);
-    /** @brief Get the structure.
-     * @return The Structure
-     * @throw runtime_error if failure.
-     */
-    epics::pvData::StructureConstPtr getStructure();
-    /** @brief Get the pvStructure.
-     * @return the pvStructure.
-     * @throw runtime_error if failure.
-     */
-    epics::pvData::PVStructurePtr getPVStructure();
-    /**  @brief Get the changed BitSet for the pvStructure,
-     *
-     * This shows which fields have changed value.
-     * @return The bitSet
-     * @throw runtime_error if failure.
-     */
-    epics::pvData::BitSetPtr getChangedBitSet();
     /** @brief Get the overrun BitSet for the pvStructure
      * This shows which fields have had more than one change.
      * @return The bitSet
@@ -818,111 +807,21 @@ public:
      * @param out The stream that shows the changed fields.
      * @return The stream that was passed as out.
      */
-    std::ostream & showChanged(std::ostream & out);
-    /** @brief Show the fields that have overrun.
-     * @param out The stream that shows the overrun fields.
-     * @return The stream that was  passed as out
-     */
     std::ostream & showOverrun(std::ostream & out);
-    /** @brief Is there a top level field named value.
-     * @return The answer.
-     */
-    bool hasValue();
-    /** @brief Is the value field a scalar?
-     * @return The answer.
-     */
-    bool isValueScalar();
-    /** @brief Is the value field a scalar array?
-     * @return The answer.
-     */
-    bool isValueScalarArray();
-    /** @brief Get the interface to the value field.
-     * @return The interface. an excetion is thrown if a value field does not exist.
-     */
-    epics::pvData::PVFieldPtr getValue();
-    /** @brief Get the interface to a scalar value field.
-     * @return The interface for a scalar value field.
-     * @throw runtime_error if failure.
-     * An exception is thown if no scalar value field.
-     */
-    epics::pvData::PVScalarPtr getScalarValue();
-    /** @brief Get the interface to an array value field.
-     * @return The interface.
-     * @throw runtime_error if failure.
-     * An exception is thown if no array value field.
-     */
-    std::tr1::shared_ptr<epics::pvData::PVArray> getArrayValue();
-    /** @brief Get the interface to a scalar array value field.
-     * @return Return the interface.
-     * @throw runtime_error if failure.
-     * An exception is thown if no scalar array value field.
-     */
-    std::tr1::shared_ptr<epics::pvData::PVScalarArray> getScalarArrayValue();
-    /** @brief Get the value as a double.
-     *
-     * If value is not a numeric scalar an exception is thrown.
-     * @return The value.
-     */
-    double getDouble();
-    /** @brief Get the value as a string.
-     *
-     * If value is not a scalar an exception is thrown
-     * @return The value.
-     * @throw runtime_error if failure.
-     */
-    std::string getString();
-    /** @brief Get the value as a double array.
-     *
-     * If the value is not a numeric array an exception is thrown.
-     * @return The value.
-     * @throw runtime_error if failure.
-     */
-    epics::pvData::shared_vector<const double>  getDoubleArray();
-    /** @brief Get the value as a string array.
-     *
-     * If the value is not a string array an exception is thrown.
-     * @return The value.
-     * @throw runtime_error if failure.
-     */
-    epics::pvData::shared_vector<const std::string>  getStringArray();
-    /** @brief Get the alarm.
-     *
-     * If the pvStructure as an alarm field it's values are returned.
-     * If no then alarm shows that not alarm defined.
-     * @return The alarm.
-     * @throw runtime_error if failure.
-     */
-    epics::pvData::Alarm getAlarm();
-    /** @brief Get the timeStamp.
-     *
-     * If the pvStructure has a timeStamp field, it's values are returned.
-     * If no then all fields are 0.
-     * @return The timeStamp.
-     */
-    epics::pvData::TimeStamp getTimeStamp();
-    /** Factory method for creating an instance of PvaClientGetData.
-     * NOTE: Not normally called by clients
-     * @param structure Introspection interface
-     */
-     static PvaClientMonitorDataPtr create(epics::pvData::StructureConstPtr const & structure);
      /** Put data into PVStructure from monitorElement
       *  NOTE: Not normally called by clients
       * @param monitorElement the monitorElement that has new data.
       */
      void setData(epics::pvData::MonitorElementPtr const & monitorElement);
+    /** Factory method for creating an instance of PvaClientGetData.
+     * NOTE: Not normally called by clients
+     * @param structure Introspection interface
+     */
+     static PvaClientMonitorDataPtr create(epics::pvData::StructureConstPtr const & structure);
 private:
     PvaClientMonitorData(epics::pvData::StructureConstPtr const & structure);
-    void checkValue();
-    
-    epics::pvData::StructureConstPtr structure;
-    epics::pvData::PVStructurePtr pvStructure;
-    epics::pvData::BitSetPtr changedBitSet;
     epics::pvData::BitSetPtr overrunBitSet;
 
-    std::string messagePrefix;
-    epics::pvData::PVFieldPtr pvValue;
-    epics::pvData::PVAlarm pvAlarm;
-    epics::pvData::PVTimeStamp pvTimeStamp;
     friend class PvaClientMonitor;
 };
 
@@ -967,14 +866,13 @@ typedef std::tr1::shared_ptr<ChannelProcessRequesterImpl> ChannelProcessRequeste
  * <a href = "../htmldoxygen/pvaClientProcess.html">Overview of PvaClientProcess</a>
  */
 class epicsShareClass PvaClientProcess :
-    public PvaClientChannelStateChangeRequester,
     public std::tr1::enable_shared_from_this<PvaClientProcess>
 {
 public:
     POINTER_DEFINITIONS(PvaClientProcess);
     /** @brief  Create a PvaClientProcess.
-     * @param &pvaClient Interface to PvaClient
+     * @param pvaClient Interface to PvaClient
-     * @param channel Interface to Channel
+     * @param pvaClientChannel Interface to Channel
      * @param pvRequest The request structure.
      * @return The interface to the PvaClientProcess.
      */
@@ -1054,13 +952,11 @@ private:
 
     ProcessConnectState connectState;
 
-    PvaClientChannelStateChangeRequesterWPtr pvaClientChannelStateChangeRequester;
     PvaClientProcessRequesterWPtr pvaClientProcessRequester;
     enum ProcessState {processIdle,processActive,processComplete};
     ProcessState processState;
     ChannelProcessRequesterImplPtr channelProcessRequester;
 public:
-    void channelStateChange(PvaClientChannelPtr const & pvaClientChannel, bool isConnected);
     friend class ChannelProcessRequesterImpl;
 };
 
@@ -1104,7 +1000,6 @@ public:
  * <a href = "../htmldoxygen/pvaClientGet.html">Overview of PvaClientGet</a>
  */
 class epicsShareClass PvaClientGet :
-    public PvaClientChannelStateChangeRequester,
     public std::tr1::enable_shared_from_this<PvaClientGet>
 {
 public:
@@ -1183,7 +1078,7 @@ private:
         PvaClientChannelPtr const & pvaClientChannel,
         epics::pvData::PVStructurePtr const &pvRequest);
 
-    void checkGetState();
+    void checkConnectState();
     enum GetConnectState {connectIdle,connectActive,connected};
 
     PvaClient::weak_pointer pvaClient;
@@ -1200,14 +1095,12 @@ private:
 
     GetConnectState connectState;
 
-    PvaClientChannelStateChangeRequesterWPtr pvaClientChannelStateChangeRequester;
     PvaClientGetRequesterWPtr pvaClientGetRequester;
 
     enum GetState {getIdle,getActive,getComplete};
     GetState getState;
     ChannelGetRequesterImplPtr channelGetRequester;
 public:
-    void channelStateChange(PvaClientChannelPtr const & pvaClientChannel, bool isConnected);
     friend class ChannelGetRequesterImpl;
 };
 
@@ -1263,14 +1156,13 @@ public:
  * <a href = "../htmldoxygen/pvaClientPut.html">Overview of PvaClientPut</a>
  */
 class epicsShareClass PvaClientPut :
-    public PvaClientChannelStateChangeRequester,
     public std::tr1::enable_shared_from_this<PvaClientPut>
 {
 public:
     POINTER_DEFINITIONS(PvaClientPut);
     /** @brief Create a PvaClientPut.
-     * @param &pvaClient Interface to PvaClient
+     * @param pvaClient Interface to PvaClient
-     * @param channel Interface to Channel
+     * @param pvaClientChannel Interface to Channel
      * @param pvRequest The request structure.
      * @return The interface to the PvaClientPut.
      */
@@ -1355,7 +1247,7 @@ private :
         PvaClientChannelPtr const & pvaClientChannel,
         epics::pvData::PVStructurePtr const &pvRequest);
     
-    void checkPutState();
+    void checkConnectState();
     enum PutConnectState {connectIdle,connectActive,connected};
 
     PvaClient::weak_pointer pvaClient;
@@ -1374,10 +1266,8 @@ private :
     enum PutState {putIdle,getActive,putActive,putComplete};
     PutState putState;
     ChannelPutRequesterImplPtr channelPutRequester;
-    PvaClientChannelStateChangeRequesterWPtr pvaClientChannelStateChangeRequester;
     PvaClientPutRequesterWPtr pvaClientPutRequester;
 public:
-    void channelStateChange(PvaClientChannelPtr const & pvaClientChannel, bool isConnected);
     friend class ChannelPutRequesterImpl;
 };
 
@@ -1444,14 +1334,13 @@ public:
  * <a href = "../htmldoxygen/pvaClientPutGet.html">Overview of PvaClientPutGet</a>
  */
 class epicsShareClass PvaClientPutGet :
-    public PvaClientChannelStateChangeRequester,
     public std::tr1::enable_shared_from_this<PvaClientPutGet>
 {
 public:
     POINTER_DEFINITIONS(PvaClientPutGet);
     /** @brief Create a PvaClientPutGet.
-     * @param &pvaClient Interface to PvaClient
+     * @param pvaClient Interface to PvaClient
-     * @param channel Interface to Channel
+     * @param pvaClientChannel Interface to Channel
      * @param pvRequest The request structure.
      * @return The interface to the PvaClientPutGet.
      */
@@ -1584,10 +1473,8 @@ private :
     enum PutGetState {putGetIdle,putGetActive,putGetComplete};
     PutGetState putGetState;
     ChannelPutGetRequesterImplPtr channelPutGetRequester;
-    PvaClientChannelStateChangeRequesterWPtr pvaClientChannelStateChangeRequester;
     PvaClientPutGetRequesterWPtr pvaClientPutGetRequester;
 public:
-    void channelStateChange(PvaClientChannelPtr const & pvaClientChannel, bool isConnected);
     friend class ChannelPutGetRequesterImpl;
 };
 
