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.server.core.event; 021 022 023 import org.apache.directory.server.i18n.I18n; 024 import org.apache.directory.shared.ldap.entry.ServerEntry; 025 import org.apache.directory.shared.ldap.exception.LdapException; 026 import org.apache.directory.shared.ldap.exception.LdapInvalidSearchFilterException; 027 import org.apache.directory.shared.ldap.filter.ExprNode; 028 import org.apache.directory.shared.ldap.filter.ScopeNode; 029 import org.apache.directory.shared.ldap.name.DN; 030 031 032 /** 033 * Evaluates ScopeNode assertions on candidates. 034 * 035 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 036 * @version $Rev: 927146 $ 037 */ 038 public class ScopeEvaluator implements Evaluator 039 { 040 public ScopeEvaluator() 041 { 042 } 043 044 045 /** 046 * @see Evaluator#evaluate(ExprNode , String, ServerEntry) 047 */ 048 public boolean evaluate( ExprNode node, String dn, ServerEntry record ) throws LdapException 049 { 050 ScopeNode snode = ( ScopeNode ) node; 051 052 switch ( snode.getScope() ) 053 { 054 case OBJECT: 055 return dn.equals( snode.getBaseDn() ); 056 057 case ONELEVEL: 058 if ( dn.endsWith( snode.getBaseDn() ) ) 059 { 060 DN candidateDn = new DN( dn ); 061 DN scopeDn = new DN( snode.getBaseDn() ); 062 return ( scopeDn.size() + 1 ) == candidateDn.size(); 063 } 064 065 case SUBTREE: 066 return dn.endsWith( snode.getBaseDn() ); 067 068 default: 069 throw new LdapInvalidSearchFilterException( I18n.err( I18n.ERR_247 ) ); 070 } 071 } 072 }