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.geronimo.gbean;
019
020 import java.lang.reflect.Method;
021 import java.util.List;
022
023 /**
024 * This is a key class based on a MBean operation name and parameters.
025 *
026 * @version $Rev: 476049 $ $Date: 2006-11-16 23:35:17 -0500 (Thu, 16 Nov 2006) $
027 */
028 public final class GOperationSignature {
029 private final static String[] NO_TYPES = new String[0];
030 private final String name;
031 private final String[] argumentTypes;
032
033 public GOperationSignature(Method method) {
034 name = method.getName();
035 Class[] parameters = method.getParameterTypes();
036 argumentTypes = new String[parameters.length];
037 for (int i = 0; i < parameters.length; i++) {
038 argumentTypes[i] = parameters[i].getName();
039 }
040 }
041
042 public GOperationSignature(String name, String[] argumentTypes) {
043 this.name = name;
044 if (argumentTypes != null) {
045 this.argumentTypes = argumentTypes;
046 } else {
047 this.argumentTypes = NO_TYPES;
048 }
049 }
050
051 public GOperationSignature(String name, List argumentTypes) {
052 this.name = name;
053 if (argumentTypes != null) {
054 this.argumentTypes = new String[argumentTypes.size()];
055 for (int i = 0; i < argumentTypes.size(); i++) {
056 this.argumentTypes[i] = (String) argumentTypes.get(i);
057 }
058 } else {
059 this.argumentTypes = NO_TYPES;
060 }
061 }
062
063 public boolean equals(Object object) {
064 if (!(object instanceof GOperationSignature)) {
065 return false;
066 }
067
068 // match names
069 GOperationSignature methodKey = (GOperationSignature) object;
070 if (!methodKey.name.equals(name)) {
071 return false;
072 }
073
074 // match arg length
075 int length = methodKey.argumentTypes.length;
076 if (length != argumentTypes.length) {
077 return false;
078 }
079
080 // match each arg
081 for (int i = 0; i < length; i++) {
082 if (!methodKey.argumentTypes[i].equals(argumentTypes[i])) {
083 return false;
084 }
085 }
086 return true;
087 }
088
089 public int hashCode() {
090 int result = 17;
091 result = 37 * result + name.hashCode();
092 for (int i = 0; i < argumentTypes.length; i++) {
093 result = 37 * result + argumentTypes[i].hashCode();
094 }
095 return result;
096 }
097
098 public String toString() {
099 StringBuffer buffer = new StringBuffer(name).append("(");
100 for (int i = 0; i < argumentTypes.length; i++) {
101 if (i > 0) {
102 buffer.append(", ");
103 }
104 buffer.append(argumentTypes[i]);
105 }
106 return buffer.append(")").toString();
107 }
108 }