examples/org/simantics/history/examples/CollectorExample2.java

   1 package org.simantics.history.examples;
   2
   3 import java.util.UUID;
   4
   5 import org.simantics.databoard.Bindings;
   6 import org.simantics.databoard.Datatypes;
   7 import org.simantics.databoard.accessor.StreamAccessor;
   8 import org.simantics.databoard.accessor.error.AccessorException;
   9 import org.simantics.databoard.binding.RecordBinding;
  10 import org.simantics.databoard.binding.error.BindingException;
  11 import org.simantics.databoard.type.RecordType;
  12 import org.simantics.databoard.util.Bean;
  13 import org.simantics.history.Collector;
  14 import org.simantics.history.History;
  15 import org.simantics.history.HistoryAndCollectorItem;
  16 import org.simantics.history.HistoryException;
  17 import org.simantics.history.HistoryItem;
  18 import org.simantics.history.HistoryManager;
  19 import org.simantics.history.impl.FlushPolicy;
  20
  21 public class CollectorExample2 {
  22
  23         public static void main(String[] args) throws HistoryException, BindingException, AccessorException {
  24
  25                 /// Example2: Record variable "MyVariable" to two history
  26                 ///           items "MyVariable-interval=0.5" and "MyVariable-deadband=5"
  27
  28                 // Create History Manager
  29                 HistoryManager history = History.createMemoryHistory();
  30
  31                 // Create a sample format
  32                 RecordType sampleFormat = new RecordType();
  33                 sampleFormat.addComponent("time", Datatypes.DOUBLE );
  34                 sampleFormat.addComponent("value", Datatypes.DOUBLE );
  35                 sampleFormat.addComponent("quality", Datatypes.BYTE );
  36
  37                 // Create two History Item and Collector Item configurations
  38                 HistoryAndCollectorItem i1 = new HistoryAndCollectorItem();
  39                 i1.id = "MyVariable-interval=0.5";
  40                 i1.format = sampleFormat;
  41                 i1.interval = 0.5;
  42                 i1.variableId = "MyVariable";
  43
  44                 HistoryAndCollectorItem i2 = new HistoryAndCollectorItem();
  45                 i2.id = "MyVariable-deadband=5";
  46                 i2.format = sampleFormat;
  47                 i2.deadband = 5.0;
  48                 i2.variableId = "MyVariable";
  49
  50                 // Create the item in the history
  51                 history.create( i1, i2 );
  52
  53                 /// Prepare Collector
  54                 Collector collector = History.createCollector(history, FlushPolicy.NoFlush);
  55
  56                 // Initialize Collector (Items)
  57                 collector.addItem( i1 );
  58                 collector.addItem( i2 );
  59
  60                 try {
  61                         // Simulate 100 steps
  62                         for ( int i = 0; i<100; i++ ) {
  63
  64                                 // Our "simulation" results
  65                                 double time = i * 0.1;
  66                                 double myItemValue = -20 + i*0.1;
  67
  68                                 // Begin collector writing step
  69                                 collector.beginStep(Bindings.DOUBLE, time);
  70
  71                                 // Enter values for one variable.
  72                                 collector.setValue("MyVariable", Bindings.DOUBLE, myItemValue);
  73
  74                                 // End collector step - MyVariable is written to two HistoryItems
  75                                 collector.endStep();
  76                         }
  77
  78                 } finally {
  79                         // Flush values
  80                         collector.flush();
  81                         collector.close();
  82                 }
  83
  84         }
  85
  86 }