| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.directory.server.schema; |
| |
| |
| import java.util.Comparator; |
| |
| import javax.naming.Name; |
| import javax.naming.NamingException; |
| |
| import org.apache.directory.server.schema.registries.AttributeTypeRegistry; |
| import org.apache.directory.server.schema.registries.Registries; |
| import org.apache.directory.shared.ldap.name.LdapDN; |
| |
| |
| /** |
| * A comparator for the uniqueMember match |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| * @version $Rev$ |
| */ |
| public class NameAndOptionalUIDComparator implements Comparator |
| { |
| // @TODO you'll need this to fix the way normalization is done |
| private AttributeTypeRegistry attrRegistry; |
| |
| |
| public NameAndOptionalUIDComparator( AttributeTypeRegistry attrRegistry ) |
| { |
| this.attrRegistry = attrRegistry; |
| } |
| |
| |
| public NameAndOptionalUIDComparator() |
| { |
| } |
| |
| |
| public void setRegistries( Registries registries ) |
| { |
| attrRegistry = registries.getAttributeTypeRegistry(); |
| } |
| |
| /** |
| * Comparing two uniqueMember is a matter of following this algorithm: |
| * - if they are only DN, then the values should be equal |
| * - otherwise, both element should contain the same DN and |
| * * if they both have an UID, they should be equals. |
| */ |
| public int compare( Object obj0, Object obj1 ) |
| { |
| String dnstr0 = null; |
| String dnstr1 = null; |
| |
| if ( ( obj0 instanceof String ) && ( obj1 instanceof String) ) |
| { |
| dnstr0 = (String)obj0; |
| dnstr1 = (String)obj1; |
| |
| int dash0 = dnstr0.lastIndexOf( '#' ); |
| int dash1 = dnstr1.lastIndexOf( '#' ); |
| |
| if ( ( dash0 == -1 ) && ( dash1 == -1 ) ) |
| { |
| // no UID part |
| try |
| { |
| return getDn( dnstr0 ).compareTo( getDn ( dnstr1 ) ); |
| } |
| catch ( NamingException ne ) |
| { |
| return -1; |
| } |
| } |
| else |
| { |
| // Now, check that we don't have another '#' |
| if ( dnstr0.indexOf( '#' ) != dash0 ) |
| { |
| // Yes, we have one : this is not allowed, it should have been |
| // escaped. |
| return -1; |
| } |
| |
| if ( dnstr1.indexOf( '#' ) != dash0 ) |
| { |
| // Yes, we have one : this is not allowed, it should have been |
| // escaped. |
| return 1; |
| } |
| |
| LdapDN dn0 = null; |
| LdapDN dn1 = null; |
| |
| // This is an UID if the '#' is immediatly |
| // followed by a BitString, except if the '#' is |
| // on the last position |
| String uid0 = dnstr0.substring( dash0 + 1 ); |
| |
| if ( dash0 > 0 ) |
| { |
| try |
| { |
| dn0 = new LdapDN( dnstr0.substring( 0, dash0 ) ); |
| } |
| catch ( NamingException ne ) |
| { |
| return -1; |
| } |
| } |
| else |
| { |
| return -1; |
| } |
| |
| // This is an UID if the '#' is immediatly |
| // followed by a BitString, except if the '#' is |
| // on the last position |
| String uid1 = dnstr1.substring( dash1 + 1 ); |
| |
| if ( dash1 > 0 ) |
| { |
| try |
| { |
| dn1 = new LdapDN( dnstr0.substring( 0, dash1 ) ); |
| } |
| catch ( NamingException ne ) |
| { |
| return 1; |
| } |
| } |
| else |
| { |
| return 1; |
| } |
| |
| int dnComp = dn0.compareTo( dn1 ); |
| |
| if ( dnComp != 0 ) |
| { |
| return dnComp; |
| } |
| |
| return uid0.compareTo( uid1 ); |
| } |
| } |
| else |
| { |
| return -1; |
| } |
| } |
| |
| |
| public LdapDN getDn( Object obj ) throws NamingException |
| { |
| LdapDN dn = null; |
| |
| if ( obj instanceof LdapDN ) |
| { |
| dn = (LdapDN)obj; |
| |
| dn = ( dn.isNormalized() ? dn : LdapDN.normalize( dn, attrRegistry.getNormalizerMapping() ) ); |
| } |
| else if ( obj instanceof Name ) |
| { |
| dn = new LdapDN( ( Name ) obj ); |
| dn.normalize( attrRegistry.getNormalizerMapping() ); |
| } |
| else if ( obj instanceof String ) |
| { |
| dn = new LdapDN( ( String ) obj ); |
| dn.normalize( attrRegistry.getNormalizerMapping() ); |
| } |
| else |
| { |
| throw new IllegalStateException( "I do not know how to handle dn comparisons with objects of class: " |
| + (obj == null ? null : obj.getClass() ) ); |
| } |
| |
| return dn; |
| } |
| } |