@@ -1639,7 +1526,7 @@ typedef std::tr1::shared_ptr<MonitorRequesterImpl> MonitorRequesterImplPtr;
  *  <a href = "../htmldoxygen/pvaClientMonitor.html">Overview of PvaClientMonitor</a>
  */
 class epicsShareClass PvaClientMonitor :
-    public PvaClientChannelStateChangeRequester,
+    public PvaClientChannelStateChangeRequester,   // remove when deprecated create removed
     public PvaClientMonitorRequester,
     public std::tr1::enable_shared_from_this<PvaClientMonitor>
 {
@@ -1664,6 +1551,7 @@ public:
      * @param stateChangeRequester The state change requester. Can be null.
      * @param monitorRequester The monitor requester. Can be null;
      * @return The new instance.
+     * @deprecated client can create PvaClientMonitor on first channel connect.
      */
     static PvaClientMonitorPtr create(
         PvaClientPtr const &pvaClient,
@@ -1674,7 +1562,7 @@ public:
             = PvaClientChannelStateChangeRequesterPtr(),
         PvaClientMonitorRequesterPtr const & monitorRequester 
             = PvaClientMonitorRequesterPtr()
-    );
+    ) EPICS_DEPRECATED;
     /** @brief Destructor
      */
     ~PvaClientMonitor();
@@ -1767,15 +1655,14 @@ private:
     epics::pvData::MonitorPtr monitor;
     epics::pvData::MonitorElementPtr monitorElement;
     
-    PvaClientChannelStateChangeRequesterWPtr pvaClientChannelStateChangeRequester;
     PvaClientMonitorRequesterWPtr pvaClientMonitorRequester;
     MonitorConnectState connectState;
     bool userPoll;
     bool userWait;
     MonitorRequesterImplPtr monitorRequester;
-
+    PvaClientChannelStateChangeRequesterWPtr pvaClientChannelStateChangeRequester; //deprecate
 public:
-    void channelStateChange(PvaClientChannelPtr const & channel, bool isConnected);
+    void channelStateChange(PvaClientChannelPtr const & channel, bool isConnected); //deprecate
     void event(PvaClientMonitorPtr const & monitor);
     friend class MonitorRequesterImpl;
 };

src/pvaClient.cpp

@@ -18,7 +18,6 @@
 
 #include <pv/pvaClient.h>
 
-using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace epics::pvAccess::ca;
@@ -111,6 +110,7 @@ PvaClientPtr PvaClient::get(std::string const & providerNames)
     return master;
 }
 
+PvaClientPtr PvaClient::create() {return get();}
 
 PvaClient::PvaClient(std::string const & providerNames)
 :  pvaClientChannelCache(new PvaClientChannelCache()),
@@ -231,4 +231,4 @@ size_t PvaClient::cacheSize()
 }
 
 }}
-
+ 

src/pvaClientChannel.cpp

@@ -18,7 +18,6 @@
 
 #include <pv/pvaClient.h>
 
-using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace std;
@@ -170,6 +169,7 @@ void PvaClientChannel::channelCreated(const Status& status, Channel::shared_poin
            << endl;
     }
     Lock xx(mutex);
+    this->channel = channel;
     if(connectState==connected) return;
     if(connectState!=connectActive) {
          string message("PvaClientChannel::channelCreated");
@@ -198,15 +198,17 @@ void PvaClientChannel::channelStateChange(
         << " " << Channel::ConnectionStateNames[connectionState]
         << endl;
     }
-    
     bool waitingForConnect = false;
     if(connectState==connectActive) waitingForConnect = true;
     if(connectionState!=Channel::CONNECTED) {
+        Lock xx(mutex);
         string mess(channelName +
                 " connection state " + Channel::ConnectionStateNames[connectionState]);
         message(mess,errorMessage);
         connectState = notConnected;
     } else {
+        Lock xx(mutex);
+        this->channel = channel;
         connectState = connected;
     }
     if(waitingForConnect) {
@@ -378,6 +380,26 @@ PvaClientGetPtr PvaClientChannel::createGet(PVStructurePtr const &  pvRequest)
     return PvaClientGet::create(yyy,shared_from_this(),pvRequest);
 }
 
+double PvaClientChannel::getDouble(string const & request)
+{
+     return get(request)->getData()->getDouble();
+}
+
+string PvaClientChannel::getString(string const & request)
+{
+    return get(request)->getData()->getString();
+}
+
+shared_vector<const double>  PvaClientChannel::getDoubleArray(string const & request)
+{
+    return get(request)->getData()->getDoubleArray();
+}
+
+shared_vector<const std::string>  PvaClientChannel::getStringArray(string const & request)
+{
+    return get(request)->getData()->getStringArray();
+}
+
 
 PvaClientPutPtr PvaClientChannel::put(string const & request)
 {
@@ -413,6 +435,44 @@ PvaClientPutPtr PvaClientChannel::createPut(PVStructurePtr const & pvRequest)
     return PvaClientPut::create(yyy,shared_from_this(),pvRequest);
 }
 
+void PvaClientChannel::putDouble(double value,string const & request)
+{
+    PvaClientPutPtr clientPut = put(request);
+    PvaClientPutDataPtr putData = clientPut->getData();
+    putData->putDouble(value); clientPut->put();
+}
+
+void PvaClientChannel::putString(std::string const & value,string const & request)
+{
+    PvaClientPutPtr clientPut = put(request);
+    PvaClientPutDataPtr putData = clientPut->getData();
+    putData->putString(value); clientPut->put();
+}
+
+void PvaClientChannel::putDoubleArray(
+    shared_vector<const double> const & value,
+    string const & request)
+{
+    PvaClientPutPtr clientPut = put(request);
+    PvaClientPutDataPtr putData = clientPut->getData();
+    size_t n = value.size();
+    shared_vector<double> valueArray(n);
+    for(size_t i=0; i<n; ++i) valueArray[i] = value[i];
+    putData->putDoubleArray(freeze(valueArray)); clientPut->put();
+}
+
+void PvaClientChannel::putStringArray(
+    shared_vector<const string> const & value,
+    string const & request)
+{
+    PvaClientPutPtr clientPut = put(request);
+    PvaClientPutDataPtr putData = clientPut->getData();
+    size_t n = value.size();
+    shared_vector<string> valueArray(n);
+    for(size_t i=0; i<n; ++i) valueArray[i] = value[i];
+    putData->putStringArray(freeze(valueArray)); clientPut->put();
+}
+
 PvaClientPutGetPtr PvaClientChannel::createPutGet(string const & request)
 {
     PVStructurePtr pvRequest = createRequest->createRequest(request);

