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

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