1 /***
2 * Redistribution and use in source and binary forms, with or without
3 * modification, are permitted provided that the following conditions are
4 * met :
5 *
6 * . Redistributions of source code must retain the above copyright
7 * notice, this list of conditions and the following disclaimer.
8 *
9 * . Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * . The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
25 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 *
28 * $Id$
29 */
30
31 package palmed.io;
32
33 import javax.microedition.rms.RecordEnumeration;
34 import javax.microedition.rms.RecordStore;
35 import javax.microedition.rms.RecordStoreException;
36
37 /***
38 * This class implements a record factory based on a record store.
39 *
40 * @author Mathieu Champlon
41 * @version $Revision$ $Date$
42 */
43 public final class RecordFactory implements IRecordFactory
44 {
45 /***
46 * The record store.
47 */
48 private final RecordStore store_;
49 /***
50 * The record store name.
51 */
52 private final String name_;
53
54 /***
55 * Create a record factory.
56 *
57 * @param name the record store name
58 */
59 public RecordFactory( final String name )
60 {
61 try
62 {
63 store_ = RecordStore.openRecordStore( name, true );
64 }
65 catch( RecordStoreException e )
66 {
67 throw new RecordException( e );
68 }
69 name_ = name;
70 }
71
72 /***
73 * {@inheritDoc}
74 */
75 public IRecord createRecord( final ISerializable serializable )
76 {
77 return new Record( store_, serializable );
78 }
79
80 /***
81 * {@inheritDoc}
82 */
83 public IRecord getIndex( final ISerializable serializable )
84 {
85 try
86 {
87 final RecordEnumeration records = store_.enumerateRecords( null, null, false );
88 if( records.hasNextElement() )
89 return new Record( store_, serializable, records.nextRecordId() );
90 final Record record = new Record( store_, serializable );
91 record.persist();
92 return record;
93 }
94 catch( RecordStoreException e )
95 {
96 throw new RecordException( e );
97 }
98 }
99
100 /***
101 * {@inheritDoc}
102 */
103 public void purge()
104 {
105 try
106 {
107 store_.closeRecordStore();
108 RecordStore.deleteRecordStore( name_ );
109 }
110 catch( RecordStoreException e )
111 {
112 throw new RecordException( e );
113 }
114 }
115 }