Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.databoard / src / org / simantics / databoard / binding / reflection / ConstantBinding.java

diff --git a/bundles/org.simantics.databoard/src/org/simantics/databoard/binding/reflection/ConstantBinding.java b/bundles/org.simantics.databoard/src/org/simantics/databoard/binding/reflection/ConstantBinding.java
new file mode 100644 (file)
index 0000000..d3ba7a7
--- /dev/null
+++ b/bundles/org.simantics.databoard/src/org/simantics/databoard/binding/reflection/ConstantBinding.java
@@ -0,0 +1,75 @@
+/*******************************************************************************\r
+ *  Copyright (c) 2010 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.databoard.binding.reflection;\r
+\r
+import org.simantics.databoard.binding.Binding;\r
+import org.simantics.databoard.binding.RecordBinding;\r
+import org.simantics.databoard.binding.error.BindingException;\r
+import org.simantics.databoard.type.Datatype;\r
+\r
+public class ConstantBinding extends RecordBinding {\r
+\r
+    Object value;\r
+    \r
+    public ConstantBinding(Datatype type, Object constantValue) {\r
+        this.type = type;\r
+        this.componentBindings = new Binding[0];\r
+        this.value = constantValue;\r
+    }\r
+\r
+    @Override\r
+    public Object create(Object... value) throws BindingException {\r
+        return this.value;\r
+    }\r
+\r
+    @Override\r
+    public Object getComponent(Object obj, int index) throws BindingException {\r
+        throw new BindingException();\r
+    }\r
+\r
+    @Override\r
+    public Object createPartial() throws BindingException {\r
+        return value;\r
+    }\r
+\r
+    @Override\r
+    public void setComponents(Object obj, Object... value) throws BindingException {\r
+//        throw new BindingException();\r
+    }\r
+    \r
+    @Override\r
+    public void setComponent(Object obj, int index, Object value)\r
+               throws BindingException {\r
+//        throw new BindingException();\r
+    }\r
+\r
+    @Override\r
+    public boolean isInstance(Object obj) {\r
+        return obj==value;\r
+    }\r
+    \r
+       @Override\r
+       public boolean isImmutable() {\r
+               return true;\r
+       }\r
+       \r
+       @Override\r
+       protected boolean baseEquals( Object obj ) {\r
+           return super.baseEquals( obj ) && value == ((ConstantBinding)obj).value;\r
+       }\r
+       \r
+       @Override\r
+       public int baseHashCode() {\r
+           return super.baseHashCode() + 7 * value.hashCode(); \r
+       }    \r
+}\r
+\r