+/*******************************************************************************\r
+ * Copyright (c) 2012, 2013 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.objmap.graph.rules.range;\r
+\r
+import java.lang.reflect.InvocationTargetException;\r
+import java.lang.reflect.Method;\r
+\r
+import org.simantics.objmap.exceptions.MappingException;\r
+\r
+\r
+/**\r
+ * Accessor for mapped value. Uses two methods:\r
+ * - Getter: returns the current value.\r
+ * - Setter: sets the current value. The value may be null. (if setter parameter is primitive, null value is not mapped).\r
+ * \r
+ * @author Marko Luukkainen <marko.luukkainen@vtt.fi>\r
+ *\r
+ * @param <T>\r
+ */\r
+public class CompoundGetSetValueAccessor<Range,T> implements IRangeAccessor<Range,T> {\r
+ \r
+ private Method getter;\r
+ private Method setter;\r
+ private boolean primitive;\r
+ \r
+ public CompoundGetSetValueAccessor(Method getter, Method setter) {\r
+ this.getter = getter;\r
+ this.setter = setter;\r
+ this.primitive = setter.getParameterTypes()[0].isPrimitive();\r
+ }\r
+ \r
+ @SuppressWarnings("unchecked")\r
+ public T get(Range element) throws MappingException {\r
+ try {\r
+ return (T) getter.invoke(element);\r
+ } catch (IllegalArgumentException e) {\r
+ throw new MappingException(e);\r
+ } catch (IllegalAccessException e) {\r
+ throw new MappingException(e);\r
+ } catch (InvocationTargetException e) {\r
+ throw new MappingException(e);\r
+ }\r
+ };\r
+\r
+ @Override\r
+ public boolean set(Range element, T value)\r
+ throws MappingException {\r
+ if (value == null && primitive)\r
+ return false;\r
+ if (equal(get(element),value))\r
+ return false;\r
+ try {\r
+ setter.invoke(element, value);\r
+ } catch (IllegalArgumentException e) {\r
+ throw new MappingException(e);\r
+ } catch (IllegalAccessException e) {\r
+ throw new MappingException(e);\r
+ } catch (InvocationTargetException e) {\r
+ throw new MappingException(e);\r
+ }\r
+ return true;\r
+ \r
+ }\r
+ \r
+ private boolean equal(Object v1, Object v2) {\r
+ if (v1 == null) {\r
+ if (v2 == null)\r
+ return true;\r
+ return false;\r
+ } else if (v2 == null) {\r
+ return false;\r
+ }\r
+ return v1.equals(v2);\r
+ }\r
+}\r