Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.browsing.ui.swt / src / org / simantics / browsing / ui / swt / widgets / StringPropertyFactory.java

diff --git a/bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/widgets/StringPropertyFactory.java b/bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/widgets/StringPropertyFactory.java
new file mode 100644 (file)
index 0000000..4bc105f
--- /dev/null
+++ b/bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/widgets/StringPropertyFactory.java
@@ -0,0 +1,48 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2012 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.swt.widgets;\r
+\r
+import org.simantics.browsing.ui.swt.widgets.impl.ReadFactoryImpl;\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.utils.datastructures.Triple;\r
+\r
+/**\r
+ * @author Antti Villberg\r
+ */\r
+public class StringPropertyFactory extends ReadFactoryImpl<Resource, String> {\r
+\r
+    private final String propertyURI;\r
+    private final String defaultValue;\r
+\r
+    public StringPropertyFactory(String propertyURI) {\r
+        this(propertyURI, null);\r
+    }\r
+\r
+    public StringPropertyFactory(String propertyURI, String defaultValue) {\r
+        this.propertyURI = propertyURI;\r
+        this.defaultValue = defaultValue;\r
+    }\r
+\r
+    @Override\r
+    public Object getIdentity(Object inputContents) {\r
+        return new Triple<Resource, String, Object>((Resource) inputContents, propertyURI, getClass());\r
+    }\r
+\r
+    @Override\r
+    public String perform(ReadGraph graph, Resource resource) throws DatabaseException {\r
+        String value = graph.getPossibleRelatedValue(resource, graph.getResource(propertyURI));\r
+        return value != null ? value : defaultValue;\r
+    }\r
+\r
+}\r