Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.modeling / src / org / simantics / modeling / adapters / ConnectionRelationRemover.java

diff --git a/bundles/org.simantics.modeling/src/org/simantics/modeling/adapters/ConnectionRelationRemover.java b/bundles/org.simantics.modeling/src/org/simantics/modeling/adapters/ConnectionRelationRemover.java
new file mode 100644 (file)
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--- /dev/null
+++ b/bundles/org.simantics.modeling/src/org/simantics/modeling/adapters/ConnectionRelationRemover.java
@@ -0,0 +1,95 @@
+/*******************************************************************************\r
+ * Copyright (c) 2012 Association for Decentralized Information Management in\r
+ * 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.adapters;\r
+\r
+import java.util.Collection;\r
+import java.util.Map;\r
+\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.WriteGraph;\r
+import org.simantics.db.common.utils.OrderedSetUtils;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.layer0.adapter.impl.AbstractRemover;\r
+import org.simantics.db.layer0.util.RemoverUtil;\r
+import org.simantics.diagram.stubs.DiagramResource;\r
+import org.simantics.layer0.Layer0;\r
+import org.simantics.modeling.ModelingResources;\r
+import org.simantics.modeling.adapters.Removers.ValidationResult;\r
+\r
+/**\r
+ * @author Tuukka Lehtonen\r
+ * @see TerminalRemover\r
+ */\r
+public class ConnectionRelationRemover extends AbstractRemover {\r
+\r
+    public ConnectionRelationRemover(Resource connectionRelation) {\r
+        super(connectionRelation);\r
+    }\r
+\r
+    @Override\r
+    public String canRemove(ReadGraph graph, Map<Object, Object> aux) throws DatabaseException {\r
+        ModelingResources MOD = ModelingResources.getInstance(graph);\r
+        Resource diagramConnectionRelation = null;\r
+        Resource connectionRelation = graph.getPossibleObject(resource, MOD.DiagramConnectionRelationToConnectionRelation);\r
+        if (connectionRelation != null)\r
+            diagramConnectionRelation = resource;\r
+        else\r
+            connectionRelation = resource;\r
+        ValidationResult result = Removers.validateConnectionRelationRemoval(graph, connectionRelation, diagramConnectionRelation);\r
+        if (result.inUse())\r
+            return Removers.formatError(graph, result);\r
+        return null;\r
+    }\r
+\r
+    @Override\r
+    public void remove(WriteGraph graph) throws DatabaseException {\r
+        Layer0 L0 = Layer0.getInstance(graph);\r
+        DiagramResource DIA = DiagramResource.getInstance(graph);\r
+        ModelingResources MOD = ModelingResources.getInstance(graph);\r
+\r
+        Collection<Resource> lifts = graph.getObjects(resource, DIA.Lifts);\r
+\r
+        // Not necessary, this is legacy support only.\r
+        for (Resource def : graph.getObjects(resource, L0.ConcernsRelation_Inverse))\r
+            graph.deny(def);\r
+\r
+        // Remove possible symbol terminal(s).\r
+        for (Resource diagramConnectionRelation : graph.getObjects(resource, MOD.ConnectionRelationToDiagramConnectionRelation)) {\r
+            removeTerminals(graph, DIA, diagramConnectionRelation);\r
+            Resource diagramConnectionRelationInverse = graph.getPossibleObject(diagramConnectionRelation, L0.InverseOf);\r
+            graph.deny(diagramConnectionRelation);\r
+            if (diagramConnectionRelationInverse != null)\r
+                graph.deny(diagramConnectionRelationInverse);\r
+        }\r
+        removeTerminals(graph, DIA, resource);\r
+\r
+        Resource connectionRelationInverse = graph.getPossibleObject(resource, L0.InverseOf);\r
+        graph.deny(resource);\r
+        if (connectionRelationInverse != null)\r
+            graph.deny(connectionRelationInverse);\r
+\r
+        if (!lifts.isEmpty())\r
+            for (Resource lift : lifts)\r
+                RemoverUtil.remove(graph, lift);\r
+    }\r
+    \r
+    private void removeTerminals(WriteGraph graph, DiagramResource DIA, Resource diagramConnectionRelation) throws DatabaseException {\r
+        for (Resource terminal : graph.getObjects(diagramConnectionRelation, DIA.HasConnectionPoint_Inverse)) {\r
+            for (Resource ownerList : OrderedSetUtils.getOwnerLists(graph, terminal, DIA.Composite)) {\r
+                OrderedSetUtils.remove(graph, ownerList, terminal);\r
+            }\r
+            RemoverUtil.remove(graph, terminal);\r
+        }\r
+    }\r
+\r
+}\r