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


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.server.schema.ComparatorRegistry;
21 import org.apache.ldap.server.schema.ComparatorRegistryMonitor;
22 import org.apache.ldap.server.schema.ComparatorRegistryMonitorAdapter;
23 import org.apache.ldap.server.schema.SerializableComparator;
24
25 import javax.naming.NamingException JavaDoc;
26 import java.util.Comparator JavaDoc;
27 import java.util.HashMap JavaDoc;
28 import java.util.Map JavaDoc;
29
30
31 /**
32  * A simple POJO implementation of the ComparatorRegistry service interface.
33  *
34  * @author <a HREF="mailto:dev@directory.apache.org">Apache Directory Project</a>
35  * @version $Rev: 169198 $
36  */
37 public class BootstrapComparatorRegistry implements ComparatorRegistry
38 {
39     /** the comparators in this registry */
40     private final Map JavaDoc comparators;
41     /** maps an OID to a schema name*/
42     private final Map JavaDoc oidToSchema;
43     /** the monitor for delivering callback events */
44     private ComparatorRegistryMonitor monitor;
45
46
47     // ------------------------------------------------------------------------
48 // C O N S T R U C T O R S
49 // ------------------------------------------------------------------------
50
51
52     /**
53      * Creates a default ComparatorRegistry by initializing the map and the
54      * montior.
55      */
56     public BootstrapComparatorRegistry()
57     {
58         this.oidToSchema = new HashMap JavaDoc();
59         this.comparators = new HashMap JavaDoc();
60         this.monitor = new ComparatorRegistryMonitorAdapter();
61
62         SerializableComparator.setRegistry( this );
63     }
64
65
66     /**
67      * Sets the monitor used by this registry.
68      *
69      * @param monitor the monitor to set for registry event callbacks
70      */
71     public void setMonitor( ComparatorRegistryMonitor monitor )
72     {
73         this.monitor = monitor;
74     }
75
76
77     // ------------------------------------------------------------------------
78 // Service Methods
79 // ------------------------------------------------------------------------
80
81
82     public void register( String JavaDoc schema, String JavaDoc oid, Comparator comparator ) throws NamingException JavaDoc
83     {
84         if ( comparators.containsKey( oid ) )
85         {
86             NamingException JavaDoc e = new NamingException JavaDoc( "Comparator with OID "
87                 + oid + " already registered!" );
88             monitor.registerFailed( oid, comparator, e );
89             throw e;
90         }
91
92         oidToSchema.put( oid, schema );
93         comparators.put( oid, comparator );
94         monitor.registered( oid, comparator );
95     }
96
97
98     public Comparator lookup( String JavaDoc oid ) throws NamingException JavaDoc
99     {
100         if ( comparators.containsKey( oid ) )
101         {
102             Comparator c = ( Comparator ) comparators.get( oid );
103             monitor.lookedUp( oid, c );
104             return c;
105         }
106
107
108         NamingException JavaDoc e = new NamingException JavaDoc( "Comparator not found for OID: " + oid );
109         monitor.lookupFailed( oid, e );
110         throw e;
111     }
112
113
114     public boolean hasComparator( String JavaDoc oid )
115     {
116         return comparators.containsKey( oid );
117     }
118
119
120     public String JavaDoc getSchemaName( String JavaDoc oid ) throws NamingException JavaDoc
121     {
122         if ( ! Character.isDigit( oid.charAt( 0 ) ) )
123         {
124             throw new NamingException JavaDoc( "OID " + oid + " is not a numeric OID" );
125         }
126         
127         if ( oidToSchema.containsKey( oid ) )
128         {
129             return ( String JavaDoc ) oidToSchema.get( oid );
130         }
131
132         throw new NamingException JavaDoc( "OID " + oid + " not found in oid to " +
133             "schema name map!" );
134     }
135 }
136
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