Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.modeling.ui / src / org / simantics / modeling / ui / modelBrowser2 / contributions / RelationView.java

diff --git a/bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/modelBrowser2/contributions/RelationView.java b/bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/modelBrowser2/contributions/RelationView.java
new file mode 100644 (file)
index 0000000..179d0be
--- /dev/null
+++ b/bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/modelBrowser2/contributions/RelationView.java
@@ -0,0 +1,116 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.modeling.ui.modelBrowser2.contributions;\r
+\r
+import java.util.Collection;\r
+import java.util.Map;\r
+import java.util.function.Consumer;\r
+\r
+import org.simantics.Simantics;\r
+import org.simantics.browsing.ui.BuiltinKeys;\r
+import org.simantics.browsing.ui.NodeContext;\r
+import org.simantics.browsing.ui.Tester;\r
+import org.simantics.browsing.ui.graph.contributor.viewpoint.ContextInputCallbackViewpointContributor;\r
+import org.simantics.browsing.ui.graph.tester.GraphTesters;\r
+import org.simantics.databoard.Bindings;\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.RequestProcessor;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.Session;\r
+import org.simantics.db.common.primitiverequest.Adapter;\r
+import org.simantics.db.common.request.Queries;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.layer0.adapter.GenericRelationIndex;\r
+import org.simantics.db.request.Read;\r
+import org.simantics.layer0.Layer0;\r
+import org.simantics.modeling.ui.modelBrowser2.model.RelationViewNode;\r
+import org.simantics.operation.Layer0X;\r
+\r
+public class RelationView extends ContextInputCallbackViewpointContributor {\r
+\r
+    public RelationView() {\r
+        super(RelationViewNode.class);\r
+    }\r
+\r
+    @Override\r
+    public Tester getNodeContextTester() {\r
+        return GraphTesters.type(Layer0X.URIs.RelationView);\r
+    }\r
+\r
+    @Override\r
+    public String getViewpointId() {\r
+        return "Standard";\r
+    }\r
+\r
+    @Override\r
+    protected void finalize() throws Throwable {\r
+        //System.out.println("**** FINALIZING RelationView " + this);\r
+        super.finalize();\r
+    }\r
+\r
+    @Override\r
+    public void getContribution(ReadGraph graph, final NodeContext context, final Consumer<Collection<?>> callback) throws DatabaseException {\r
+\r
+        final Session session = graph.getSession();\r
+\r
+        RelationViewNode model = (RelationViewNode)context.getConstant(BuiltinKeys.INPUT);\r
+        final Resource view = model.resource;\r
+\r
+        final String filter = context.getConstant(BuiltinKeys.FILTER);\r
+        Layer0 l0 = Layer0.getInstance(graph);\r
+        Layer0X L0X = Layer0X.getInstance(graph);\r
+\r
+        final Resource input = graph.getPossibleObject(view, l0.PartOf);\r
+        final Resource relation = graph.getPossibleObject(view, L0X.AppliesRelation);\r
+        final String bindingPattern = graph.getPossibleRelatedValue(view, L0X.HasBindingPattern, Bindings.STRING);\r
+\r
+        final GenericRelationIndex index = graph.syncRequest(new org.simantics.db.common.primitiverequest.Adapter<GenericRelationIndex>(relation, GenericRelationIndex.class));\r
+\r
+        // TODO: use DB ExternalRead instead of this listener hack which proliferates the index with listeners.\r
+\r
+        index.addListener(session, input, new Runnable() {\r
+            @Override\r
+            public void run() {\r
+                Simantics.async(new Runnable() {\r
+                    @Override\r
+                    public void run() {\r
+                        try {\r
+                            callback.accept(compute(session, filter, bindingPattern, view, relation, input));\r
+                        } catch (DatabaseException e) {\r
+                            e.printStackTrace();\r
+                        }\r
+                    }\r
+                });\r
+            }\r
+        });\r
+\r
+        callback.accept(compute(graph, filter, bindingPattern, view, relation, input));\r
+\r
+    }\r
+\r
+    Collection<?> compute(RequestProcessor processor, String filter, String bindingPattern, final Resource view, Resource relation, Resource input) throws DatabaseException {\r
+        if (filter == null)\r
+            filter = "";\r
+\r
+        GenericRelationIndex index = processor.syncRequest(new Adapter<GenericRelationIndex>(relation, GenericRelationIndex.class));\r
+        final Collection<Map<String, Object>> results = index.query(processor, filter, bindingPattern, new Object[] { input }, 1000);\r
+\r
+        return processor.syncRequest(new Read<Collection<?>>() {\r
+            @Override\r
+            public Collection<?> perform(ReadGraph graph) throws DatabaseException {\r
+                RelationViewContributor contrib = graph.syncRequest(Queries.adapt(view, RelationViewContributor.class));\r
+                return contrib.getContribution(graph, results);\r
+            }\r
+        });\r
+    }\r
+\r
+}\r