com.liferay.portal.kernel.util.MethodHandler.java Source code

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Here is the source code for com.liferay.portal.kernel.util.MethodHandler.java

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/**
 * Copyright (c) 2000-present 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.io.Serializable;

import java.lang.reflect.Method;
import java.lang.reflect.Modifier;

import java.util.Arrays;

/**
 * @author Shuyang Zhou
 */
public class MethodHandler implements Serializable {

    public MethodHandler(Method method, Object... arguments) {
        this(new MethodKey(method), arguments);
    }

    public MethodHandler(MethodKey methodKey, Object... arguments) {
        _methodKey = methodKey;
        _arguments = arguments;
    }

    public Object[] getArguments() {
        Object[] arguments = new Object[_arguments.length];

        System.arraycopy(_arguments, 0, arguments, 0, _arguments.length);

        return arguments;
    }

    public MethodKey getMethodKey() {
        return _methodKey;
    }

    public Object invoke() throws Exception {
        Method method = _methodKey.getMethod();

        Object targetObject = null;

        if (!Modifier.isStatic(method.getModifiers())) {
            Class<?> targetClass = _methodKey.getDeclaringClass();

            targetObject = targetClass.newInstance();
        }

        return method.invoke(targetObject, _arguments);
    }

    public Object invoke(Object target) throws Exception {
        Method method = _methodKey.getMethod();

        return method.invoke(target, _arguments);
    }

    @Override
    public String toString() {
        StringBundler sb = new StringBundler(5);

        sb.append("{arguments=");
        sb.append(Arrays.toString(_arguments));
        sb.append(", methodKey=");
        sb.append(_methodKey);
        sb.append("}");

        return sb.toString();
    }

    private final Object[] _arguments;
    private final MethodKey _methodKey;

}