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Java > Open Source Codes > org > apache > ldap > server > schema > bootstrap > BootstrapNameFormRegistry


1 /*
2  * Copyright 2004 The Apache Software Foundation
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  *
16  */
17 package org.apache.ldap.server.schema.bootstrap;
18
19
20 import org.apache.ldap.common.schema.NameForm;
21 import org.apache.ldap.server.schema.NameFormRegistry;
22 import org.apache.ldap.server.schema.NameFormRegistryMonitor;
23 import org.apache.ldap.server.schema.NameFormRegistryMonitorAdapter;
24 import org.apache.ldap.server.schema.OidRegistry;
25
26 import javax.naming.NamingException JavaDoc;
27 import java.util.HashMap JavaDoc;
28 import java.util.Iterator JavaDoc;
29 import java.util.Map JavaDoc;
30
31
32 /**
33  * A plain old java object implementation of an NameFormRegistry.
34  *
35  * @author <a HREF="mailto:dev@directory.apache.org">Apache Directory Project</a>
36  * @version $Rev: 169198 $
37  */
38 public class BootstrapNameFormRegistry implements NameFormRegistry
39 {
40     /** maps an OID to an NameForm */
41     private final Map JavaDoc byOid;
42     /** maps an OID to a schema name*/
43     private final Map JavaDoc oidToSchema;
44     /** the registry used to resolve names to OIDs */
45     private final OidRegistry oidRegistry;
46     /** monitor notified via callback events */
47     private NameFormRegistryMonitor monitor;
48
49
50     // ------------------------------------------------------------------------
51 // C O N S T R U C T O R S
52 // ------------------------------------------------------------------------
53
54
55     /**
56      * Creates an empty BootstrapNameFormRegistry.
57      */
58     public BootstrapNameFormRegistry( OidRegistry oidRegistry )
59     {
60         this.byOid = new HashMap JavaDoc();
61         this.oidToSchema = new HashMap JavaDoc();
62         this.oidRegistry = oidRegistry;
63         this.monitor = new NameFormRegistryMonitorAdapter();
64     }
65
66
67     /**
68      * Sets the monitor that is to be notified via callback events.
69      *
70      * @param monitor the new monitor to notify of notable events
71      */
72     public void setMonitor( NameFormRegistryMonitor monitor )
73     {
74         this.monitor = monitor;
75     }
76
77
78     // ------------------------------------------------------------------------
79 // Service Methods
80 // ------------------------------------------------------------------------
81
82
83     public void register( String JavaDoc schema, NameForm nameForm ) throws NamingException JavaDoc
84     {
85         if ( byOid.containsKey( nameForm.getOid() ) )
86         {
87             NamingException JavaDoc e = new NamingException JavaDoc( "nameForm w/ OID " +
88                 nameForm.getOid() + " has already been registered!" );
89             monitor.registerFailed( nameForm, e );
90             throw e;
91         }
92
93         oidToSchema.put( nameForm.getOid(), schema );
94         oidRegistry.register( nameForm.getName(), nameForm.getOid() );
95         byOid.put( nameForm.getOid(), nameForm );
96         monitor.registered( nameForm );
97     }
98
99
100     public NameForm lookup( String JavaDoc id ) throws NamingException JavaDoc
101     {
102         id = oidRegistry.getOid( id );
103
104         if ( ! byOid.containsKey( id ) )
105         {
106             NamingException JavaDoc e = new NamingException JavaDoc( "nameForm w/ OID " + id
107                 + " not registered!" );
108             monitor.lookupFailed( id, e );
109             throw e;
110         }
111
112         NameForm nameForm = ( NameForm ) byOid.get( id );
113         monitor.lookedUp( nameForm );
114         return nameForm;
115     }
116
117
118     public boolean hasNameForm( String JavaDoc id )
119     {
120         if ( oidRegistry.hasOid( id ) )
121         {
122             try
123             {
124                 return byOid.containsKey( oidRegistry.getOid( id ) );
125             }
126             catch ( NamingException JavaDoc e )
127             {
128                 return false;
129             }
130         }
131
132         return false;
133     }
134
135
136     public String JavaDoc getSchemaName( String JavaDoc id ) throws NamingException JavaDoc
137     {
138         id = oidRegistry.getOid( id );
139         if ( oidToSchema.containsKey( id ) )
140         {
141             return ( String JavaDoc ) oidToSchema.get( id );
142         }
143
144         throw new NamingException JavaDoc( "OID " + id + " not found in oid to " +
145             "schema name map!" );
146     }
147
148
149     public Iterator JavaDoc list()
150     {
151         return byOid.values().iterator();
152     }
153 }
154
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