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 the maximum number of attribute values allowed for a specified 032 * attribute type. It is examined if the protected item is an attribute 033 * value of the specified type and the permission sought is add. Values of 034 * that attribute in the entry are counted without regard to context or 035 * access control and as though the operation which adds the values were 036 * successful. If the number of values in the attribute exceeds maxCount, 037 * the ACI item is treated as not granting add access. 038 * 039 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 040 */ 041public class MaxValueCountItem extends ProtectedItem 042{ 043 /** The set of elements to protect */ 044 private final Set<MaxValueCountElem> items; 045 046 /** 047 * Creates a new instance. 048 * 049 * @param items the collection of {@link MaxValueCountElem}s. 050 */ 051 public MaxValueCountItem( Set<MaxValueCountElem> items ) 052 { 053 this.items = Collections.unmodifiableSet( items ); 054 } 055 056 057 /** 058 * Gets an iterator of all {@link MaxValueCountElem}s. 059 * 060 * @return an iterator of all {@link MaxValueCountElem}s 061 */ 062 public Iterator<MaxValueCountElem> iterator() 063 { 064 return items.iterator(); 065 } 066 067 068 /** 069 * {@inheritDoc} 070 */ 071 @Override 072 public int hashCode() 073 { 074 int hash = 37; 075 076 if ( items != null ) 077 { 078 for ( MaxValueCountElem item : items ) 079 { 080 if ( item != null ) 081 { 082 hash = hash * 17 + item.hashCode(); 083 } 084 else 085 { 086 hash = hash * 17 + 37; 087 } 088 } 089 } 090 091 return hash; 092 } 093 094 095 /** 096 * {@inheritDoc} 097 */ 098 @Override 099 public boolean equals( Object o ) 100 { 101 if ( this == o ) 102 { 103 return true; 104 } 105 106 if ( o instanceof MaxValueCountItem ) 107 { 108 MaxValueCountItem that = ( MaxValueCountItem ) o; 109 110 return items.equals( that.items ); 111 } 112 113 return false; 114 } 115 116 117 /** 118 * {@inheritDoc} 119 */ 120 @Override 121 public String toString() 122 { 123 StringBuilder buf = new StringBuilder(); 124 125 buf.append( "maxValueCount {" ); 126 127 boolean isFirst = true; 128 129 if ( items != null ) 130 { 131 for ( MaxValueCountElem item : items ) 132 { 133 if ( isFirst ) 134 { 135 isFirst = false; 136 } 137 else 138 { 139 buf.append( ", " ); 140 } 141 142 buf.append( item.toString() ); 143 } 144 } 145 146 buf.append( "}" ); 147 148 return buf.toString(); 149 } 150}