001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 * 019 */ 020package org.apache.directory.api.ldap.model.schema; 021 022 023/** 024 * A class containing a SchemaObject, used by the global registries. As the hash code 025 * method of the SchemaObject class is too complex, we had to define a simplest class 026 * for this purpose, where the hash code is computed using only the SchemaObject 027 * type and its OID. 028 * 029 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 030 */ 031public class SchemaObjectWrapper 032{ 033 /** The internal schemaObject */ 034 private SchemaObject schemaObject; 035 036 037 /** 038 * Creates a new instance of SchemaObjectWrapper. 039 * 040 * @param schemaObject The contained SchemaObject 041 */ 042 public SchemaObjectWrapper( SchemaObject schemaObject ) 043 { 044 this.schemaObject = schemaObject; 045 } 046 047 048 /** 049 * Compute the hash code for this wrapper. We only use the object type 050 * and its oid. 051 */ 052 public int hashCode() 053 { 054 int h = 37; 055 h += h * 17 + schemaObject.getObjectType().getValue(); 056 057 if ( schemaObject.getOid() != null ) 058 { 059 h += h * 17 + schemaObject.getOid().hashCode(); 060 } 061 062 return h; 063 } 064 065 066 /** 067 * @see Object#equals(Object) 068 */ 069 public boolean equals( Object o ) 070 { 071 if ( o == this ) 072 { 073 return true; 074 } 075 076 if ( !( o instanceof SchemaObjectWrapper ) ) 077 { 078 return false; 079 } 080 081 SchemaObject that = ( ( SchemaObjectWrapper ) o ).get(); 082 SchemaObject current = get(); 083 084 // Ultimately, that has to be true, regardless of the OID value 085 if ( that.getObjectType() != current.getObjectType() ) 086 { 087 return false; 088 } 089 090 // If both OID are null, instances are equals 091 if ( that.getOid() == null ) 092 { 093 return ( current.getOid() == null ); 094 } 095 096 // The that'oid will never be null, we don't really care if current.oid is null here. 097 return that.getOid().equals( current.getOid() ); 098 } 099 100 101 /** 102 * @return The interned SchemaObject 103 */ 104 public SchemaObject get() 105 { 106 return schemaObject; 107 } 108 109 110 /** 111 * @see Object#toString() 112 */ 113 public String toString() 114 { 115 return "<" + schemaObject.getObjectType() + "," + schemaObject.getOid() + ">"; 116 } 117}