epics/pvaClient
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This commit is contained in:
mrkraimer
2019-04-06 11:30:10 -04:00
parent 763c41caa3
commit 99a7e3b0b5
2 changed files with 302 additions and 98 deletions
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228
src/pvaClientData.cpp
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@@ -32,11 +32,8 @@ 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");
@@ -107,27 +104,6 @@ void PvaClientData::setData(
pvStructure = pvStructureFrom;
bitSet = bitSetFrom;
pvValue = pvStructure->getSubField("value");
if(pvValue) return;
// look for first field named value or is scalar or scalarArray
PVStructurePtr pvStructure = pvStructureFrom;
while(true) {
PVFieldPtr pvField(pvStructure->getPVFields()[0]);
if((pvField->getFieldName().compare("value")) == 0) {
pvValue = pvField;
return;
}
if(pvField->getField()->getType()==scalar) {
pvValue = pvField;
return;
}
if(pvField->getField()->getType()==scalarArray) {
pvValue = pvField;
return;
}
if(pvField->getField()->getType()!=epics::pvData::structure) break;
pvStructure = static_pointer_cast<PVStructure>(pvField);
}
messagePrefix = "did not find a field named value or a field that is a scalar or scalar array";
}
bool PvaClientData::hasValue()
@@ -142,24 +118,6 @@ bool PvaClientData::isValueScalar()
if(PvaClient::getDebug()) cout << "PvaClientData::isValueScalar\n";
if(!pvValue) return false;
if(pvValue->getField()->getType()==scalar) return true;
if(pvValue->getField()->getType()!=epics::pvData::structure) return false;
PVStructurePtr pvStructure = static_pointer_cast<PVStructure>(pvValue);
while(true) {
if(!pvStructure) break;
const PVFieldPtrArray fieldPtrArray(pvStructure->getPVFields());
if(fieldPtrArray.size()<1) {
throw std::logic_error("PvaClientData::isValueScalar() found empty structure");
}
PVFieldPtr pvField(fieldPtrArray[0]);
if(!pvField) throw std::logic_error("PvaClientData::isValueScalar() found null field");
if(pvField->getField()->getType()==scalar) {
pvValue = pvField;
return true;
}
if(pvField->getField()->getType()!=epics::pvData::structure) break;
PVStructurePtr pvStructure = static_pointer_cast<PVStructure>(pvField);
}
messagePrefix = "did not find a scalar field ";
return false;
}
@@ -168,24 +126,6 @@ bool PvaClientData::isValueScalarArray()
if(PvaClient::getDebug()) cout << "PvaClientData::isValueScalarArray\n";
if(!pvValue) return false;
if(pvValue->getField()->getType()==scalarArray) return true;
if(pvValue->getField()->getType()!=epics::pvData::structure) return false;
PVStructurePtr pvStructure = static_pointer_cast<PVStructure>(pvValue);
while(true) {
if(!pvStructure) break;
const PVFieldPtrArray fieldPtrArray(pvStructure->getPVFields());
if(fieldPtrArray.size()<1) {
throw std::logic_error("PvaClientData::isValueScalar() found empty structure");
}
PVFieldPtr pvField(fieldPtrArray[0]);
if(!pvField) throw std::logic_error("PvaClientData::isValueScalar() found null field");
if(pvField->getField()->getType()==scalarArray) {
pvValue = pvField;
return true;
}
if(pvField->getField()->getType()!=epics::pvData::structure) break;
PVStructurePtr pvStructure = static_pointer_cast<PVStructure>(pvField);
}
messagePrefix = "did not find a scalarArray field";
return false;
}
@@ -200,42 +140,73 @@ PVScalarPtr PvaClientData::getScalarValue()
{
if(PvaClient::getDebug()) cout << "PvaClientData::getScalarValue\n";
checkValue();
if(!isValueScalar()) throw std::runtime_error(messagePrefix + noScalar);
PVScalarPtr pv = static_pointer_cast<PVScalar>(pvValue);
if(!pv) throw std::runtime_error(messagePrefix + noScalar);
return pv;
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();