src/pvaClientData.cpp

@@ -0,0 +1,361 @@
+/* pvaClientData.cpp */
+/**
+ * Copyright - See the COPYRIGHT that is included with this distribution.
+ * EPICS pvData is distributed subject to a Software License Agreement found
+ * in file LICENSE that is included with this distribution.
+ */
+/**
+ * @author mrk
+ * @date 2019.04
+ */
+
+#include <typeinfo>
+#include <sstream>
+
+#include <pv/createRequest.h>
+#include <pv/convert.h>
+
+#define epicsExportSharedSymbols
+
+#include <pv/pvaClient.h>
+
+using std::tr1::static_pointer_cast;
+using namespace epics::pvData;
+using namespace epics::pvAccess;
+using namespace std;
+
+namespace epics { namespace pvaClient {
+
+
+typedef std::tr1::shared_ptr<PVArray> PVArrayPtr;
+static ConvertPtr convert = getConvert();
+static string noStructure("no pvStructure ");
+static string noValue("no value field");
+static string noScalar("value is not a scalar");
+static string noArray("value is not an array");
+static string noScalarArray("value is not a scalarArray");
+static string noAlarm("no alarm");
+static string noTimeStamp("no timeStamp");
+
+PvaClientDataPtr PvaClientData::create(StructureConstPtr const & structure)
+{
+    if(PvaClient::getDebug()) cout << "PvaClientData::create\n";
+    PvaClientDataPtr epv(new PvaClientData(structure));
+    return epv;
+}
+
+PvaClientData::PvaClientData(StructureConstPtr const & structure)
+: structure(structure)
+{
+}
+
+void PvaClientData::checkValue()
+{
+    if(PvaClient::getDebug()) cout << "PvaClientData::checkValue\n";
+    if(pvValue) return;
+    throw std::runtime_error(messagePrefix + noValue);
+}
+
+void PvaClientData::setMessagePrefix(std::string const & value)
+{
+    messagePrefix = value + " ";
+}
+
+StructureConstPtr PvaClientData::getStructure()
+{
+    return structure;
+}
+
+PVStructurePtr PvaClientData::getPVStructure()
+{
+    if(pvStructure) return pvStructure;
+    throw std::runtime_error(messagePrefix + noStructure);
+}
+
+BitSetPtr PvaClientData::getChangedBitSet()
+{
+    if(bitSet)return bitSet;
+    throw std::runtime_error(messagePrefix + noStructure);
+}
+
+std::ostream & PvaClientData::showChanged(std::ostream & out)
+{
+    if(!bitSet) throw std::runtime_error(messagePrefix + noStructure);
+    size_t nextSet = bitSet->nextSetBit(0);
+    PVFieldPtr pvField;
+    while(nextSet!=string::npos) {
+        if(nextSet==0) {
+             pvField = pvStructure;
+        } else {
+              pvField = pvStructure->getSubField(nextSet);
+        }
+        string name = pvField->getFullName();
+        out << name << " = " << pvField << endl;
+        nextSet = bitSet->nextSetBit(nextSet+1);
+    }
+    return out;
+}
+
+void PvaClientData::setData(
+    PVStructurePtr const & pvStructureFrom,
+    BitSetPtr const & bitSetFrom)
+{
+   if(PvaClient::getDebug()) cout << "PvaClientData::setData\n";
+   pvStructure = pvStructureFrom;
+   bitSet = bitSetFrom;
+   pvValue = pvStructure->getSubField("value");
+}
+
+bool PvaClientData::hasValue()
+{
+    if(PvaClient::getDebug()) cout << "PvaClientData::hasValue\n";
+    if(!pvValue) return false;
+    return true;
+}
+
+bool PvaClientData::isValueScalar()
+{
+    if(PvaClient::getDebug()) cout << "PvaClientData::isValueScalar\n";
+    if(!pvValue) return false;
+    if(pvValue->getField()->getType()==scalar) return true;
+    return false;
+}
+
+bool PvaClientData::isValueScalarArray()
+{
+    if(PvaClient::getDebug()) cout << "PvaClientData::isValueScalarArray\n";
+    if(!pvValue) return false;
+    if(pvValue->getField()->getType()==scalarArray) return true;
+    return false;
+}
+
+PVFieldPtr  PvaClientData::getValue()
+{
+   if(PvaClient::getDebug()) cout << "PvaClientData::getValue\n";
+   checkValue();
+   return pvValue;
+}
+
+PVScalarPtr  PvaClientData::getScalarValue()
+{
+    if(PvaClient::getDebug()) cout << "PvaClientData::getScalarValue\n";
+    checkValue();
+    if(pvValue->getField()->getType()!=scalar) {
+       throw std::runtime_error(messagePrefix + noScalar);
+    }
+    return pvStructure->getSubField<PVScalar>("value");
+}
+
+PVArrayPtr  PvaClientData::getArrayValue()
+{
+    if(PvaClient::getDebug()) cout << "PvaClientData::getArrayValue\n";
+    checkValue();
+    Type type = pvValue->getField()->getType();
+    if(type!=scalarArray && type!=structureArray && type!=unionArray) {
+        throw std::runtime_error(messagePrefix + noArray);
+    }
+    return pvStructure->getSubField<PVArray>("value");
+}
+
+PVScalarArrayPtr  PvaClientData::getScalarArrayValue()
+{
+    if(PvaClient::getDebug()) cout << "PvaClientData::getScalarArrayValue\n";
+    checkValue();
+    Type type = pvValue->getField()->getType();
+    if(type!=scalarArray) {
+        throw std::runtime_error(messagePrefix + noScalarArray);
+    }
+    return pvStructure->getSubField<PVScalarArray>("value");
+}
+
+double PvaClientData::getDouble()
+{
+    if(PvaClient::getDebug()) cout << "PvaClientData::getDouble\n";
+    PVScalarPtr pvScalar;
+    PVStructurePtr pvStructure = getPVStructure();
+    PVFieldPtr pvValue  = pvStructure->getSubField("value");
+    if(pvValue) {
+        Type type = pvValue->getField()->getType();
+        if(type==scalar) pvScalar = static_pointer_cast<PVScalar>(pvValue);
+    }
+    if(!pvScalar) {
+        while(true) {
+             const PVFieldPtrArray fieldPtrArray(pvStructure->getPVFields());
+             if(fieldPtrArray.size()!=1) {
+                  throw std::logic_error(
+                      "PvaClientData::getDouble() pvRequest for multiple fields");
+             }
+             PVFieldPtr pvField(fieldPtrArray[0]);
+             Type type = pvField->getField()->getType();
+             if(type==scalar) {
+                 pvScalar = static_pointer_cast<PVScalar>(pvField);
+                 break;
+             }
+             if(pvField->getField()->getType()!=epics::pvData::structure) break;
+             pvStructure = static_pointer_cast<PVStructure>(pvField);
+        }
+    }
+    if(!pvScalar) {
+        throw std::logic_error(
+            "PvaClientData::getDouble() did not find a scalar field");
+    }
+    ScalarType scalarType = pvScalar->getScalar()->getScalarType();
+    if(scalarType==pvDouble) {
+        PVDoublePtr pvDouble = static_pointer_cast<PVDouble>(pvScalar);
+        return pvDouble->get();
+    }
+    if(!ScalarTypeFunc::isNumeric(scalarType)) {
+        throw std::logic_error(
+            "PvaClientData::getDouble() did not find a numeric scalar field");
+    }
+    return convert->toDouble(pvScalar);
+}
+
+string PvaClientData::getString()
+{
+    if(PvaClient::getDebug()) cout << "PvaClientData::getString\n";
+    PVScalarPtr pvScalar;
+    PVStructurePtr pvStructure = getPVStructure();
+    PVFieldPtr pvValue  = pvStructure->getSubField("value");
+    if(pvValue) {
+        Type type = pvValue->getField()->getType();
+        if(type==scalar) pvScalar = static_pointer_cast<PVScalar>(pvValue);
+    }
+    if(!pvScalar) {
+        while(true) {
+             const PVFieldPtrArray fieldPtrArray(pvStructure->getPVFields());
+             if(fieldPtrArray.size()!=1) {
+                  throw std::logic_error(
+                      "PvaClientData::getString() pvRequest for multiple fields");
+             }
+             PVFieldPtr pvField(fieldPtrArray[0]);
+             Type type = pvField->getField()->getType();
+             if(type==scalar) {
+                 pvScalar = static_pointer_cast<PVScalar>(pvField);
+                 break;
+             }
+             if(pvField->getField()->getType()!=epics::pvData::structure) break;
+             pvStructure = static_pointer_cast<PVStructure>(pvField);
+        }
+    }
+    if(!pvScalar) {
+        throw std::logic_error(
+            "PvaClientData::getString() did not find a scalar field");
+    }
+    return convert->toString(pvScalar);
+}
+
+shared_vector<const double> PvaClientData::getDoubleArray()
+{
+    if(PvaClient::getDebug()) cout << "PvaClientData::getDoubleArray\n";
+    PVScalarArrayPtr pvScalarArray;
+    PVStructurePtr pvStructure = getPVStructure();
+    PVFieldPtr pvValue  = pvStructure->getSubField("value");
+    if(pvValue) {
+        Type type = pvValue->getField()->getType();
+        if(type==scalarArray) {
+            pvScalarArray = static_pointer_cast<PVScalarArray>(pvValue);
+        }
+    }
+    if(!pvScalarArray) {
+        while(true) {
+             const PVFieldPtrArray fieldPtrArray(pvStructure->getPVFields());
+             if(fieldPtrArray.size()!=1) {
+                  throw std::logic_error(
+                      "PvaClientData::getDoubleArray() pvRequest for multiple fields");
+             }
+             PVFieldPtr pvField(fieldPtrArray[0]);
+             Type type = pvField->getField()->getType();
+             if(type==scalarArray) {
+                 pvScalarArray = static_pointer_cast<PVScalarArray>(pvField);
+                 break;
+             }
+             if(pvField->getField()->getType()!=epics::pvData::structure) break;
+             pvStructure = static_pointer_cast<PVStructure>(pvField);
+        }
+    }
+    if(!pvScalarArray) {
+        throw std::logic_error(
+            "PvaClientData::getDoubleArray() did not find a scalarArray field");
+    }
+    ScalarType scalarType = pvScalarArray->getScalarArray()->getElementType();
+    if(!ScalarTypeFunc::isNumeric(scalarType)) {
+        throw std::logic_error(
+            "PvaClientData::getDoubleArray() did not find a numeric scalarArray field");
+    }
+    shared_vector<const double> retValue;
+    pvScalarArray->getAs<const double>(retValue);
+    return retValue;
+}
+
+shared_vector<const string> PvaClientData::getStringArray()
+{
+    if(PvaClient::getDebug()) cout << "PvaClientData::getStringArray\n";
+    PVScalarArrayPtr pvScalarArray;
+    PVStructurePtr pvStructure = getPVStructure();
+    PVFieldPtr pvValue  = pvStructure->getSubField("value");
+    if(pvValue) {
+       Type type = pvValue->getField()->getType();
+        if(type==scalarArray) {
+             pvScalarArray = static_pointer_cast<PVScalarArray>(pvValue);
+        }
+    }
+    if(!pvScalarArray) {
+        while(true) {
+             const PVFieldPtrArray fieldPtrArray(pvStructure->getPVFields());
+             if(fieldPtrArray.size()!=1) {
+                  throw std::logic_error(
+                      "PvaClientData::getStringArray() pvRequest for multiple fields");
+             }
+             PVFieldPtr pvField(fieldPtrArray[0]);
+             Type type = pvField->getField()->getType();
+             if(type==scalarArray) {
+                 pvScalarArray = static_pointer_cast<PVScalarArray>(pvField);
+                 break;
+             }
+             if(pvField->getField()->getType()!=epics::pvData::structure) break;
+             pvStructure = static_pointer_cast<PVStructure>(pvField);
+        }
+    }
+    if(!pvScalarArray) {
+        throw std::logic_error(
+            "PvaClientData::getStringArray() did not find a scalarArray field");
+    }
+    shared_vector<const string> retValue;
+    pvScalarArray->getAs<const string>(retValue);
+    return retValue;
+}
+
+Alarm PvaClientData::getAlarm()
+{
+   if(PvaClient::getDebug()) cout << "PvaClientData::getAlarm\n";
+   if(!pvStructure) throw new std::runtime_error(messagePrefix + noStructure);
+   PVStructurePtr pvs = pvStructure->getSubField<PVStructure>("alarm");
+   if(!pvs) throw std::runtime_error(messagePrefix + noAlarm);
+   pvAlarm.attach(pvs);
+   if(pvAlarm.isAttached()) {
+       Alarm alarm;
+       pvAlarm.get(alarm);
+       pvAlarm.detach();
+       return alarm;
+   }
+   throw std::runtime_error(messagePrefix + noAlarm);
+}
+
+TimeStamp PvaClientData::getTimeStamp()
+{
+   if(PvaClient::getDebug()) cout << "PvaClientData::getTimeStamp\n";
+   if(!pvStructure) throw new std::runtime_error(messagePrefix + noStructure);
+   PVStructurePtr pvs = pvStructure->getSubField<PVStructure>("timeStamp");
+   if(!pvs) throw std::runtime_error(messagePrefix + noTimeStamp);
+   pvTimeStamp.attach(pvs);
+   if(pvTimeStamp.isAttached()) {
+       TimeStamp timeStamp;
+       pvTimeStamp.get(timeStamp);
+       pvTimeStamp.detach();
+       return timeStamp;
+   }
+   throw std::runtime_error(messagePrefix + noTimeStamp);
+}
+
+}}

src/pvaClientGet.cpp

@@ -15,7 +15,6 @@
 
 #include <pv/pvaClient.h>
 
-using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace std;
@@ -99,50 +98,29 @@ PvaClientGet::PvaClientGet(
   getState(getIdle)
 {
      if(PvaClient::getDebug()) {
-        cout << "PvaClientGet::PvaClientGet::PvaClientGet"
+        cout << "PvaClientGet::PvaClientGet channelName "
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+             << pvaClientChannel->getChannel()->getChannelName() << "\n";
-           << endl;
     }
 }
 
 PvaClientGet::~PvaClientGet()
 {
     if(PvaClient::getDebug()) {
-        cout<< "PvaClientGet::~PvaClientGet"
+        cout<< "PvaClientGet::~PvaClientGet channelName "
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << pvaClientChannel->getChannel()->getChannelName() << "\n";
-           << endl;
     }
 }
 
-void PvaClientGet::channelStateChange(PvaClientChannelPtr const & pvaClientChannel, bool isConnected)
-{
-    if(PvaClient::getDebug()) {
-           cout<< "PvaClientGet::channelStateChange"
-               << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-               << " isConnected " << (isConnected ? "true" : "false")
-               << endl;
-    }
-    if(isConnected&&!channelGet)
-    {
-        connectState = connectActive;
-        channelGet = pvaClientChannel->getChannel()->createChannelGet(channelGetRequester,pvRequest);
-    }
-    PvaClientChannelStateChangeRequesterPtr req(pvaClientChannelStateChangeRequester.lock());
-    if(req) {
-          req->channelStateChange(pvaClientChannel,isConnected);
-    }
-}
 
