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


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.AttributeType;
21 import org.apache.ldap.server.schema.AttributeTypeRegistry;
22 import org.apache.ldap.server.schema.AttributeTypeRegistryMonitor;
23 import org.apache.ldap.server.schema.AttributeTypeRegistryMonitorAdapter;
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 AttributeTypeRegistry.
34  *
35  * @author <a HREF="mailto:dev@directory.apache.org">Apache Directory Project</a>
36  * @version $Rev: 169198 $
37  */
38 public class BootstrapAttributeTypeRegistry implements AttributeTypeRegistry
39 {
40     /** maps an OID to an AttributeType */
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 AttributeTypeRegistryMonitor 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 BootstrapAttributeTypeRegistry.
57      */
58     public BootstrapAttributeTypeRegistry( OidRegistry oidRegistry )
59     {
60         this.byOid = new HashMap JavaDoc();
61         this.oidToSchema = new HashMap JavaDoc();
62         this.oidRegistry = oidRegistry;
63         this.monitor = new AttributeTypeRegistryMonitorAdapter();
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( AttributeTypeRegistryMonitor monitor )
73     {
74         this.monitor = monitor;
75     }
76
77
78     // ------------------------------------------------------------------------
79 // Service Methods
80 // ------------------------------------------------------------------------
81
82
83     public void register( String JavaDoc schema, AttributeType attributeType ) throws NamingException JavaDoc
84     {
85         if ( byOid.containsKey( attributeType.getOid() ) )
86         {
87             NamingException JavaDoc e = new NamingException JavaDoc( "attributeType w/ OID " +
88                 attributeType.getOid() + " has already been registered!" );
89             monitor.registerFailed( attributeType, e );
90             throw e;
91         }
92
93         String JavaDoc[] names = attributeType.getNames();
94         for ( int ii = 0; ii < names.length; ii++ )
95         {
96             oidRegistry.register( names[ii], attributeType.getOid() );
97         }
98
99         oidToSchema.put( attributeType.getOid(), schema );
100         byOid.put( attributeType.getOid(), attributeType );
101         monitor.registered( attributeType );
102     }
103
104
105     public AttributeType lookup( String JavaDoc id ) throws NamingException JavaDoc
106     {
107         id = oidRegistry.getOid( id );
108
109         if ( ! byOid.containsKey( id ) )
110         {
111             NamingException JavaDoc e = new NamingException JavaDoc( "attributeType w/ OID "
112                 + id + " not registered!" );
113             monitor.lookupFailed( id, e );
114             throw e;
115         }
116
117         AttributeType attributeType = ( AttributeType ) byOid.get( id );
118         monitor.lookedUp( attributeType );
119         return attributeType;
120     }
121
122
123     public boolean hasAttributeType( String JavaDoc id )
124     {
125         if ( oidRegistry.hasOid( id ) )
126         {
127             try
128             {
129                 return byOid.containsKey( oidRegistry.getOid( id ) );
130             }
131             catch ( NamingException JavaDoc e )
132             {
133                 return false;
134             }
135         }
136
137         return false;
138     }
139
140
141     public String JavaDoc getSchemaName( String JavaDoc id ) throws NamingException JavaDoc
142     {
143         id = oidRegistry.getOid( id );
144         if ( oidToSchema.containsKey( id ) )
145         {
146             return ( String JavaDoc ) oidToSchema.get( id );
147         }
148
149         throw new NamingException JavaDoc( "OID " + id + " not found in oid to " +
150             "schema name map!" );
151     }
152
153
154     public Iterator JavaDoc list()
155     {
156         return byOid.values().iterator();
157     }
158 }
159
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