/*
 * JBoss, Home of Professional Open Source
 * Copyright 2008, Red Hat, Inc., and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jboss.weld.module.web.util.el;

import javax.el.ELContext;
import javax.el.MethodExpression;
import javax.el.MethodInfo;

/**
 * @author pmuir
 * @author mluksa
 */
public abstract class ForwardingMethodExpression extends MethodExpression {

    private static final long serialVersionUID = -2614033937482335044L;

    protected abstract MethodExpression delegate();

    @Override
    public MethodInfo getMethodInfo(ELContext context) {
        return delegate().getMethodInfo(context);
    }

    @Override
    public Object invoke(ELContext context, Object[] params) {
        return delegate().invoke(context, params);
    }

    @Override
    public String getExpressionString() {
        return delegate().getExpressionString();
    }

    @Override
    public boolean isLiteralText() {
        return delegate().isLiteralText();
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == null) {
            return false;
        }
        if (obj == this) {
            return true;
        }
        if (obj instanceof ForwardingMethodExpression) {
            MethodExpression delegate = ((ForwardingMethodExpression) obj).delegate();
            return delegate().equals(delegate);
        }
        return false;
    }

    @Override
    public boolean isParametersProvided() {
        return delegate().isParametersProvided();
    }

    @Override
    @Deprecated
    public boolean isParmetersProvided() {
        return delegate().isParametersProvided();
    }

    @Override
    public int hashCode() {
        return delegate().hashCode();
    }

    @Override
    public String toString() {
        return delegate().toString();
    }

}