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.aci.protectedItem; 021 022 023import java.util.Collections; 024import java.util.Iterator; 025import java.util.Set; 026 027import org.apache.directory.api.ldap.aci.ProtectedItem; 028 029 030/** 031 * Restricts values added to the attribute type to being values that are 032 * already present in the same entry as values of the attribute valuesIn. It 033 * is examined if the protected item is an attribute value of the specified 034 * type and the permission sought is add. Values of the valuesIn attribute 035 * are checked without regard to context or access control and as though the 036 * operation which adds the values were successful. If the value to be added 037 * is not present in valuesIn the ACI item is treated as not granting add 038 * access. 039 * 040 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 041 */ 042public class RestrictedByItem extends ProtectedItem 043{ 044 /** The set of restricted elements */ 045 private final Set<RestrictedByElem> items; 046 047 /** 048 * Creates a new instance. 049 * 050 * @param items the collection of {@link RestrictedByElem}s. 051 */ 052 public RestrictedByItem( Set<RestrictedByElem> items ) 053 { 054 this.items = Collections.unmodifiableSet( items ); 055 } 056 057 058 /** 059 * Gets an iterator of all {@link RestrictedByElem}s. 060 * 061 * @return the iterator of all {@link RestrictedByElem}s 062 */ 063 public Iterator<RestrictedByElem> iterator() 064 { 065 return items.iterator(); 066 } 067 068 069 /** 070 * {@inheritDoc} 071 */ 072 @Override 073 public int hashCode() 074 { 075 int hash = 37; 076 077 if ( items != null ) 078 { 079 for ( RestrictedByElem item : items ) 080 { 081 if ( item != null ) 082 { 083 hash = hash * 17 + item.hashCode(); 084 } 085 else 086 { 087 hash = hash * 17 + 37; 088 } 089 } 090 } 091 092 return hash; 093 } 094 095 096 /** 097 * {@inheritDoc} 098 */ 099 @Override 100 public boolean equals( Object o ) 101 { 102 if ( this == o ) 103 { 104 return true; 105 } 106 107 if ( o instanceof RestrictedByItem ) 108 { 109 RestrictedByItem that = ( RestrictedByItem ) o; 110 111 if ( items != null ) 112 { 113 if ( that.items == null ) 114 { 115 return false; 116 } 117 118 if ( items.size() != that.items.size() ) 119 { 120 return false; 121 } 122 123 for ( RestrictedByElem item : items ) 124 { 125 if ( !that.items.contains( item ) ) 126 { 127 return false; 128 } 129 } 130 131 return true; 132 } 133 else 134 { 135 return that.items == null; 136 } 137 } 138 139 return false; 140 } 141 142 143 /** 144 * {@inheritDoc} 145 */ 146 @Override 147 public String toString() 148 { 149 StringBuilder buf = new StringBuilder(); 150 151 buf.append( "restrictedBy {" ); 152 153 boolean isFirst = true; 154 155 if ( items != null ) 156 { 157 for ( RestrictedByElem item : items ) 158 { 159 if ( isFirst ) 160 { 161 isFirst = false; 162 } 163 else 164 { 165 buf.append( ", " ); 166 } 167 168 buf.append( item.toString() ); 169 } 170 } 171 172 buf.append( '}' ); 173 174 return buf.toString(); 175 } 176}