-void PvaClientGet::checkGetState()
+void PvaClientGet::checkConnectState()
 {
     if(PvaClient::getDebug()) {
-        cout << "PvaClientGet::checkGetState"
+        cout << "PvaClientGet::checkConnectState channelName "
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << pvaClientChannel->getChannel()->getChannelName() << "\n";
-           << endl;
     }
     if(!pvaClientChannel->getChannel()->isConnected()) {
         string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
-            + " PvaClientGet::checkGetState channel not connected ";
+            + " PvaClientGet::checkConnectState channel not connected ";
         throw std::runtime_error(message);
     }
     if(connectState==connectIdle) {
@@ -177,10 +155,10 @@ void PvaClientGet::channelGetConnect(
     StructureConstPtr const & structure)
 {
     if(PvaClient::getDebug()) {
-        cout << "PvaClientGet::channelGetConnect"
+        cout << "PvaClientGet::channelGetConnect channelName "
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << pvaClientChannel->getChannel()->getChannelName()
            << " status.isOK " << (status.isOK() ? "true" : "false")
-           << endl;
+           << "\n";
     }
     {
         Lock xx(mutex);
@@ -214,10 +192,10 @@ void PvaClientGet::getDone(
     BitSetPtr const & bitSet)
 {
     if(PvaClient::getDebug()) {
-        cout << "PvaClientGet::getDone"
+        cout << "PvaClientGet::getDone channelName "
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << pvaClientChannel->getChannel()->getChannelName()
            << " status.isOK " << (status.isOK() ? "true" : "false")
-           << endl;
+           << "\n";
     }
     {
         Lock xx(mutex);
@@ -237,9 +215,8 @@ void PvaClientGet::getDone(
 void PvaClientGet::connect()
 {
     if(PvaClient::getDebug()) {
-        cout << "PvaClientGet::connect"
+        cout << "PvaClientGet::connect channelName "
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << pvaClientChannel->getChannel()->getChannelName() << "\n";
-           << endl;
     }
     issueConnect();
     Status status = waitConnect();
@@ -252,9 +229,8 @@ void PvaClientGet::connect()
 void PvaClientGet::issueConnect()
 {
     if(PvaClient::getDebug()) {
-        cout << "PvaClientGet::issueConnect"
+        cout << "PvaClientGet::issueConnect channelName "
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << pvaClientChannel->getChannel()->getChannelName() << "\n";
-           << endl;
     }
     if(connectState!=connectIdle) {
         string message = string("channel ")  + pvaClientChannel->getChannel()->getChannelName()
@@ -269,9 +245,8 @@ void PvaClientGet::issueConnect()
 Status PvaClientGet::waitConnect()
 {
     if(PvaClient::getDebug()) {
-        cout << "PvaClientGet::waitConnect"
+        cout << "PvaClientGet::waitConnect channelName "
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << pvaClientChannel->getChannel()->getChannelName() << "\n";
-           << endl;
     }
     {
         Lock xx(mutex);
@@ -293,9 +268,8 @@ Status PvaClientGet::waitConnect()
 void PvaClientGet::get()
 {
     if(PvaClient::getDebug()) {
-        cout << "PvaClientGet::get"
+        cout << "PvaClientGet::get channelName "
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+          << pvaClientChannel->getChannel()->getChannelName() << "\n";
-           << endl;
     }
     issueGet();
     Status status = waitGet();
@@ -308,9 +282,8 @@ void PvaClientGet::get()
 void PvaClientGet::issueGet()
 {
     if(PvaClient::getDebug()) {
-        cout << "PvaClientGet::issueGet"
+        cout << "PvaClientGet::issueGet channelName "
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << pvaClientChannel->getChannel()->getChannelName() << "\n";
-           << endl;
     }
     if(connectState==connectIdle) connect();
     if(getState==getActive) {
@@ -325,9 +298,8 @@ void PvaClientGet::issueGet()
 Status PvaClientGet::waitGet()
 {
     if(PvaClient::getDebug()) {
-        cout << "PvaClientGet::waitGet"
+        cout << "PvaClientGet::waitGet channelName "
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << pvaClientChannel->getChannel()->getChannelName() << "\n";
-           << endl;
     }
     {
         Lock xx(mutex);
@@ -348,11 +320,10 @@ Status PvaClientGet::waitGet()
 PvaClientGetDataPtr PvaClientGet::getData()
 {
     if(PvaClient::getDebug()) {
-           cout<< "PvaClientGet::getData"
+           cout<< "PvaClientGet::getData  channelName "
-               << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+               << pvaClientChannel->getChannel()->getChannelName() << "\n";
-               << endl;
     }
-    checkGetState();
+    checkConnectState();
     if(getState==getIdle) get();
     return pvaClientData;
 }
@@ -360,9 +331,8 @@ PvaClientGetDataPtr PvaClientGet::getData()
 void PvaClientGet::setRequester(PvaClientGetRequesterPtr const & pvaClientGetRequester)
 {
     if(PvaClient::getDebug()) {
-        cout << "PvaClientGet::setRequester"
+        cout << "PvaClientGet::setRequester channelName "
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << pvaClientChannel->getChannel()->getChannelName() << "\n";
-           << endl;
     }
     this->pvaClientGetRequester = pvaClientGetRequester;
 }

src/pvaClientGetData.cpp

@@ -19,7 +19,6 @@
 
 #include <pv/pvaClient.h>
 
-using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace std;
@@ -27,214 +26,15 @@ using namespace std;
 namespace epics { namespace pvaClient {
 
 
-typedef std::tr1::shared_ptr<PVArray> PVArrayPtr;
-static ConvertPtr convert = getConvert();
-static string noStructure("no pvStructure ");
-static string noValue("no value field");
-static string noScalar("value is not a scalar");
-static string notCompatibleScalar("value is not a compatible scalar");
-static string noArray("value is not an array");
-static string noScalarArray("value is not a scalarArray");
-static string notDoubleArray("value is not a doubleArray");
-static string notStringArray("value is not a stringArray");
-static string noAlarm("no alarm");
-static string noTimeStamp("no timeStamp");
-
 PvaClientGetDataPtr PvaClientGetData::create(StructureConstPtr const & structure)
 {
-    if(PvaClient::getDebug()) {
+    if(PvaClient::getDebug()) cout << "PvaClientGetData::create\n";
-        cout << "PvaClientGetData::create"
-           << endl;
-    }
     PvaClientGetDataPtr epv(new PvaClientGetData(structure));
     return epv;
 }
 
 PvaClientGetData::PvaClientGetData(StructureConstPtr const & structure)
-: structure(structure),
+: PvaClientData(structure)
-  pvStructure(getPVDataCreate()->createPVStructure(structure)),
+{}
-  bitSet(BitSetPtr(new BitSet(pvStructure->getNumberFields())))
-{
-    messagePrefix = "";
-    pvValue = pvStructure->getSubField("value");
-}
-
-void PvaClientGetData::checkValue()
-{
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientGetData::checkValue"
-           << endl;
-    }
-    if(pvValue) return;
-    throw std::runtime_error(messagePrefix + noValue);
-}
-
-void PvaClientGetData::setMessagePrefix(std::string const & value)
-{
-    messagePrefix = value + " ";
-}
-
-StructureConstPtr PvaClientGetData::getStructure()
-{return structure;}
-
-PVStructurePtr PvaClientGetData::getPVStructure()
-{
-    if(pvStructure) return pvStructure;
-    throw std::runtime_error(messagePrefix + noStructure);
-}
-
-BitSetPtr PvaClientGetData::getChangedBitSet()
-{
-    if(bitSet)return bitSet;
-    throw std::runtime_error(messagePrefix + noStructure);
-}
-
-std::ostream & PvaClientGetData::showChanged(std::ostream & out)
-{
-    if(!bitSet) throw std::runtime_error(messagePrefix + noStructure);
-    size_t nextSet = bitSet->nextSetBit(0);
-    PVFieldPtr pvField;
-    while(nextSet!=string::npos) {
-        if(nextSet==0) {
-             pvField = pvStructure;
-        } else {
-              pvField = pvStructure->getSubField(nextSet);
-        }
-        string name = pvField->getFullName();
-        out << name << " = " << pvField << endl;
-        nextSet = bitSet->nextSetBit(nextSet+1);
-    }
-    return out;
-}
-
-void PvaClientGetData::setData(
-    PVStructurePtr const & pvStructureFrom,
-    BitSetPtr const & bitSetFrom)
-{
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientGetData::setData"
-           << endl;
-    }
-   pvStructure = pvStructureFrom;
-   bitSet = bitSetFrom;
-   pvValue = pvStructure->getSubField("value");
-}
-
-bool PvaClientGetData::hasValue()
-{
-    if(!pvValue) return false;
-    return true;
-}
-
-bool PvaClientGetData::isValueScalar()
-{
-    if(!pvValue) return false;
-    if(pvValue->getField()->getType()==scalar) return true;
-    return false;
-}
-
-bool PvaClientGetData::isValueScalarArray()
-{
-    if(!pvValue) return false;
-    if(pvValue->getField()->getType()==scalarArray) return true;
-    return false;
-}
-
-PVFieldPtr  PvaClientGetData::getValue()
-{
-   checkValue();
-   return pvValue;
-}
-
-PVScalarPtr  PvaClientGetData::getScalarValue()
-{
-    checkValue();
-    PVScalarPtr pv = pvStructure->getSubField<PVScalar>("value");
-    if(!pv) throw std::runtime_error(messagePrefix + noScalar);
-    return pv;
-}
-
-PVArrayPtr  PvaClientGetData::getArrayValue()
-{
-    checkValue();
-    PVArrayPtr pv = pvStructure->getSubField<PVArray>("value");
-    if(!pv) throw std::runtime_error(messagePrefix + noArray);
-    return pv;
-}
-
-PVScalarArrayPtr  PvaClientGetData::getScalarArrayValue()
-{
-    checkValue();
-    PVScalarArrayPtr pv = pvStructure->getSubField<PVScalarArray>("value");
-    if(!pv) throw std::runtime_error(messagePrefix + noScalarArray);
-    return pv;
-}
-
-double PvaClientGetData::getDouble()
-{
-    PVScalarPtr pvScalar = getScalarValue();
-    ScalarType scalarType = pvScalar->getScalar()->getScalarType();
-    if(scalarType==pvDouble) {
-        PVDoublePtr pvDouble = static_pointer_cast<PVDouble>(pvScalar);
-        return pvDouble->get();
-    }
-    if(!ScalarTypeFunc::isNumeric(scalarType)) {
-        throw std::runtime_error(messagePrefix + notCompatibleScalar);
-    }
-    return convert->toDouble(pvScalar);
-}
-
-string PvaClientGetData::getString()
-{
-    PVScalarPtr pvScalar = getScalarValue();
-    return convert->toString(pvScalar);
-}
-
-shared_vector<const double> PvaClientGetData::getDoubleArray()
-{
-    checkValue();
-    PVDoubleArrayPtr pv = pvStructure->getSubField<PVDoubleArray>("value");
-    if(!pv) throw std::runtime_error(messagePrefix + notDoubleArray);
-    return pv->view();   
-}
-
-shared_vector<const string> PvaClientGetData::getStringArray()
-{
-    checkValue();
-    PVStringArrayPtr pv = pvStructure->getSubField<PVStringArray>("value");
-    if(!pv) throw std::runtime_error(messagePrefix + notStringArray);
-    return pv->view();   
-}
-
-
-Alarm PvaClientGetData::getAlarm()
-{
-   if(!pvStructure) throw new std::runtime_error(messagePrefix + noStructure);
-   PVStructurePtr pvs = pvStructure->getSubField<PVStructure>("alarm");
-   if(!pvs) throw std::runtime_error(messagePrefix + noAlarm);
-   pvAlarm.attach(pvs);
-   if(pvAlarm.isAttached()) {
-       Alarm alarm;
-       pvAlarm.get(alarm);
-       pvAlarm.detach();
-       return alarm;
-   }
-   throw std::runtime_error(messagePrefix + noAlarm);
-}
-
-TimeStamp PvaClientGetData::getTimeStamp()
-{
-   if(!pvStructure) throw new std::runtime_error(messagePrefix + noStructure);
-   PVStructurePtr pvs = pvStructure->getSubField<PVStructure>("timeStamp");
-   if(!pvs) throw std::runtime_error(messagePrefix + noTimeStamp);
-   pvTimeStamp.attach(pvs);
-   if(pvTimeStamp.isAttached()) {
-       TimeStamp timeStamp;
-       pvTimeStamp.get(timeStamp);
-       pvTimeStamp.detach();
-       return timeStamp;
-   }
-   throw std::runtime_error(messagePrefix + noTimeStamp);
-}
 
