| /* |
| * 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.bootstrap; |
| |
| |
| import java.io.Serializable; |
| import java.util.Comparator; |
| |
| import javax.naming.NamingException; |
| |
| import org.apache.directory.server.schema.registries.OidRegistry; |
| import org.apache.directory.server.schema.registries.Registries; |
| import org.apache.directory.shared.ldap.util.StringTools; |
| |
| |
| /** |
| * A comparator that sorts OIDs based on their numeric id value. Needs a |
| * OidRegistry to properly do it's job. Public method to set the oid |
| * registry will be used by the server after instantiation in deserialization. |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| * @version $Rev$ |
| */ |
| public class NameOrNumericIdComparator implements Comparator, Serializable |
| { |
| private static final long serialVersionUID = 1L; |
| private transient OidRegistry registry; |
| |
| |
| public NameOrNumericIdComparator( OidRegistry registry ) |
| { |
| this.registry = registry; |
| } |
| |
| |
| public NameOrNumericIdComparator() |
| { |
| } |
| |
| |
| /* (non-Javadoc) |
| * @see java.util.Comparator#compare(java.lang.Object, java.lang.Object) |
| */ |
| public int compare( Object o1, Object o2 ) |
| { |
| String s1 = getNumericIdString( o1 ); |
| String s2 = getNumericIdString( o2 ); |
| |
| if ( s1 == null && s2 == null ) |
| { |
| return 0; |
| } |
| |
| if ( s1 == null ) |
| { |
| return -1; |
| } |
| |
| if ( s2 == null ) |
| { |
| return 1; |
| } |
| |
| return s1.compareTo( s2 ); |
| } |
| |
| |
| public void setRegistries( Registries registries ) |
| { |
| registry = registries.getOidRegistry(); |
| } |
| |
| |
| String getNumericIdString( Object obj ) |
| { |
| String strValue; |
| |
| if ( obj == null ) |
| { |
| return null; |
| } |
| |
| if ( obj instanceof String ) |
| { |
| strValue = ( String ) obj; |
| } |
| else if ( obj instanceof byte[] ) |
| { |
| strValue = StringTools.utf8ToString( ( byte[] ) obj ); |
| } |
| else |
| { |
| strValue = obj.toString(); |
| } |
| |
| if ( strValue.length() == 0 ) |
| { |
| return ""; |
| } |
| |
| if ( registry.hasOid( strValue ) ) |
| { |
| try |
| { |
| return registry.getOid( strValue ); |
| } |
| catch ( NamingException e ) |
| { |
| throw new RuntimeException( "Failed to lookup OID for " + strValue, e ); |
| } |
| } |
| |
| return strValue; |
| } |
| } |