org.eclipse.xwt/src/org/eclipse/xwt/javabean/metadata/properties/DynamicProperty.java

/*******************************************************************************
 * Copyright (c) 2006, 2010 Soyatec (http://www.soyatec.com) and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     Soyatec - initial API and implementation
 *******************************************************************************/
package org.eclipse.xwt.javabean.metadata.properties;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

import org.eclipse.xwt.internal.utils.ObjectUtil;
import org.eclipse.xwt.metadata.ILoadingType;
import org.eclipse.xwt.metadata.IProperty;

/**
 * This class is used to extend the Java Bean model
 * 
 * @author yyang (yves.yang@soyatec.com)
 */
public class DynamicProperty extends AbstractProperty {

	private final Method setter;
	private final Method getter;

	public DynamicProperty(Class<?> type, Class<?> propertyType, String name) {
		this(propertyType, createSetter0(type, propertyType, name), createGetter0(propertyType, name), name);
	}

	public DynamicProperty(Class<?> type, Class<?> propertyType, String name, ILoadingType loadingType) {
		this(propertyType, createSetter0(type, propertyType, name), createGetter0(propertyType, name), name, loadingType);
	}

	public DynamicProperty(Class<?> propertyType, Method setter, Method getter, String name) {
		this(propertyType, setter, getter, name, ILoadingType.DEFAULT);
	}

	public DynamicProperty(Class<?> propertyType, Method setter, Method getter, String name, ILoadingType loadingType) {
		super(name, propertyType, loadingType);
		this.setter = setter;
		this.getter = getter;
	}

	public void setValue(Object target, Object value) throws IllegalArgumentException, IllegalAccessException, InvocationTargetException, SecurityException, NoSuchFieldException {
		setter.invoke(target, value);
		fireSetPostAction(target, this, value);
	}

	public Object getValue(Object target) throws IllegalArgumentException, IllegalAccessException, InvocationTargetException, SecurityException, NoSuchFieldException {
		return getter.invoke(target, null);
	}

	protected static Method createSetter0(Class<?> type, Class<?> propertyType, String name) {
		try {
			return createSetter(type, propertyType, name);
		} catch (Exception e) {
		}
		return null;
	}

	@Override
	public boolean isReadOnly() {
		return this.setter == null;
	}
	
	public static Method createSetter(Class<?> type, Class<?> propertyType, String name) throws SecurityException, NoSuchMethodException {
		return type.getMethod("set" + Character.toUpperCase(name.charAt(0)) + name.substring(1), propertyType);
	}

	protected static Method createGetter0(Class<?> type, String name) {
		try {
			return createGetter(type, name);
		} catch (Exception e) {
		}
		return null;
	}

	public static Method createGetter(Class<?> type, String name) throws SecurityException, NoSuchMethodException {
		return ObjectUtil.findGetter(type, name, null);
	}
}