 }}

src/pvaClientMonitor.cpp

@@ -17,8 +17,6 @@
 
 #include <pv/pvaClient.h>
 
-using std::tr1::static_pointer_cast;
-using std::tr1::dynamic_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace std;
@@ -83,11 +81,6 @@ PvaClientMonitorPtr PvaClientMonitor::create(
         PvaClientChannelPtr const & pvaClientChannel,
         PVStructurePtr const &pvRequest)
 {
-   if(PvaClient::getDebug()) {
-         cout<< "PvaClientMonitor::create(pvaClient,pvaClientChannel,pvRequest)\n"
-             << " channelName " << pvaClientChannel->getChannel()->getChannelName() 
-             << endl;
-    }
     PvaClientMonitorPtr clientMonitor(new PvaClientMonitor(pvaClient,pvaClientChannel,pvRequest));
     clientMonitor->monitorRequester = MonitorRequesterImplPtr(
         new MonitorRequesterImpl(clientMonitor,pvaClient));
@@ -137,7 +130,9 @@ PvaClientMonitor::PvaClientMonitor(
   userWait(false)
 {
     if(PvaClient::getDebug()) {
-         cout<< "PvaClientMonitor::PvaClientMonitor()" << endl;
+         cout<< "PvaClientMonitor::PvaClientMonitor\n"
+             << " channelName " << pvaClientChannel->getChannel()->getChannelName() 
+             << endl;
     }
 }
 
@@ -174,6 +169,11 @@ void PvaClientMonitor::channelStateChange(PvaClientChannelPtr const & channel, b
 
 void PvaClientMonitor::event(PvaClientMonitorPtr const & monitor)
 {
+    if(PvaClient::getDebug()) {
+        cout << "PvaClientMonitor::event"
+           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << endl;
+    }
     PvaClientMonitorRequesterPtr req(pvaClientMonitorRequester.lock());
     if(req) req->event(monitor);
 }
@@ -434,16 +434,6 @@ bool PvaClientMonitor::poll()
            << endl;
     }
     checkMonitorState();
-    if(!isStarted) {
-        string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
-            + " PvaClientMonitor::poll illegal state ";
-         throw std::runtime_error(message);
-    }
-    if(userPoll) {
-        string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
-            + " PvaClientMonitor::poll did not release last";
-        throw std::runtime_error(message);
-    }
     monitorElement = monitor->poll();
     if(!monitorElement) return false;
     userPoll = true;
@@ -481,11 +471,6 @@ void PvaClientMonitor::releaseEvent()
            << " channelName " << pvaClientChannel->getChannel()->getChannelName()
            << endl;
     }
-    if(!isStarted) {
-        string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
-            + " PvaClientMonitor::releaseEvent monitor not started ";
-        throw std::runtime_error(message);
-    }
     if(!userPoll) {
         string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
             + " PvaClientMonitor::releaseEvent did not call poll";

src/pvaClientMonitorData.cpp

@@ -19,7 +19,6 @@
 
 #include <pv/pvaClient.h>
 
-using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace std;
@@ -53,43 +52,16 @@ PvaClientMonitorDataPtr PvaClientMonitorData::create(StructureConstPtr const & s
 }
 
 PvaClientMonitorData::PvaClientMonitorData(StructureConstPtr const & structure)
-: structure(structure)
+: PvaClientData(structure)
 {
-    messagePrefix = "";
 }
 
 void PvaClientMonitorData::setData(MonitorElementPtr const & monitorElement)
 {
-   pvStructure = monitorElement->pvStructurePtr;
+   PVStructurePtr pvStructure = monitorElement->pvStructurePtr;
-   changedBitSet = monitorElement->changedBitSet;
+   BitSetPtr changedBitSet = monitorElement->changedBitSet;
+   PvaClientData::setData(pvStructure,changedBitSet);
    overrunBitSet = monitorElement->overrunBitSet;
-   pvValue = pvStructure->getSubField("value");
-}
-
-void PvaClientMonitorData::checkValue()
-{
-    if(pvValue) return;
-    throw std::runtime_error(messagePrefix + noValue);
-}
-
-void PvaClientMonitorData::setMessagePrefix(std::string const & value)
-{
-    messagePrefix = value + " ";
-}
-
-StructureConstPtr PvaClientMonitorData::getStructure()
-{return structure;}
-
-PVStructurePtr PvaClientMonitorData::getPVStructure()
-{
-    if(pvStructure) return pvStructure;
-    throw std::runtime_error(messagePrefix + noStructure);
-}
-
-BitSetPtr PvaClientMonitorData::getChangedBitSet()
-{
-    if(!changedBitSet) throw std::runtime_error(messagePrefix + noStructure);
-    return changedBitSet;
 }
 
 BitSetPtr PvaClientMonitorData::getOverrunBitSet()
@@ -98,24 +70,6 @@ BitSetPtr PvaClientMonitorData::getOverrunBitSet()
     return overrunBitSet;
 }
 
-std::ostream & PvaClientMonitorData::showChanged(std::ostream & out)
-{
-    if(!changedBitSet) throw std::runtime_error(messagePrefix + noStructure);
-    size_t nextSet = changedBitSet->nextSetBit(0);
-    PVFieldPtr pvField;
-    while(nextSet!=string::npos) {
-        if(nextSet==0) {
-             pvField = pvStructure;
-        } else {
-              pvField = pvStructure->getSubField(nextSet);
-        }
-        string name = pvField->getFullName();
-        out << name << " = " << pvField << endl;
-        nextSet = changedBitSet->nextSetBit(nextSet+1);
-    }
-    return out;
-}
-
 std::ostream & PvaClientMonitorData::showOverrun(std::ostream & out)
 {
     if(!overrunBitSet) throw std::runtime_error(messagePrefix + noStructure);
@@ -123,9 +77,9 @@ std::ostream & PvaClientMonitorData::showOverrun(std::ostream & out)
     PVFieldPtr pvField;
     while(nextSet!=string::npos) {
         if(nextSet==0) {
-             pvField = pvStructure;
+             pvField = getPVStructure();
         } else {
-              pvField = pvStructure->getSubField(nextSet);
+              pvField = getPVStructure()->getSubField(nextSet);
         }
         string name = pvField->getFullName();
         out << name << " = " << pvField << endl;
@@ -134,135 +88,4 @@ std::ostream & PvaClientMonitorData::showOverrun(std::ostream & out)
     return out;
 }
 
-bool PvaClientMonitorData::hasValue()
-{
-    if(!pvValue) return false;
-    return true;
-}
-
-bool PvaClientMonitorData::isValueScalar()
-{
-    if(!pvValue) return false;
-    if(pvValue->getField()->getType()==scalar) return true;
-    return false;
-}
-
-bool PvaClientMonitorData::isValueScalarArray()
-{
-    if(!pvValue) return false;
-    if(pvValue->getField()->getType()==scalarArray) return true;
-    return false;
-}
-
-PVFieldPtr  PvaClientMonitorData::getValue()
-{
-   checkValue();
-   return pvValue;
-}
-
-PVScalarPtr  PvaClientMonitorData::getScalarValue()
-{
-    checkValue();
-    PVScalarPtr pv = pvStructure->getSubField<PVScalar>("value");
-    if(!pv) {
-        throw std::runtime_error(messagePrefix + noScalar);
-    }
-    return pv;
-}
-
-PVArrayPtr  PvaClientMonitorData::getArrayValue()
-{
-    checkValue();
-    PVArrayPtr pv = pvStructure->getSubField<PVArray>("value");
-    if(!pv) {
-        throw std::runtime_error(messagePrefix + noArray);
-    }
-    return pv;
-}
-
-PVScalarArrayPtr  PvaClientMonitorData::getScalarArrayValue()
-{
-    checkValue();
-    PVScalarArrayPtr pv = pvStructure->getSubField<PVScalarArray>("value");
-    if(!pv) {
-        throw std::runtime_error(messagePrefix + noScalarArray);
-    }
-    return pv;
-}
-
-double PvaClientMonitorData::getDouble()
-{
-    PVScalarPtr pvScalar = getScalarValue();
-    ScalarType scalarType = pvScalar->getScalar()->getScalarType();
-    if(scalarType==pvDouble) {
-        PVDoublePtr pvDouble = static_pointer_cast<PVDouble>(pvScalar);
-        return pvDouble->get();
-    }
-    if(!ScalarTypeFunc::isNumeric(scalarType)) {
-        throw std::runtime_error(messagePrefix + notCompatibleScalar);
-    }
-    return convert->toDouble(pvScalar);
-}
-
-string PvaClientMonitorData::getString()
-{
-    PVScalarPtr pvScalar = getScalarValue();
-    return convert->toString(pvScalar);
-}
-
-shared_vector<const double> PvaClientMonitorData::getDoubleArray()
-{
-    checkValue();
-    PVDoubleArrayPtr pv = pvStructure->getSubField<PVDoubleArray>("value");
-    if(!pv) {
-        throw std::runtime_error(messagePrefix + notDoubleArray);
-    }
-    return pv->view();   
-}
-
-shared_vector<const string> PvaClientMonitorData::getStringArray()
-{
-    checkValue();
-    PVStringArrayPtr pv = pvStructure->getSubField<PVStringArray>("value");
-    if(!pv) {
-        throw std::runtime_error(messagePrefix + notStringArray);
-    }
-    return pv->view();   
-
-}
-
-Alarm PvaClientMonitorData::getAlarm()
-{
-   if(!pvStructure) {
-        throw std::runtime_error(messagePrefix + noAlarm);
-   }
-   PVStructurePtr pvs = pvStructure->getSubField<PVStructure>("alarm");
-   if(!pvs) throw std::runtime_error(messagePrefix + noAlarm);
-   pvAlarm.attach(pvs);
-   if(pvAlarm.isAttached()) {
-       Alarm alarm;
-       pvAlarm.get(alarm);
-       pvAlarm.detach();
-       return alarm;
-   }
-   throw std::runtime_error(messagePrefix + noAlarm);
-}
-
-TimeStamp PvaClientMonitorData::getTimeStamp()
-{
-   if(!pvStructure) {
-        throw std::runtime_error(messagePrefix + noTimeStamp);
-   }
-   PVStructurePtr pvs = pvStructure->getSubField<PVStructure>("timeStamp");
-   if(!pvs) throw std::runtime_error(messagePrefix + noTimeStamp);
-   pvTimeStamp.attach(pvs);
-   if(pvTimeStamp.isAttached()) {
-       TimeStamp timeStamp;
-       pvTimeStamp.get(timeStamp);
-       pvTimeStamp.detach();
-       return timeStamp;
-   }
-   throw std::runtime_error(messagePrefix + noTimeStamp);
-}
-
 }}

