X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.charts%2Fsrc%2Forg%2Fsimantics%2Fcharts%2FCharts.java;fp=bundles%2Forg.simantics.charts%2Fsrc%2Forg%2Fsimantics%2Fcharts%2FCharts.java;h=69aea11ee2773f0ea4ed3f93fefdab99b2f74ced;hp=0000000000000000000000000000000000000000;hb=969bd23cab98a79ca9101af33334000879fb60c5;hpb=866dba5cd5a3929bbeae85991796acb212338a08

diff --git a/bundles/org.simantics.charts/src/org/simantics/charts/Charts.java b/bundles/org.simantics.charts/src/org/simantics/charts/Charts.java
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index 000000000..69aea11ee
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+++ b/bundles/org.simantics.charts/src/org/simantics/charts/Charts.java
@@ -0,0 +1,77 @@
+package org.simantics.charts;
+
+import java.util.Collections;
+import java.util.List;
+
+import org.simantics.Simantics;
+import org.simantics.charts.editor.ChartData;
+import org.simantics.charts.editor.ChartKeys;
+import org.simantics.databoard.binding.error.BindingException;
+import org.simantics.databoard.util.Bean;
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.layer0.request.PossibleModel;
+import org.simantics.history.HistoryException;
+import org.simantics.history.HistorySamplerItem;
+import org.simantics.history.ItemManager;
+import org.simantics.history.util.subscription.SamplingFormat;
+import org.simantics.modeling.subscription.SubscriptionItem;
+import org.simantics.modeling.subscription.SubscriptionItemQuery;
+import org.simantics.project.IProject;
+import org.simantics.utils.datastructures.hints.IHintContext.Key;
+
+/**
+ * Main facade for externally dealing with the trending system.
+ * 
+ * @author Tuukka Lehtonen
+ * @author Antti Villberg
+ * 
+ */
+public final class Charts {
+
+    public static void resetChartEditorData(IProject project, Resource model, ChartData editorData) {
+        if (editorData != null) {
+            project.setHint(ChartKeys.chartSourceKey(model), editorData);
+        } else {
+            project.removeHint(ChartKeys.chartSourceKey(model));
+        }
+    }
+
+	public static HistorySamplerItem createHistorySamplerItem(ReadGraph graph, Resource subscriptionItem) throws DatabaseException {
+		
+		try {
+
+			Resource model = graph.syncRequest(new PossibleModel(subscriptionItem));
+			if ( model == null ) {
+				throw new DatabaseException("There is no model for " + subscriptionItem);
+			}
+
+			Key chartDataKey = ChartKeys.chartSourceKey(model);
+
+			final ChartData data = Simantics.getProject().getHint(chartDataKey);
+			if ( data == null ) {
+				throw new DatabaseException("There is no chart data for " + model);
+			}
+
+			ItemManager im = new ItemManager( data.history.getItems() );
+
+			SubscriptionItem i = graph.syncRequest(new SubscriptionItemQuery(subscriptionItem));
+
+			List<Bean> items = im.search("variableId", i.variableId);
+			Collections.sort(items, SamplingFormat.INTERVAL_COMPARATOR);
+			if (items.isEmpty()) new DatabaseException("There is history item for " + i.variableId);
+			Bean config = items.get(0);
+			String historyId = (String) config.getFieldUnchecked("id");
+
+			return new HistorySamplerItem(data.collector, data.history, historyId, System.identityHashCode(data));
+
+		} catch (HistoryException e) {
+			throw new DatabaseException(e);
+		} catch (BindingException e) {
+			throw new DatabaseException(e);
+		}
+    	
+	}
+
+}