PVArrayPtr pv = pvStructure->getSubField<PVArray>("value");
if(!pv) throw std::runtime_error(messagePrefix + noArray);
return pv;
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();
if(!isValueScalarArray()) throw std::runtime_error(messagePrefix + noScalarArray);
PVScalarArrayPtr pv = static_pointer_cast<PVScalarArray>(pvValue);
if(!pv) throw std::runtime_error(messagePrefix + noScalarArray);
return pv;
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 = getScalarValue();
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::runtime_error(messagePrefix + notCompatibleScalar);
throw std::logic_error(
"PvaClientData::getDouble() did not find a numeric scalar field");
}
return convert->toDouble(pvScalar);
}
@@ -243,30 +214,119 @@ double PvaClientData::getDouble()
string PvaClientData::getString()
{
if(PvaClient::getDebug()) cout << "PvaClientData::getString\n";
PVScalarPtr pvScalar = getScalarValue();
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 = getScalarArrayValue();
if(pvScalarArray->getScalarArray()->getElementType()!=pvDouble) {
throw std::runtime_error(messagePrefix + notDoubleArray);
PVDoubleArrayPtr pvDoubleArray;
PVStructurePtr pvStructure = getPVStructure();
PVFieldPtr pvValue = pvStructure->getSubField("value");
if(pvValue) {
Type type = pvValue->getField()->getType();
if(type==scalarArray) {
PVScalarArrayPtr pvScalarArray = static_pointer_cast<PVScalarArray>(pvValue);
if(pvScalarArray->getScalarArray()->getElementType()==pvDouble) {
pvDoubleArray = static_pointer_cast<PVDoubleArray>(pvValue);
}
}
}
PVDoubleArrayPtr pv = static_pointer_cast<PVDoubleArray>(pvScalarArray);
return pv->view();
if(!pvDoubleArray) {
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) {
PVScalarArrayPtr pvScalarArray = static_pointer_cast<PVScalarArray>(pvField);
if(pvScalarArray->getScalarArray()->getElementType()==pvDouble) {
pvDoubleArray = static_pointer_cast<PVDoubleArray>(pvField);
break;
}
}
if(pvField->getField()->getType()!=epics::pvData::structure) break;
pvStructure = static_pointer_cast<PVStructure>(pvField);
}
}
if(!pvDoubleArray) {
throw std::logic_error(
"PvaClientData::getDoubleArray() did not find a scalar field");
}
return pvDoubleArray->view();
}
shared_vector<const string> PvaClientData::getStringArray()
{
if(PvaClient::getDebug()) cout << "PvaClientData::getStringArray\n";
PVScalarArrayPtr pvScalarArray = getScalarArrayValue();
if(pvScalarArray->getScalarArray()->getElementType()!=pvString) {
throw std::runtime_error(messagePrefix + notStringArray);
PVStringArrayPtr pvStringArray;
PVStructurePtr pvStructure = getPVStructure();
PVFieldPtr pvValue = pvStructure->getSubField("value");
if(pvValue) {
Type type = pvValue->getField()->getType();
if(type==scalarArray) {
PVScalarArrayPtr pvScalarArray = static_pointer_cast<PVScalarArray>(pvValue);
if(pvScalarArray->getScalarArray()->getElementType()==pvString) {
pvStringArray = static_pointer_cast<PVStringArray>(pvValue);
}
}
}
PVStringArrayPtr pv = static_pointer_cast<PVStringArray>(pvScalarArray);
return pv->view();
if(!pvStringArray) {
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) {
PVScalarArrayPtr pvScalarArray = static_pointer_cast<PVScalarArray>(pvField);
if(pvScalarArray->getScalarArray()->getElementType()==pvString) {
pvStringArray = static_pointer_cast<PVStringArray>(pvField);
break;
}
}
if(pvField->getField()->getType()!=epics::pvData::structure) break;
pvStructure = static_pointer_cast<PVStructure>(pvField);
}
}
if(!pvStringArray) {
throw std::logic_error(
"PvaClientData::getStringArray() did not find a scalar field");
}
return pvStringArray->view();
}