bundles/org.simantics.charts/src/org/simantics/charts/Charts.java

   1 package org.simantics.charts;
   2
   3 import java.util.Collections;
   4 import java.util.List;
   5
   6 import org.simantics.charts.editor.ChartData;
   7 import org.simantics.charts.editor.ChartKeys;
   8 import org.simantics.databoard.binding.error.BindingException;
   9 import org.simantics.databoard.util.Bean;
  10 import org.simantics.db.ReadGraph;
  11 import org.simantics.db.Resource;
  12 import org.simantics.db.common.request.PossibleIndexRoot;
  13 import org.simantics.db.exception.DatabaseException;
  14 import org.simantics.db.layer0.variable.Variable;
  15 import org.simantics.history.HistoryException;
  16 import org.simantics.history.HistorySamplerItem;
  17 import org.simantics.history.ItemManager;
  18 import org.simantics.history.util.subscription.SamplingFormat;
  19 import org.simantics.modeling.subscription.SubscriptionItem;
  20 import org.simantics.modeling.subscription.SubscriptionItemQuery;
  21 import org.simantics.project.IProject;
  22 import org.simantics.simulation.experiment.IExperiment;
  23
  24 /**
  25  * Main facade for externally dealing with the trending system.
  26  *
  27  * @author Tuukka Lehtonen
  28  * @author Antti Villberg
  29  *
  30  */
  31 public final class Charts {
  32
  33     public static void resetChartEditorData(IProject project, Resource model, ChartData editorData) {
  34         if (editorData != null) {
  35             project.setHint(ChartKeys.chartSourceKey(model), editorData);
  36         } else {
  37             project.removeHint(ChartKeys.chartSourceKey(model));
  38         }
  39     }
  40
  41         public static HistorySamplerItem createHistorySamplerItem(ReadGraph graph, Variable run, Resource subscriptionItem) throws DatabaseException {
  42                         IExperiment exp = (IExperiment) run.getPropertyValue(graph, "iExperiment");
  43                         ITrendSupport support = exp.getService(ITrendSupport.class);
  44                         ChartData data = support.getChartData();
  45                         return createHistorySamplerItem(graph, subscriptionItem, data);
  46         }
  47
  48     public static HistorySamplerItem createHistorySamplerItem(ReadGraph graph, Resource subscriptionItem, ChartData data) throws DatabaseException {
  49
  50         try {
  51             Resource model = graph.syncRequest(new PossibleIndexRoot(subscriptionItem));
  52             if (model == null) {
  53                 throw new DatabaseException("There is no model for " + subscriptionItem);
  54             }
  55
  56             ItemManager im = new ItemManager(data.history.getItems());
  57
  58             SubscriptionItem i = graph.syncRequest(new SubscriptionItemQuery(subscriptionItem));
  59
  60             List<Bean> items = im.search("variableId", i.variableId);
  61             Collections.sort(items, SamplingFormat.INTERVAL_COMPARATOR);
  62             if (items.isEmpty())
  63                 new DatabaseException("There is history item for " + i.variableId);
  64             Bean config = items.get(0);
  65             String historyId = (String) config.getFieldUnchecked("id");
  66
  67             return new HistorySamplerItem(data.collector, data.history, historyId, System.identityHashCode(data));
  68         } catch (HistoryException e) {
  69             throw new DatabaseException(e);
  70         } catch (BindingException e) {
  71             throw new DatabaseException(e);
  72         }
  73     }
  74
  75 }