Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.browsing.ui.graph.impl / src / org / simantics / browsing / ui / graph / impl / GraphEnumerationModifier.java

diff --git a/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/GraphEnumerationModifier.java b/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/GraphEnumerationModifier.java
new file mode 100644 (file)
index 0000000..0d87150
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+++ b/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/GraphEnumerationModifier.java
@@ -0,0 +1,79 @@
+/*******************************************************************************\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.browsing.ui.graph.impl;\r
+\r
+import java.util.Collection;\r
+\r
+import org.simantics.browsing.ui.common.modifiers.EnumeratedValue;\r
+import org.simantics.browsing.ui.common.modifiers.Enumeration;\r
+import org.simantics.databoard.Bindings;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.Session;\r
+import org.simantics.db.WriteGraph;\r
+import org.simantics.db.common.utils.NameUtils;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.exception.ValidationException;\r
+import org.simantics.layer0.Layer0;\r
+\r
+/**\r
+ * A graph resource based EnumerationModifier utility implementation.\r
+ * \r
+ * @author Tuukka Lehtonen\r
+ */\r
+public class GraphEnumerationModifier extends GraphEnumerationModifierBase<Resource> {\r
+\r
+    protected final Resource subject;\r
+    protected final Resource relation;\r
+\r
+    public GraphEnumerationModifier(Session session, Resource subject, Resource relation, Enumeration<Resource> enumeration, Resource value) {\r
+        this(session, subject, relation, enumeration, enumeration.find(value));\r
+    }\r
+\r
+    public GraphEnumerationModifier(Session session, Resource subject, Resource relation, Enumeration<Resource> enumeration, EnumeratedValue<Resource> value) {\r
+        super(session, enumeration, value);\r
+        if (subject == null)\r
+            throw new NullPointerException("null subject");\r
+        if (relation== null)\r
+            throw new NullPointerException("null relation");\r
+\r
+        this.subject = subject;\r
+        this.relation = relation;\r
+    }\r
+\r
+    @Override\r
+    protected void modifyWithObject(WriteGraph graph, Resource oldEnumObject, Resource enumObject) throws DatabaseException {\r
+//      System.out.println("subject: " + NameUtils.getSafeName(graph, subject));\r
+//      System.out.println("relation: " + NameUtils.getSafeName(graph, relation));\r
+//      System.out.println("old enum object: " + NameUtils.getSafeName(graph, oldEnumObject));\r
+//      System.out.println("enum object: " + NameUtils.getSafeName(graph, enumObject));\r
+\r
+        // FIXME: this is a hackish way to support enumeration style editing for boolean values.\r
+        // See GetEnumeration for why this works.\r
+        Layer0 l0 = Layer0.getInstance(graph);\r
+        if (l0.True.equals(enumObject) || l0.False.equals(enumObject)) {\r
+            Boolean value = Boolean.valueOf(l0.True.equals(enumObject));\r
+            // NOTE: this assumes that relation is functional, otherwise it will fail.\r
+            Collection<Resource> props = graph.getObjects(subject, relation);\r
+            if (props.size() > 1) {\r
+                throw new ValidationException("Multiple (" + props.size() + ") '" + NameUtils.getSafeName(graph, relation) + "' properties found for resource '" + NameUtils.getSafeName(graph, subject) + "'. Expected functional property.");\r
+            }\r
+            graph.claimLiteral(subject, relation, value, Bindings.BOOLEAN);\r
+        } else {\r
+            if (oldEnumObject != null)\r
+                //graph.deny(subject, relation, oldEnumObject);\r
+                graph.deny(subject, relation);\r
+            if (enumObject != null)\r
+                graph.claim(subject, relation, null, enumObject);\r
+        }\r
+    }\r
+\r
+}\r