src/main/java/org/apache/commons/proxy/factory/util/MethodSignature.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.commons.proxy.factory.util;

import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.List;

/**
 * A class for capturing the signature of a method (its name and parameter types).
 *
 * @author James Carman
 * @since 1.0
 */
public class MethodSignature
{
//**********************************************************************************************************************
// Fields
//**********************************************************************************************************************

    private final String name;
    private final List parameterTypes;

//**********************************************************************************************************************
// Constructors
//**********************************************************************************************************************

    public MethodSignature( Method method )
    {
        this.name = method.getName();
        this.parameterTypes = Arrays.asList(method.getParameterTypes());
    }

//**********************************************************************************************************************
// Canonical Methods
//**********************************************************************************************************************

    public boolean equals( Object o )
    {
        if( this == o )
        {
            return true;
        }
        if( o == null || getClass() != o.getClass() )
        {
            return false;
        }
        final MethodSignature that = ( MethodSignature ) o;
        if( !name.equals(that.name) )
        {
            return false;
        }
        if( !parameterTypes.equals(that.parameterTypes) )
        {
            return false;
        }
        return true;
    }

    public int hashCode()
    {
        int result;
        result = name.hashCode();
        result = 29 * result + parameterTypes.hashCode();
        return result;
    }
}