src/pvaClientMultiChannel.cpp

@@ -17,9 +17,6 @@
 
 #include <pv/pvaClientMultiChannel.h>
 
-
-
-using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace std;

src/pvaClientMultiGetDouble.cpp

@@ -16,7 +16,6 @@
 
 #include <pv/pvaClientMultiChannel.h>
 
-using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace epics::nt;

src/pvaClientMultiMonitorDouble.cpp

@@ -16,7 +16,6 @@
 
 #include <pv/pvaClientMultiChannel.h>
 
-using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace epics::nt;

src/pvaClientMultiPutDouble.cpp

@@ -16,7 +16,6 @@
 
 #include <pv/pvaClientMultiChannel.h>
 
-using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace epics::nt;

src/pvaClientNTMultiData.cpp

@@ -15,7 +15,6 @@
 
 #include <pv/pvaClientMultiChannel.h>
 
-using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace epics::nt;

src/pvaClientNTMultiGet.cpp

@@ -15,7 +15,6 @@
 
 #include <pv/pvaClientMultiChannel.h>
 
-using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace epics::nt;

src/pvaClientNTMultiMonitor.cpp

@@ -18,7 +18,6 @@
 
 #include <pv/pvaClientMultiChannel.h>
 
-using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace epics::nt;

src/pvaClientNTMultiPut.cpp

@@ -17,7 +17,6 @@
 
 #include <pv/pvaClientMultiChannel.h>
 
-using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace epics::nt;

src/pvaClientProcess.cpp

@@ -15,7 +15,6 @@
 
 #include <pv/pvaClient.h>
 
-using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace std;
@@ -112,50 +111,6 @@ PvaClientProcess::~PvaClientProcess()
     }
 }
 
-void PvaClientProcess::channelStateChange(PvaClientChannelPtr const & pvaClientChannel, bool isConnected)
-{
-    if(PvaClient::getDebug()) {
-           cout<< "PvaClientProcess::channelStateChange"
-               << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-               << " isConnected " << (isConnected ? "true" : "false")
-               << endl;
-    }
-    if(isConnected)
-    {
-        connectState = connectActive;
-        channelProcess = pvaClientChannel->getChannel()->createChannelProcess(channelProcessRequester,pvRequest);
-    }
-    PvaClientChannelStateChangeRequesterPtr req(pvaClientChannelStateChangeRequester.lock());
-    if(req) {
-          req->channelStateChange(pvaClientChannel,isConnected);
-    }
-}
-
-void PvaClientProcess::checkProcessState()
-{
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientProcess::checkProcessState"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
-    if(!pvaClientChannel->getChannel()->isConnected()) {
-        string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
-            + " PvaClientProcess::checkProcessState channel not connected ";
-        throw std::runtime_error(message);
-    }
-    if(connectState==connectIdle) {
-        connect();
-    }
-    if(connectState==connectActive){
-        string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
-            + " "
-            + channelProcessConnectStatus.getMessage();
-        throw std::runtime_error(message);
-    }
-    if(processState==processIdle) process();
-}
-
-
 // from ChannelProcessRequester
 string PvaClientProcess::getRequesterName()
 {
@@ -255,6 +210,7 @@ void PvaClientProcess::issueConnect()
         throw std::runtime_error(message);
     }
     connectState = connectActive;
+    channelProcessConnectStatus = Status(Status::STATUSTYPE_ERROR, "connect active");
     channelProcess = pvaClientChannel->getChannel()->createChannelProcess(channelProcessRequester,pvRequest);
 }
 
@@ -302,7 +258,7 @@ void PvaClientProcess::issueProcess()
            << endl;
     }
     if(connectState==connectIdle) connect();
-    if(processState!=processIdle) {
+    if(processState==processActive) {
         string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
             + " PvaClientProcess::issueProcess process aleady active ";
         throw std::runtime_error(message);

src/pvaClientPut.cpp

@@ -15,7 +15,6 @@
 
 #include <pv/pvaClient.h>
 
-using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace std;
@@ -118,29 +117,11 @@ PvaClientPut::~PvaClientPut()
     }
 }
 
-void PvaClientPut::channelStateChange(PvaClientChannelPtr const & pvaClientChannel, bool isConnected)
-{
-    if(PvaClient::getDebug()) {
-           cout<< "PvaClientPut::channelStateChange"
-               << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-               << " isConnected " << (isConnected ? "true" : "false")
-               << endl;
-    }
-    if(isConnected&&!channelPut)
-    {
-        connectState = connectActive;
-        channelPut = pvaClientChannel->getChannel()->createChannelPut(channelPutRequester,pvRequest);
-    }
-    PvaClientChannelStateChangeRequesterPtr req(pvaClientChannelStateChangeRequester.lock());
-    if(req) {
-          req->channelStateChange(pvaClientChannel,isConnected);
-    }
-}
 
-void PvaClientPut::checkPutState()
+void PvaClientPut::checkConnectState()
 {
     if(PvaClient::getDebug()) {
-        cout << "PvaClientPut::checkPutState"
+        cout << "PvaClientPut::checkConnectState"
            << " channelName " << pvaClientChannel->getChannel()->getChannelName()
            << endl;
     }
@@ -217,13 +198,17 @@ void PvaClientPut::getDone(
            << " status.isOK " << (status.isOK() ? "true" : "false")
            << endl;
     }
-    channelGetPutStatus = status;
+    {
-    if(status.isOK()) {
+        Lock xx(mutex);
-        PVStructurePtr pvs = pvaClientData->getPVStructure();
+        channelGetPutStatus = status;
-        pvs->copyUnchecked(*pvStructure,*bitSet);
+        if(status.isOK()) {
-        BitSetPtr bs = pvaClientData->getChangedBitSet();
+            PVStructurePtr pvs = pvaClientData->getPVStructure();
-        bs->clear();
+            pvs->copyUnchecked(*pvStructure,*bitSet);
-        *bs |= *bitSet;
+            BitSetPtr bs = pvaClientData->getChangedBitSet();
+            bs->clear();
+            *bs |= *bitSet;
+            putState = putComplete;
+        }
     }
     PvaClientPutRequesterPtr  req(pvaClientPutRequester.lock());
     if(req) {
@@ -242,7 +227,11 @@ void PvaClientPut::putDone(
            << " status.isOK " << (status.isOK() ? "true" : "false")
            << endl;
     }
-    channelGetPutStatus = status;
+    {
+        Lock xx(mutex);
+        channelGetPutStatus = status;
+        putState = putComplete;
+    }
     PvaClientPutRequesterPtr  req(pvaClientPutRequester.lock());
     if(req) {
           req->putDone(status,shared_from_this());
@@ -351,14 +340,17 @@ Status PvaClientPut::waitGet()
            << " channelName " << pvaClientChannel->getChannel()->getChannelName()
            << endl;
     }
-    if(putState!=getActive){
+    {
-        string message = string("channel ")
+        Lock xx(mutex);
-            + pvaClientChannel->getChannel()->getChannelName()
+        if(putState==putComplete) return channelGetPutStatus;
-            +  " PvaClientPut::waitGet illegal put state";
+        if(putState!=getActive){
-        throw std::runtime_error(message);
+            string message = string("channel ")
+                + pvaClientChannel->getChannel()->getChannelName()
+                +  " PvaClientPut::waitGet illegal put state";
+            throw std::runtime_error(message);
+        }
     }
     waitForGetPut.wait();
-    putState = putComplete;
     return channelGetPutStatus;
 }
 
@@ -392,7 +384,7 @@ void PvaClientPut::issuePut()
     if(putState==getActive || putState==putActive) {
          string message = string("channel ")
             + pvaClientChannel->getChannel()->getChannelName()
-            +  "PvaClientPut::issueGet get or put aleady active ";
+            +  "PvaClientPut::issuePut get or put aleady active ";
          throw std::runtime_error(message);
     }
     putState = putActive;
@@ -406,14 +398,17 @@ Status PvaClientPut::waitPut()
            << " channelName " << pvaClientChannel->getChannel()->getChannelName()
            << endl;
     }
-    if(putState!=putActive){
+    {
-         string message = string("channel ")
+        Lock xx(mutex);
-            + pvaClientChannel->getChannel()->getChannelName()
+        if(putState==putComplete) return channelGetPutStatus;
-            +  " PvaClientPut::waitPut illegal put state";
+        if(putState!=putActive){
-         throw std::runtime_error(message);
+            string message = string("channel ")
+                + pvaClientChannel->getChannel()->getChannelName()
+                +  " PvaClientPut::waitPut illegal put state";
+            throw std::runtime_error(message);
+        }
     }
     waitForGetPut.wait();
-    putState = putComplete;
     if(channelGetPutStatus.isOK()) pvaClientData->getChangedBitSet()->clear();
     return channelGetPutStatus;
 }
@@ -425,7 +420,7 @@ PvaClientPutDataPtr PvaClientPut::getData()
                << " channelName " << pvaClientChannel->getChannel()->getChannelName()
                << endl;
     }
-    checkPutState();
+    checkConnectState();
     if(putState==putIdle) get();
     return pvaClientData;
 }

src/pvaClientPutData.cpp

@@ -25,6 +25,10 @@ using namespace epics::pvAccess;
 using namespace std;
 
 namespace epics { namespace pvaClient {
+static ConvertPtr convert = getConvert();
+static string notCompatibleScalar("value is not a compatible scalar");
+static string notDoubleArray("value is not a doubleArray");
+static string notStringArray("value is not a stringArray");
 
 class PvaClientPostHandlerPvt: public PostHandler
 {
@@ -36,28 +40,21 @@ public:
     void postPut() { putData->postPut(fieldNumber);}
 };
 
