MethodKey.java

/*
 * ====================================================================
 * 
 * The ObjectStyle Group Software License, Version 1.0
 * 
 * Copyright (c) 2006 The ObjectStyle Group and individual authors of the
 * software. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
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 * 1. Redistributions of source code must retain the above copyright notice,
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 * 3. The end-user documentation included with the redistribution, if any, must
 * include the following acknowlegement: "This product includes software
 * developed by the ObjectStyle Group (http://objectstyle.org/)." Alternately,
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package org.objectstyle.wolips.eomodeler.core.kvc;

import java.lang.reflect.Method;

public class MethodKey implements IKey {
	private Method myMethod;

	public MethodKey(Method _method) {
		myMethod = _method;
	}

	public Class getType(Object _instance) {
		return myMethod.getReturnType();
	}

	public Object getValue(Object _instance) {
		try {
			return myMethod.invoke(_instance, (Object[]) null);
		} catch (Throwable t) {
			throw new RuntimeException("Failed to get value from method " + myMethod + " on  " + _instance + ".", t);
		}
	}

	public void setValue(Object _instance, Object _value) {
		try {
			myMethod.invoke(_instance, new Object[] { _value });
		} catch (Throwable t) {
			throw new RuntimeException("Failed to set value with method " + myMethod + " on  " + _instance + ".", t);
		}
	}

}