ATEST-79:

- implementing first draft of timerange and pulserange queries
- adding tests, again based on an embedded local cassandra instance

src/main/java/ch/psi/daq/rest/DaqRestController.java

@@ -0,0 +1,80 @@
+package ch.psi.daq.rest;
+
+import java.io.IOException;
+import java.util.Map;
+import java.util.stream.Stream;
+
+import javax.servlet.http.HttpServletResponse;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import ch.psi.daq.domain.cassandra.DataEvent;
+import ch.psi.daq.hazelcast.common.query.processor.QueryProcessor;
+import ch.psi.daq.rest.queries.AbstractQuery;
+import ch.psi.daq.rest.queries.PulseRangeQuery;
+import ch.psi.daq.rest.queries.TimeRangeQuery;
+
+@RestController
+public class DaqRestController {
+
+   private static final Logger logger = LoggerFactory.getLogger(DaqRestController.class);
+
+   @Autowired
+   private ResponseStreamWriter responseStreamWriter;
+
+   // TODO: just a dummy test implementation - remove when the real processor is ready
+   @Autowired
+   private QueryProcessor queryProcessor;
+
+   /**
+    * 
+    * @param query
+    * @param res
+    * @throws IOException
+    */
+   @RequestMapping(value = "/pulserange")
+   public void pulseRange(@RequestBody PulseRangeQuery query, HttpServletResponse res) throws IOException {
+
+      logger.debug("PulseRangeQuery received: {}", query);
+
+      executeQuery(query, res);
+   }
+
+   
+   /**
+    * 
+    * @param query
+    * @param res
+    * @throws IOException
+    */
+   @RequestMapping(value = "/timerange")
+   public void pulseRange(@RequestBody TimeRangeQuery query, HttpServletResponse res) throws IOException {
+      
+      logger.debug("TimeRangeQuery received: {}", query);
+      
+      executeQuery(query, res);
+   }
+
+   /**
+    * 
+    * @param query
+    * @param res
+    * @throws IOException
+    */
+   private void executeQuery(AbstractQuery query, HttpServletResponse res) throws IOException {
+      // all the magic happens here
+      Map<String, Stream<? extends DataEvent>> process = queryProcessor.process(query);
+
+      Stream<DataEvent> flatStreams = process.values().stream().flatMap(s -> {
+         return s;
+      });
+
+      // write the response back to the client using java 8 streams
+      responseStreamWriter.respond(flatStreams, query, res);
+   }
+}