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 */ 020 package org.apache.directory.shared.ldap.aci; 021 022 023 import java.io.Serializable; 024 import java.util.Collection; 025 import java.util.Collections; 026 import java.util.HashSet; 027 import java.util.Set; 028 029 030 /** 031 * An abstract base class for {@link ItemPermission} and {@link UserPermission}. 032 * 033 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 034 * @version $Rev: 572194 $, $Date: 2007-09-03 01:58:18 +0200 (Mon, 03 Sep 2007) $ 035 */ 036 public abstract class Permission implements Serializable 037 { 038 private final int precedence; 039 040 private final Set<GrantAndDenial> grantsAndDenials; 041 042 private final Set<GrantAndDenial> grants; 043 044 private final Set<GrantAndDenial> denials; 045 046 047 /** 048 * Creates a new instance 049 * 050 * @param precedence 051 * the precedence of this permission (<tt>-1</tt> to use the 052 * default) 053 * @param grantsAndDenials 054 * the set of {@link GrantAndDenial}s 055 */ 056 protected Permission(int precedence, Collection<GrantAndDenial> grantsAndDenials) 057 { 058 if ( precedence < 0 || precedence > 255 ) 059 { 060 precedence = -1; 061 } 062 063 this.precedence = precedence; 064 065 Set<GrantAndDenial> tmpGrantsAndDenials = new HashSet<GrantAndDenial>(); 066 Set<GrantAndDenial> tmpGrants = new HashSet<GrantAndDenial>(); 067 Set<GrantAndDenial> tmpDenials = new HashSet<GrantAndDenial>(); 068 069 for ( GrantAndDenial gad:grantsAndDenials ) 070 { 071 if ( gad.isGrant() ) 072 { 073 tmpGrants.add( gad ); 074 } 075 else 076 { 077 tmpDenials.add( gad ); 078 } 079 080 tmpGrantsAndDenials.add( gad ); 081 } 082 083 this.grants = Collections.unmodifiableSet( tmpGrants ); 084 this.denials = Collections.unmodifiableSet( tmpDenials ); 085 this.grantsAndDenials = Collections.unmodifiableSet( tmpGrantsAndDenials ); 086 } 087 088 089 /** 090 * Returns the precedence of this permission. 091 */ 092 public int getPrecedence() 093 { 094 return precedence; 095 } 096 097 098 /** 099 * Returns the set of {@link GrantAndDenial}s. 100 */ 101 public Set<GrantAndDenial> getGrantsAndDenials() 102 { 103 return grantsAndDenials; 104 } 105 106 107 /** 108 * Returns the set of grants only. 109 */ 110 public Set<GrantAndDenial> getGrants() 111 { 112 return grants; 113 } 114 115 116 /** 117 * Returns the set of denials only. 118 */ 119 public Set<GrantAndDenial> getDenials() 120 { 121 return denials; 122 } 123 }