-typedef std::tr1::shared_ptr<PVArray> PVArrayPtr;
-static ConvertPtr convert = getConvert();
-static string noValue("no value field");
-static string notScalar("value is not a scalar");
-static string notCompatibleScalar("value is not a compatible scalar");
-static string notArray("value is not an array");
-static string notScalarArray("value is not a scalarArray");
-static string notDoubleArray("value is not a doubleArray");
-static string notStringArray("value is not a stringArray");
 
 PvaClientPutDataPtr PvaClientPutData::create(StructureConstPtr const & structure)
 {
+    if(PvaClient::getDebug()) cout << "PvaClientPutData::create\n";
     PvaClientPutDataPtr epv(new PvaClientPutData(structure));
     return epv;
 }
 
 PvaClientPutData::PvaClientPutData(StructureConstPtr const & structure)
-: structure(structure),
+: PvaClientData(structure)
-  pvStructure(getPVDataCreate()->createPVStructure(structure)),
-  bitSet(BitSetPtr(new BitSet(pvStructure->getNumberFields())))
 {
-    messagePrefix = "";
+    if(PvaClient::getDebug()) cout << "PvaClientPutData::PvaClientPutData\n";
+    PVStructurePtr pvStructure(getPVDataCreate()->createPVStructure(structure));
+    BitSetPtr bitSet(BitSetPtr(new BitSet(pvStructure->getNumberFields())));
+    setData(pvStructure,bitSet);
     size_t nfields = pvStructure->getNumberFields();
     postHandler.resize(nfields);
     PVFieldPtr pvField;
@@ -71,145 +68,40 @@ PvaClientPutData::PvaClientPutData(StructureConstPtr const & structure)
         }
         pvField->setPostHandler(postHandler[i]);
     }
-    pvValue = pvStructure->getSubField("value");
 }
 
-void PvaClientPutData::checkValue()
-{
-    if(pvValue) return;
-    throw std::runtime_error(messagePrefix + noValue);
-}
-
-void PvaClientPutData::postPut(size_t fieldNumber)
-{
-    bitSet->set(fieldNumber);
-}
-
-void PvaClientPutData::setMessagePrefix(std::string const & value)
-{
-    messagePrefix = value + " ";
-}
-
-StructureConstPtr PvaClientPutData::getStructure()
-{return structure;}
-
-PVStructurePtr PvaClientPutData::getPVStructure()
-{return pvStructure;}
-
-BitSetPtr PvaClientPutData::getChangedBitSet()
-{return bitSet;}
-
-std::ostream & PvaClientPutData::showChanged(std::ostream & out)
-{
-    size_t nextSet = bitSet->nextSetBit(0);
-    PVFieldPtr pvField;
-    while(nextSet!=string::npos) {
-        if(nextSet==0) {
-             pvField = pvStructure;
-        } else {
-              pvField = pvStructure->getSubField(nextSet);
-        }
-        string name = pvField->getFullName();
-        out << name << " = " << pvField << endl;
-        nextSet = bitSet->nextSetBit(nextSet+1);
-    }
-    return out;
-}
-
-bool PvaClientPutData::hasValue()
-{
-    if(!pvValue) return false;
-    return true;
-}
-
-bool PvaClientPutData::isValueScalar()
-{
-    if(!pvValue) return false;
-    if(pvValue->getField()->getType()==scalar) return true;
-    return false;
-}
-
-bool PvaClientPutData::isValueScalarArray()
-{
-    if(!pvValue) return false;
-    if(pvValue->getField()->getType()==scalarArray) return true;
-    return false;
-}
-
-PVFieldPtr  PvaClientPutData::getValue()
-{
-   checkValue();
-   return pvValue;
-}
-
-PVScalarPtr  PvaClientPutData::getScalarValue()
-{
-    checkValue();
-    PVScalarPtr pv = pvStructure->getSubField<PVScalar>("value");
-    if(!pv) throw std::runtime_error(messagePrefix + notScalar);
-    return pv;
-}
-
-PVArrayPtr  PvaClientPutData::getArrayValue()
-{
-    checkValue();
-    PVArrayPtr pv = pvStructure->getSubField<PVArray>("value");
-    if(!pv) throw std::runtime_error(messagePrefix + notArray);
-    return pv;
-}
-
-PVScalarArrayPtr  PvaClientPutData::getScalarArrayValue()
-{
-    checkValue();
-    PVScalarArrayPtr pv = pvStructure->getSubField<PVScalarArray>("value");
-    if(!pv) throw std::runtime_error(messagePrefix + notScalarArray);
-    return pv;
-}
-
-double PvaClientPutData::getDouble()
-{
-    PVScalarPtr pvScalar = getScalarValue();
-    ScalarType scalarType = pvScalar->getScalar()->getScalarType();
-    if(scalarType==pvDouble) {
-        PVDoublePtr pvDouble = static_pointer_cast<PVDouble>(pvScalar);
-        return pvDouble->get();
-    }
-    if(!ScalarTypeFunc::isNumeric(scalarType)) {
-        throw std::runtime_error(messagePrefix  + notCompatibleScalar);
-    }
-    return convert->toDouble(pvScalar);
-}
-
-string PvaClientPutData::getString()
-{
-    PVScalarPtr pvScalar = getScalarValue();
-    return convert->toString(pvScalar);
-}
-
-shared_vector<const double> PvaClientPutData::getDoubleArray()
-{
-    checkValue();
-    PVDoubleArrayPtr pv = pvStructure->getSubField<PVDoubleArray>("value");
-    if(!pv) {
-        throw std::runtime_error(messagePrefix + notDoubleArray);
-    }
-    return pv->view();   
-}
-
-shared_vector<const string> PvaClientPutData::getStringArray()
-{
-    checkValue();
-    PVStringArrayPtr pv = pvStructure->getSubField<PVStringArray>("value");
-    if(!pv) {
-        throw std::runtime_error(messagePrefix + notStringArray);
-    }
-    return pv->view();   
-
-}
 
 void PvaClientPutData::putDouble(double value)
 {
-    PVScalarPtr pvScalar = getScalarValue();
+    if(PvaClient::getDebug()) cout << "PvaClientPutData::putDouble\n";
+    PVScalarPtr pvScalar;
+    PVStructurePtr pvStructure = getPVStructure();
+    PVFieldPtr pvValue  = pvStructure->getSubField("value");
+    if(pvValue) {
+        Type type = pvValue->getField()->getType();
+        if(type==scalar) pvScalar = static_pointer_cast<PVScalar>(pvValue);
+    }
+    if(!pvScalar) {
+        while(true) {
+             const PVFieldPtrArray fieldPtrArray(pvStructure->getPVFields());
+             if(fieldPtrArray.size()!=1) {
+                  throw std::logic_error(
+                      "PvaClientData::putDouble() pvRequest for multiple fields");
+             }
+             PVFieldPtr pvField(fieldPtrArray[0]);
+             Type type = pvField->getField()->getType();
+             if(type==scalar) {
+                 pvScalar = static_pointer_cast<PVScalar>(pvField);
+                 break;
+             }
+             if(pvField->getField()->getType()!=epics::pvData::structure) break;
+             pvStructure = static_pointer_cast<PVStructure>(pvField);
+        }
+    }
+    if(!pvScalar) {
+        throw std::logic_error(
+            "PvaClientData::putDouble() did not find a scalar field");
+    }
     ScalarType scalarType = pvScalar->getScalar()->getScalarType();
     if(scalarType==pvDouble) {
         PVDoublePtr pvDouble = static_pointer_cast<PVDouble>(pvScalar);
@@ -217,47 +109,138 @@ void PvaClientPutData::putDouble(double value)
          return;
     }
     if(!ScalarTypeFunc::isNumeric(scalarType)) {
-        throw std::runtime_error(messagePrefix + notCompatibleScalar);
+        throw std::logic_error(
+            "PvaClientData::putDouble() did not find a numeric scalar field");
     }
     convert->fromDouble(pvScalar,value);
 }
 
 void PvaClientPutData::putString(std::string const & value)
 {
-    PVScalarPtr pvScalar = getScalarValue();
+    if(PvaClient::getDebug()) cout << "PvaClientPutData::putString\n";
+    PVScalarPtr pvScalar;
+    PVStructurePtr pvStructure = getPVStructure();
+    PVFieldPtr pvValue  = pvStructure->getSubField("value");
+    if(pvValue) {
+        Type type = pvValue->getField()->getType();
+        if(type==scalar) pvScalar = static_pointer_cast<PVScalar>(pvValue);
+    }
+    if(!pvScalar) {
+        while(true) {
+             const PVFieldPtrArray fieldPtrArray(pvStructure->getPVFields());
+             if(fieldPtrArray.size()!=1) {
+                  throw std::logic_error(
+                      "PvaClientData::putString() pvRequest for multiple fields");
+             }
+             PVFieldPtr pvField(fieldPtrArray[0]);
+             Type type = pvField->getField()->getType();
+             if(type==scalar) {
+                 pvScalar = static_pointer_cast<PVScalar>(pvField);
+                 break;
+             }
+             if(pvField->getField()->getType()!=epics::pvData::structure) break;
+             pvStructure = static_pointer_cast<PVStructure>(pvField);
+        }
+    }
+    if(!pvScalar) {
+        throw std::logic_error(
+            "PvaClientData::putString() did not find a scalar field");
+    }
     convert->fromString(pvScalar,value);
 }
 
