001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 018 package org.apache.commons.proxy.factory.util; 019 020 import java.lang.reflect.Method; 021 import java.util.Arrays; 022 import java.util.List; 023 024 /** 025 * A class for capturing the signature of a method (its name and parameter types). 026 * 027 * @author James Carman 028 * @since 1.0 029 */ 030 public class MethodSignature 031 { 032 //---------------------------------------------------------------------------------------------------------------------- 033 // Fields 034 //---------------------------------------------------------------------------------------------------------------------- 035 036 private final String name; 037 private final List parameterTypes; 038 039 //---------------------------------------------------------------------------------------------------------------------- 040 // Constructors 041 //---------------------------------------------------------------------------------------------------------------------- 042 043 public MethodSignature( Method method ) 044 { 045 this.name = method.getName(); 046 this.parameterTypes = Arrays.asList( method.getParameterTypes() ); 047 } 048 049 //---------------------------------------------------------------------------------------------------------------------- 050 // Canonical Methods 051 //---------------------------------------------------------------------------------------------------------------------- 052 053 public boolean equals( Object o ) 054 { 055 if( this == o ) 056 { 057 return true; 058 } 059 if( o == null || getClass() != o.getClass() ) 060 { 061 return false; 062 } 063 final MethodSignature that = ( MethodSignature ) o; 064 if( !name.equals( that.name ) ) 065 { 066 return false; 067 } 068 if( !parameterTypes.equals( that.parameterTypes ) ) 069 { 070 return false; 071 } 072 return true; 073 } 074 075 public int hashCode() 076 { 077 int result; 078 result = name.hashCode(); 079 result = 29 * result + parameterTypes.hashCode(); 080 return result; 081 } 082 } 083