1 /**
2 * JDBM LICENSE v1.00
3 *
4 * Redistribution and use of this software and associated documentation
5 * ("Software"), with or without modification, are permitted provided
6 * that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain copyright
9 * statements and notices. Redistributions must also contain a
10 * copy of this document.
11 *
12 * 2. Redistributions in binary form must reproduce the
13 * above copyright notice, this list of conditions and the
14 * following disclaimer in the documentation and/or other
15 * materials provided with the distribution.
16 *
17 * 3. The name "JDBM" must not be used to endorse or promote
18 * products derived from this Software without prior written
19 * permission of Cees de Groot. For written permission,
20 * please contact cg@cdegroot.com.
21 *
22 * 4. Products derived from this Software may not be called "JDBM"
23 * nor may "JDBM" appear in their names without prior written
24 * permission of Cees de Groot.
25 *
26 * 5. Due credit should be given to the JDBM Project
27 * (http://jdbm.sourceforge.net/).
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE JDBM PROJECT AND CONTRIBUTORS
30 * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
31 * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
32 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
33 * CEES DE GROOT OR ANY CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
34 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
35 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
36 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
37 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
38 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
39 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
40 * OF THE POSSIBILITY OF SUCH DAMAGE.
41 *
42 * Copyright 2000 (C) Cees de Groot. All Rights Reserved.
43 * Copyright 2000-2001 (C) Alex Boisvert. All Rights Reserved.
44 * Contributions are Copyright (C) 2000 by their associated contributors.
45 *
46 * $Id: Provider.java,v 1.3 2005/06/25 23:12:32 doomdark Exp $
47 */
48
49 package jdbm.recman;
50
51 import java.io.IOException;
52 import java.util.Properties;
53
54 import jdbm.RecordManager;
55 import jdbm.RecordManagerOptions;
56 import jdbm.RecordManagerProvider;
57
58 import jdbm.helper.MRU;
59
60 /**
61 * Provider of the default RecordManager implementation.
62 *
63 * @author <a href="mailto:boisvert@intalio.com">Alex Boisvert</a>
64 * @version $Id: Provider.java,v 1.3 2005/06/25 23:12:32 doomdark Exp $
65 */
66 public final class Provider
67 implements RecordManagerProvider
68 {
69
70 /**
71 * Create a default implementation record manager.
72 *
73 * @param name Name of the record file.
74 * @param options Record manager options.
75 * @throws IOException if an I/O related exception occurs while creating
76 * or opening the record manager.
77 * @throws UnsupportedOperationException if some options are not supported by the
78 * implementation.
79 * @throws IllegalArgumentException if some options are invalid.
80 */
81 public RecordManager createRecordManager( String name,
82 Properties options )
83 throws IOException
84 {
85 RecordManager recman;
86 String value;
87 int cacheSize;
88
89 recman = new BaseRecordManager( name );
90
91 value = options.getProperty( RecordManagerOptions.DISABLE_TRANSACTIONS, "false" );
92 if ( value.equalsIgnoreCase( "TRUE" ) ) {
93 ( (BaseRecordManager) recman ).disableTransactions();
94 }
95
96 value = options.getProperty( RecordManagerOptions.CACHE_SIZE, "1000" );
97 cacheSize = Integer.parseInt( value );
98
99 value = options.getProperty( RecordManagerOptions.CACHE_TYPE,
100 RecordManagerOptions.NORMAL_CACHE );
101 if ( value.equalsIgnoreCase( RecordManagerOptions.NORMAL_CACHE ) ) {
102 MRU cache = new MRU( cacheSize );
103 recman = new CacheRecordManager( recman, cache );
104 } else if ( value.equalsIgnoreCase( RecordManagerOptions.SOFT_REF_CACHE ) ) {
105 throw new IllegalArgumentException( "Soft reference cache not implemented" );
106 } else if ( value.equalsIgnoreCase( RecordManagerOptions.WEAK_REF_CACHE ) ) {
107 throw new IllegalArgumentException( "Weak reference cache not implemented" );
108 } else {
109 throw new IllegalArgumentException( "Invalid cache type: " + value );
110 }
111
112 return recman;
113 }
114
115
116 }