-
-
 void PvaClientPutData::putDoubleArray(shared_vector<const double> const & value)
 {
-    checkValue();
+    if(PvaClient::getDebug()) cout << "PvaClientPutData::putDoubleArray\n";
-    PVDoubleArrayPtr pv = pvStructure->getSubField<PVDoubleArray>("value");
+    PVScalarArrayPtr pvScalarArray;
-    if(!pv) {
+    PVStructurePtr pvStructure = getPVStructure();
-        throw std::runtime_error(messagePrefix + notDoubleArray);
+    PVFieldPtr pvValue  = pvStructure->getSubField("value");
+    if(pvValue) {
+        Type type = pvValue->getField()->getType();
+        if(type==scalarArray) {
+             pvScalarArray = static_pointer_cast<PVScalarArray>(pvValue);
+        }
     }
-    pv->replace(value);
+    if(!pvScalarArray) {
+        while(true) {
+             const PVFieldPtrArray fieldPtrArray(pvStructure->getPVFields());
+             if(fieldPtrArray.size()!=1) {
+                  throw std::logic_error(
+                      "PvaClientData::putDoubleArray() pvRequest for multiple fields");
+             }
+             PVFieldPtr pvField(fieldPtrArray[0]);
+             Type type = pvField->getField()->getType();
+             if(type==scalarArray) {
+                 PVScalarArrayPtr pvScalarArray = static_pointer_cast<PVScalarArray>(pvField);
+                 break;
+             }
+             if(pvField->getField()->getType()!=epics::pvData::structure) break;
+             pvStructure = static_pointer_cast<PVStructure>(pvField);
+        }
+    }
+    if(!pvScalarArray) {
+        throw std::logic_error(
+            "PvaClientData::putDoubleArray() did not find a scalarArray field");
+    }
+    ScalarType scalarType = pvScalarArray->getScalarArray()->getElementType();
+    if(!ScalarTypeFunc::isNumeric(scalarType)) {
+        throw std::logic_error(
+            "PvaClientData::putDoubleArray() did not find a numeric scalarArray field");
+    }
+    pvScalarArray->putFrom<const double>(value);
 }
 
 void PvaClientPutData::putStringArray(shared_vector<const std::string> const & value)
 {
-    checkValue();
+    if(PvaClient::getDebug()) cout << "PvaClientPutData::putStringArray\n";
-    PVStringArrayPtr pv = pvStructure->getSubField<PVStringArray>("value");
+    PVScalarArrayPtr pvScalarArray;
-    if(!pv) {
+    PVStructurePtr pvStructure = getPVStructure();
-        throw std::runtime_error(messagePrefix + notStringArray);
+    PVFieldPtr pvValue  = pvStructure->getSubField("value");
+    if(pvValue) {
+       Type type = pvValue->getField()->getType();
+        if(type==scalarArray) {
+             pvScalarArray = static_pointer_cast<PVScalarArray>(pvValue);
+        }
     }
-    pv->replace(value);
+    if(!pvScalarArray) {
+        while(true) {
+             const PVFieldPtrArray fieldPtrArray(pvStructure->getPVFields());
+             if(fieldPtrArray.size()!=1) {
+                  throw std::logic_error(
+                      "PvaClientData::putStringArray() pvRequest for multiple fields");
+             }
+             PVFieldPtr pvField(fieldPtrArray[0]);
+             Type type = pvField->getField()->getType();
+             if(type==scalarArray) {
+                 pvScalarArray = static_pointer_cast<PVScalarArray>(pvField);
+                 break;
+             }
+             if(pvField->getField()->getType()!=epics::pvData::structure) break;
+             pvStructure = static_pointer_cast<PVStructure>(pvField);
+        }
+    }
+    if(!pvScalarArray) {
+        throw std::logic_error(
+            "PvaClientData::putStringArray() did not find a scalarArray field");
+    }
+    pvScalarArray->putFrom<const string>(value);
+    return;
 }
 
-void PvaClientPutData::putStringArray(std::vector<std::string> const & value)
+void PvaClientPutData::putStringArray(std::vector<string> const & value)
 {
-    checkValue();
+    size_t length = value.size();
-    PVScalarArrayPtr pv = pvStructure->getSubField<PVScalarArray>("value");
+    shared_vector<string> val(length);
-    if(!pv) {
+    for(size_t i=0; i < length; ++i) val[i] = value[i];
-        throw std::runtime_error(messagePrefix + notScalarArray);
+    putStringArray(freeze(val));
-    }
+    return;
-    convert->fromStringArray(pv,0,value.size(),value,0);
 }
 
+void PvaClientPutData::postPut(size_t fieldNumber)
+{
+    if(PvaClient::getDebug()) cout << "PvaClientPutData::postPut\n";
+    getChangedBitSet()->set(fieldNumber);
+}
+
+
 }}

src/pvaClientPutGet.cpp

@@ -14,7 +14,6 @@
 
 #include <pv/pvaClient.h>
 
-using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace std;
@@ -131,25 +130,6 @@ PvaClientPutGet::~PvaClientPutGet()
     }
 }
 
-void PvaClientPutGet::channelStateChange(PvaClientChannelPtr const & pvaClientChannel, bool isConnected)
-{
-    if(PvaClient::getDebug()) {
-           cout<< "PvaClientPutGet::channelStateChange"
-               << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-               << " isConnected " << (isConnected ? "true" : "false")
-               << endl;
-    }
-    if(isConnected&&!channelPutGet)
-    {
-        connectState = connectActive;
-        channelPutGet = pvaClientChannel->getChannel()->createChannelPutGet(channelPutGetRequester,pvRequest);
-    }
-    PvaClientChannelStateChangeRequesterPtr req(pvaClientChannelStateChangeRequester.lock());
-    if(req) {
-          req->channelStateChange(pvaClientChannel,isConnected);
-    }
-}
-
 void PvaClientPutGet::checkPutGetState()
 {
     if(PvaClient::getDebug()) {
@@ -193,7 +173,7 @@ void PvaClientPutGet::channelPutGetConnect(
            << " channelName " << pvaClientChannel->getChannel()->getChannelName()
            << " status.isOK " << (status.isOK() ? "true" : "false")
            << endl;
-    }
+    } 
     {
         Lock xx(mutex);
         this->channelPutGet = channelPutGet;
@@ -234,13 +214,13 @@ void PvaClientPutGet::putGetDone(
            << " status.isOK " << (status.isOK() ? "true" : "false")
            << endl;
     }
-    channelPutGetStatus = status;
+    {
-    if(status.isOK()) {
+        Lock xx(mutex);
-        PVStructurePtr pvs = pvaClientGetData->getPVStructure();
+        channelPutGetStatus = status;
-        pvs->copyUnchecked(*getPVStructure,*getChangedBitSet);
+        putGetState = putGetComplete;
-        BitSetPtr bs = pvaClientGetData->getChangedBitSet();
+        if(status.isOK()) {
-        bs->clear();
+            pvaClientGetData->setData(getPVStructure,getChangedBitSet);
-        *bs |= *getChangedBitSet;
+        }
     }
     PvaClientPutGetRequesterPtr  req(pvaClientPutGetRequester.lock());
     if(req) {
@@ -261,13 +241,17 @@ void PvaClientPutGet::getPutDone(
            << " status.isOK " << (status.isOK() ? "true" : "false")
            << endl;
     }
-    channelPutGetStatus = status;
+    {
-    if(status.isOK()) {
+        Lock xx(mutex);
-        PVStructurePtr pvs = pvaClientPutData->getPVStructure();
+        channelPutGetStatus = status;
-        pvs->copyUnchecked(*putPVStructure,*putBitSet);
+        putGetState = putGetComplete;
-        BitSetPtr bs = pvaClientPutData->getChangedBitSet();
+        if(status.isOK()) {
-        bs->clear();
+            PVStructurePtr pvs = pvaClientPutData->getPVStructure();
-        *bs |= *putBitSet;
+            pvs->copyUnchecked(*putPVStructure,*putBitSet);
+            BitSetPtr bs = pvaClientPutData->getChangedBitSet();
+            bs->clear();
+            *bs |= *putBitSet;
+        }
     }
     PvaClientPutGetRequesterPtr  req(pvaClientPutGetRequester.lock());
     if(req) {
@@ -288,13 +272,13 @@ void PvaClientPutGet::getGetDone(
            << " status.isOK " << (status.isOK() ? "true" : "false")
            << endl;
     }
-    channelPutGetStatus = status;
+    {
-    if(status.isOK()) {
+        Lock xx(mutex);
-        PVStructurePtr pvs = pvaClientGetData->getPVStructure();
+        channelPutGetStatus = status;
-        pvs->copyUnchecked(*getPVStructure,*getChangedBitSet);
+        putGetState = putGetComplete;
-        BitSetPtr bs = pvaClientGetData->getChangedBitSet();
+        if(status.isOK()) {
-        bs->clear();
+            pvaClientGetData->setData(getPVStructure,getChangedBitSet);
-        *bs |= *getChangedBitSet;
+        }
     }
     PvaClientPutGetRequesterPtr  req(pvaClientPutGetRequester.lock());
     if(req) {
@@ -407,6 +391,7 @@ Status PvaClientPutGet::waitPutGet()
            << " channelName " << pvaClientChannel->getChannel()->getChannelName()
            << endl;
     }
+    if(putGetState==putGetComplete) return channelPutGetStatus;
     if(putGetState!=putGetActive){
         string message = string("channel ")
             + pvaClientChannel->getChannel()->getChannelName()
@@ -414,7 +399,6 @@ Status PvaClientPutGet::waitPutGet()
         throw std::runtime_error(message);
     }
     waitForPutGet.wait();
-    putGetState = putGetComplete;
     if(channelPutGetStatus.isOK()) pvaClientPutData->getChangedBitSet()->clear();
     return channelPutGetStatus;
 }
@@ -461,6 +445,7 @@ Status PvaClientPutGet::waitGetGet()
            << " channelName " << pvaClientChannel->getChannel()->getChannelName()
            << endl;
     }
+    if(putGetState==putGetComplete) return channelPutGetStatus;
     if(putGetState!=putGetActive){
         string message = string("channel ")
             + pvaClientChannel->getChannel()->getChannelName()
@@ -468,7 +453,6 @@ Status PvaClientPutGet::waitGetGet()
         throw std::runtime_error(message);
     }
     waitForPutGet.wait();
-    putGetState = putGetComplete;
     return channelPutGetStatus;
 }
 
@@ -514,6 +498,7 @@ Status PvaClientPutGet::waitGetPut()
            << " channelName " << pvaClientChannel->getChannel()->getChannelName()
            << endl;
     }
+    if(putGetState==putGetComplete) return channelPutGetStatus;
     if(putGetState!=putGetActive){
         string message = string("channel ")
             + pvaClientChannel->getChannel()->getChannelName()
@@ -521,7 +506,6 @@ Status PvaClientPutGet::waitGetPut()
         throw std::runtime_error(message);
     }
     waitForPutGet.wait();
-    putGetState = putGetComplete;
     return channelPutGetStatus;
 }
 
@@ -533,7 +517,10 @@ PvaClientGetDataPtr PvaClientPutGet::getGetData()
                << endl;
     }
     checkPutGetState();
-    if(putGetState==putGetIdle) getGet();
+    if(putGetState==putGetIdle){
+       getGet();
+       getPut();
+    }
     return pvaClientGetData;
 }
 
@@ -545,7 +532,10 @@ PvaClientPutDataPtr PvaClientPutGet::getPutData()
                << endl;
     }
     checkPutGetState();
-   if(putGetState==putGetIdle) getPut();
+    if(putGetState==putGetIdle){
+       getGet();
+       getPut();
+    }
     return pvaClientPutData;
 }
 
@@ -565,6 +555,4 @@ PvaClientChannelPtr PvaClientPutGet::getPvaClientChannel()
     return pvaClientChannel;
 }
 
-
-
 }}

src/pvaClientRPC.cpp

@@ -17,8 +17,6 @@
 
 #include <pv/pvaClient.h>
 
-using std::tr1::static_pointer_cast;
-using std::tr1::dynamic_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace std;