Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.objmap2 / src / org / simantics / objmap / graph / rules / range / FieldAccessorWithDefault.java

diff --git a/bundles/org.simantics.objmap2/src/org/simantics/objmap/graph/rules/range/FieldAccessorWithDefault.java b/bundles/org.simantics.objmap2/src/org/simantics/objmap/graph/rules/range/FieldAccessorWithDefault.java
new file mode 100644 (file)
index 0000000..dea8cf3
--- /dev/null
+++ b/bundles/org.simantics.objmap2/src/org/simantics/objmap/graph/rules/range/FieldAccessorWithDefault.java
@@ -0,0 +1,40 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2013 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.objmap.graph.rules.range;\r
+\r
+import java.lang.reflect.Field;\r
+\r
+import org.simantics.objmap.exceptions.MappingException;\r
+\r
+\r
+/**\r
+ * Accesses the given field of the element.\r
+ * @author Hannu Niemist�\r
+ */\r
+public class FieldAccessorWithDefault<Range,T> extends FieldAccessor<Range,T> {\r
+    \r
+       T defaultValue;\r
+\r
+       public FieldAccessorWithDefault(Field field, T defaultValue) {\r
+        super(field);\r
+        this.defaultValue = defaultValue;\r
+    }\r
+\r
+    @Override\r
+       public T get(Range element) throws MappingException {\r
+               T value = super.get(element);\r
+               if(value == null)\r
+                   return defaultValue;\r
+               else\r
+                   return value;\r
+       }\r
+}\r