com.liferay.portal.kernel.util.MethodTargetClassKey Maven / Gradle / Ivy

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Contains interfaces for the portal services. Interfaces are only loaded by the global class loader and are shared by all plugins.

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/**
 * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.portal.kernel.util;

import java.lang.reflect.Method;

/**
 * @author Shuyang Zhou
 * @author Brian Wing Shun Chan
 */
public class MethodTargetClassKey {

	public MethodTargetClassKey(Method method, Class targetClass) {
		_method = method;
		_targetClass = targetClass;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj) {
			return true;
		}

		if (!(obj instanceof MethodTargetClassKey)) {
			return false;
		}

		MethodTargetClassKey methodTargetClassKey = (MethodTargetClassKey)obj;

		if ((_targetClass == methodTargetClassKey._targetClass) &&
			Validator.equals(_method, methodTargetClassKey._method)) {

			return true;
		}

		return false;
	}

	public Method getMethod() {
		return _method;
	}

	public Class getTargetClass() {
		return _targetClass;
	}

	public Method getTargetMethod() {
		if ((_targetMethod == null) && (_targetClass != null)) {
			try {
				_targetMethod = _targetClass.getDeclaredMethod(
					_method.getName(), _method.getParameterTypes());
			}
			catch (Throwable t) {
			}
		}

		return _targetMethod;
	}

	@Override
	public int hashCode() {
		if (_hashCode == 0) {
			int hashCode = 77;

			if (_method != null) {
				hashCode += _method.hashCode();
			}

			hashCode = 11 * hashCode;

			if (_targetClass != null) {
				String targetClassName = _targetClass.getName();

				hashCode += targetClassName.hashCode();
			}

			_hashCode = hashCode;
		}

		return _hashCode;
	}

	@Override
	public String toString() {
		if (_toString != null) {
			return _toString;
		}

		Class[] parameterTypes = _method.getParameterTypes();

		StringBundler sb = new StringBundler(parameterTypes.length * 2 + 6);

		sb.append(_method.getDeclaringClass().getName());
		sb.append(StringPool.PERIOD);
		sb.append(_method.getName());
		sb.append(StringPool.OPEN_PARENTHESIS);

		for (int i = 0; i < parameterTypes.length; i++) {
			sb.append(parameterTypes[i].getName());

			if ((i + 1) < parameterTypes.length) {
				sb.append(StringPool.COMMA);
			}
		}

		sb.append(StringPool.CLOSE_PARENTHESIS);

		if (_targetClass != null) {
			sb.append(StringPool.AT);
			sb.append(_targetClass.getName());
		}

		_toString = sb.toString();

		return _toString;
	}

	private int _hashCode;
	private Method _method;
	private Class _targetClass;
	private Method _targetMethod;
	private String _toString;

}