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.schema.registries;
021
022
023 import java.util.ArrayList;
024 import java.util.Iterator;
025 import java.util.List;
026 import java.util.Map;
027 import java.util.concurrent.ConcurrentHashMap;
028
029 import javax.naming.NamingException;
030
031 import org.apache.directory.shared.asn1.primitives.OID;
032 import org.apache.directory.shared.ldap.schema.SyntaxChecker;
033 import org.apache.directory.shared.ldap.schema.parsers.SyntaxCheckerDescription;
034 import org.slf4j.Logger;
035 import org.slf4j.LoggerFactory;
036
037
038 /**
039 * The POJO implementation for the SyntaxCheckerRegistry service.
040 *
041 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
042 * @version $Rev: 778529 $
043 */
044 public class DefaultSyntaxCheckerRegistry implements SyntaxCheckerRegistry
045 {
046 /** static class logger */
047 private static final Logger LOG = LoggerFactory.getLogger( DefaultSyntaxCheckerRegistry.class );
048
049 /** a map by OID of SyntaxCheckers */
050 private final Map<String, SyntaxChecker> byOidSyntaxChecker;
051
052 /** maps an OID to a syntaxCheckerDescription */
053 private final Map<String, SyntaxCheckerDescription> oidToDescription;
054
055
056 // ------------------------------------------------------------------------
057 // C O N S T R U C T O R S
058 // ------------------------------------------------------------------------
059 /**
060 * Creates an instance of a DefaultSyntaxRegistry.
061 */
062 public DefaultSyntaxCheckerRegistry()
063 {
064 byOidSyntaxChecker = new ConcurrentHashMap<String, SyntaxChecker>();
065 oidToDescription = new ConcurrentHashMap<String, SyntaxCheckerDescription>();
066 }
067
068
069 // ------------------------------------------------------------------------
070 // Service Methods
071 // ------------------------------------------------------------------------
072 /**
073 * {@inheritDoc}
074 */
075 public void register( SyntaxCheckerDescription syntaxCheckerDescription, SyntaxChecker syntaxChecker ) throws NamingException
076 {
077 String oid = syntaxChecker.getSyntaxOid();
078
079 if ( byOidSyntaxChecker.containsKey( oid ) )
080 {
081 String msg = "SyntaxChecker with OID " + oid + " already registered!";
082 LOG.warn( msg );
083 throw new NamingException( msg );
084 }
085
086 byOidSyntaxChecker.put( oid, syntaxChecker );
087 oidToDescription.put( oid, syntaxCheckerDescription );
088
089 if ( LOG.isDebugEnabled() )
090 {
091 LOG.debug( "registered syntaxChecher for OID {}", oid );
092 }
093 }
094
095
096 /**
097 * {@inheritDoc}
098 */
099 public SyntaxChecker lookup( String oid ) throws NamingException
100 {
101 SyntaxChecker syntaxChecker = byOidSyntaxChecker.get( oid );
102
103 if ( syntaxChecker == null )
104 {
105 String msg = "SyntaxChecker for OID " + oid + " not found!";
106 LOG.warn( msg );
107 throw new NamingException( msg );
108 }
109
110 if ( LOG.isDebugEnabled() )
111 {
112 LOG.debug( "looked up syntaxChecher with OID {}", oid );
113 }
114
115 return syntaxChecker;
116 }
117
118
119 /**
120 * {@inheritDoc}
121 */
122 public boolean hasSyntaxChecker( String oid )
123 {
124 return byOidSyntaxChecker.containsKey( oid );
125 }
126
127
128 /**
129 * {@inheritDoc}
130 */
131 public String getSchemaName( String oid ) throws NamingException
132 {
133 if ( ! OID.isOID( oid ) )
134 {
135 String msg = "Looks like the arg is not a numeric OID";
136 LOG.warn( msg );
137 throw new NamingException( msg );
138 }
139
140 SyntaxCheckerDescription description = oidToDescription.get( oid );
141
142 if ( description != null )
143 {
144 return getSchema( description );
145 }
146
147 String msg = "OID " + oid + " not found in oid to schema name map!";
148 LOG.warn( msg );
149 throw new NamingException( msg );
150 }
151
152
153 private static String getSchema( SyntaxCheckerDescription desc )
154 {
155 List<String> ext = desc.getExtensions().get( "X-SCHEMA" );
156
157 if ( ( ext == null ) || ( ext.size() == 0 ) )
158 {
159 return "other";
160 }
161
162 return ext.get( 0 );
163 }
164
165
166 /**
167 * {@inheritDoc}
168 */
169 public Iterator<SyntaxChecker> iterator()
170 {
171 return byOidSyntaxChecker.values().iterator();
172 }
173
174
175 /**
176 * {@inheritDoc}
177 */
178 public void unregister( String numericOid ) throws NamingException
179 {
180 if ( ! OID.isOID( numericOid ) )
181 {
182 String msg = "Looks like the arg is not a numeric OID";
183 LOG.warn( msg );
184 throw new NamingException( msg );
185 }
186
187 byOidSyntaxChecker.remove( numericOid );
188 oidToDescription.remove( numericOid );
189 }
190
191
192 /**
193 * {@inheritDoc}
194 */
195 public void unregisterSchemaElements( String schemaName )
196 {
197 List<String> oids = new ArrayList<String>( byOidSyntaxChecker.keySet() );
198
199 for ( String oid : oids )
200 {
201 SyntaxCheckerDescription description = oidToDescription.get( oid );
202 String schemaNameForOid = getSchema( description );
203
204 if ( schemaNameForOid.equalsIgnoreCase( schemaName ) )
205 {
206 byOidSyntaxChecker.remove( oid );
207 oidToDescription.remove( oid );
208 }
209 }
210 }
211
212
213 /**
214 * {@inheritDoc}
215 */
216 public void renameSchema( String originalSchemaName, String newSchemaName )
217 {
218 List<String> oids = new ArrayList<String>( byOidSyntaxChecker.keySet() );
219
220 for ( String oid : oids )
221 {
222 SyntaxCheckerDescription description = oidToDescription.get( oid );
223 String schemaNameForOid = getSchema( description );
224
225 if ( schemaNameForOid.equalsIgnoreCase( originalSchemaName ) )
226 {
227 List<String> values = description.getExtensions().get( "X-SCHEMA" );
228 values.clear();
229 values.add( newSchemaName );
230 }
231 }
232 }
233
234
235 /**
236 * {@inheritDoc}
237 */
238 public Iterator<SyntaxCheckerDescription> syntaxCheckerDescriptionIterator()
239 {
240 return oidToDescription.values().iterator();
241 }
242 }