| /* |
| * 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.api.ldap.model.schema.comparators; |
| |
| |
| import org.apache.directory.api.ldap.model.schema.LdapComparator; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| /** |
| * A comparator for CSN SID. |
| * |
| * The SID is supposed to be an hexadecimal number between 0x0 and 0xfff |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public class CsnSidComparator extends LdapComparator<String> |
| { |
| /** The serial version UID */ |
| private static final long serialVersionUID = 2L; |
| |
| /** A logger for this class */ |
| private static final Logger LOG = LoggerFactory.getLogger( CsnSidComparator.class ); |
| |
| |
| /** |
| * The CsnSidComparator constructor. Its OID is the CsnSidMatch matching |
| * rule OID. |
| */ |
| public CsnSidComparator( String oid ) |
| { |
| super( oid ); |
| } |
| |
| |
| /** |
| * @see java.util.Comparator#compare(java.lang.Object, java.lang.Object) |
| */ |
| public int compare( String sidStr1, String sidStr2 ) |
| { |
| LOG.debug( "comparing CSN SID objects '{}' with '{}'", sidStr1, sidStr2 ); |
| |
| // ------------------------------------------------------------------- |
| // Handle some basis cases |
| // ------------------------------------------------------------------- |
| if ( sidStr1 == null ) |
| { |
| return ( sidStr2 == null ) ? 0 : -1; |
| } |
| |
| if ( sidStr2 == null ) |
| { |
| return 1; |
| } |
| |
| int sid1 = 0; |
| int sid2 = 0; |
| |
| try |
| { |
| sid1 = Integer.parseInt( sidStr1, 16 ); |
| } |
| catch ( NumberFormatException nfe ) |
| { |
| return -1; |
| } |
| |
| try |
| { |
| sid2 = Integer.parseInt( sidStr2, 16 ); |
| } |
| catch ( NumberFormatException nfe ) |
| { |
| return 1; |
| } |
| |
| if ( sid1 > sid2 ) |
| { |
| return 1; |
| } |
| else if ( sid2 > sid1 ) |
| { |
| return -1; |
| } |
| |
| return 0; |
| } |
| } |