--- /dev/null
+package org.simantics.history.examples;\r
+\r
+import java.util.UUID;\r
+\r
+import org.simantics.databoard.Bindings;\r
+import org.simantics.databoard.Datatypes;\r
+import org.simantics.databoard.accessor.StreamAccessor;\r
+import org.simantics.databoard.accessor.error.AccessorException;\r
+import org.simantics.databoard.binding.RecordBinding;\r
+import org.simantics.databoard.binding.error.BindingException;\r
+import org.simantics.databoard.type.RecordType;\r
+import org.simantics.databoard.util.Bean;\r
+import org.simantics.history.Collector;\r
+import org.simantics.history.History;\r
+import org.simantics.history.HistoryAndCollectorItem;\r
+import org.simantics.history.HistoryException;\r
+import org.simantics.history.HistoryItem;\r
+import org.simantics.history.HistoryManager;\r
+import org.simantics.history.impl.FlushPolicy;\r
+\r
+public class CollectorExample1 {\r
+\r
+ public static void main(String[] args) throws HistoryException, BindingException, AccessorException {\r
+ \r
+ /// Example1: Create History Manager & Item\r
+ // Create History Manager\r
+ HistoryManager history = History.createMemoryHistory();\r
+ \r
+ // Create a sample format\r
+ RecordType sampleFormat = new RecordType();\r
+ sampleFormat.addComponent("time", Datatypes.DOUBLE );\r
+ sampleFormat.addComponent("value", Datatypes.DOUBLE );\r
+ sampleFormat.addComponent("quality", Datatypes.BYTE );\r
+ \r
+ // Create History Item configuration\r
+ String id = UUID.randomUUID().toString();\r
+ HistoryItem historyItem = new HistoryItem(id, sampleFormat);\r
+ \r
+ // Create the item in the history\r
+ history.create( historyItem );\r
+ \r
+ \r
+ \r
+ \r
+\r
+ /// Example2: Prepare Collector\r
+ Collector collector = History.createCollector(history, FlushPolicy.NoFlush);\r
+ \r
+ // Read item configuration data from history ( id and sampleFormat )\r
+ Bean hi = history.getItem( id );\r
+ \r
+ // Create collector item\r
+ HistoryAndCollectorItem ci = new HistoryAndCollectorItem();\r
+ ci.readAvailableFields( hi ); // Read: id, sampleFormat\r
+ ci.interval = 0.5;\r
+ //ci.deadband = 10;\r
+ ci.enabled = true;\r
+ ci.gain = 10.0;\r
+ ci.variableId = "MyItem";\r
+ \r
+ // Initialize Collector (Item)\r
+ collector.addItem( ci );\r
+ \r
+ try {\r
+ // Simulate 100 steps\r
+ for ( int i = 0; i<100; i++ ) {\r
+ \r
+ // Our "simulation" results \r
+ double time = i * 0.1;\r
+ double myItemValue = -20 + i*0.1;\r
+ \r
+ // Begin collector writing step\r
+ collector.beginStep(Bindings.DOUBLE, time);\r
+ \r
+ // Enter values \r
+ collector.setValue("MyItem", Bindings.DOUBLE, myItemValue);\r
+ \r
+ // End collector step\r
+ collector.endStep();\r
+ }\r
+ \r
+ } finally {\r
+ // Flush values\r
+ collector.flush();\r
+ collector.close();\r
+ }\r
+ \r
+ \r
+ \r
+ /// Print results\r
+ // Open stream from history\r
+ StreamAccessor aa = history.openStream(id, "r");\r
+ // Read sample type\r
+ RecordType sampleType = (RecordType) aa.type().componentType;\r
+ // Create bean binding\r
+ RecordBinding sampleBinding = (RecordBinding) Bindings.getBeanBinding( sampleType );\r
+ // Create sample object\r
+ Bean sample = (Bean) sampleBinding.createPartial();\r
+ \r
+ try {\r
+ for (int i=0; i<aa.size(); i++) {\r
+ aa.get(i, sampleBinding, sample);\r
+ System.out.println(i+": "+sample);\r
+ }\r
+ } finally {\r
+ aa.close();\r
+ }\r
+ \r
+ }\r
+ \r
+}\r