01: /*
02: * $Id: ObjectBTreeIndexLoader.java,v 1.8 2005/04/24 21:29:11 ahimanikya Exp $
03: * =======================================================================
04: * Copyright (c) 2002-2005 Axion Development Team. All rights reserved.
05: *
06: * Redistribution and use in source and binary forms, with or without
07: * modification, are permitted provided that the following conditions
08: * are met:
09: *
10: * 1. Redistributions of source code must retain the above
11: * copyright notice, this list of conditions and the following
12: * disclaimer.
13: *
14: * 2. Redistributions in binary form must reproduce the above copyright
15: * notice, this list of conditions and the following disclaimer in
16: * the documentation and/or other materials provided with the
17: * distribution.
18: *
19: * 3. The names "Tigris", "Axion", nor the names of its contributors may
20: * not be used to endorse or promote products derived from this
21: * software without specific prior written permission.
22: *
23: * 4. Products derived from this software may not be called "Axion", nor
24: * may "Tigris" or "Axion" appear in their names without specific prior
25: * written permission.
26: *
27: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
28: * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
29: * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
30: * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
31: * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
32: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
33: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
34: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
35: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
36: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
37: * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38: * =======================================================================
39: */
40:
41: package org.axiondb.engine;
42:
43: import java.io.File;
44: import java.io.IOException;
45:
46: import org.axiondb.AxionException;
47: import org.axiondb.Column;
48: import org.axiondb.Index;
49: import org.axiondb.IndexLoader;
50: import org.axiondb.engine.indexes.BaseBTreeIndexLoader;
51: import org.axiondb.engine.indexes.ObjectBTreeIndex;
52:
53: /**
54: * An {@link IndexLoader}for {@link ObjectBTreeIndex}.
55: *
56: * @version $Revision: 1.8 $ $Date: 2005/04/24 21:29:11 $
57: * @author Dave Pekarek Krohn
58: * @author Ahimanikya Satapathy
59: */
60: public class ObjectBTreeIndexLoader extends BaseBTreeIndexLoader
61: implements IndexLoader {
62: public ObjectBTreeIndexLoader() {
63: }
64:
65: protected Index makeIndex(String name, Column col, boolean unique,
66: File dataDirectory) throws AxionException {
67: return new ObjectBTreeIndex(name, col, unique, dataDirectory);
68: }
69:
70: public void save(Index ndx, File dataDirectory)
71: throws AxionException {
72: ObjectBTreeIndex index = (ObjectBTreeIndex) ndx;
73: try {
74: index.getBTree().save(dataDirectory);
75: } catch (IOException e) {
76: throw new AxionException(e);
77: } catch (ClassNotFoundException e) {
78: throw new AxionException(e);
79: }
80: }
81:
82: public void saveIndexAfterTruncate(Index ndx, File dataDirectory)
83: throws AxionException {
84: ObjectBTreeIndex index = (ObjectBTreeIndex) ndx;
85: try {
86: index.getBTree().saveAfterTruncate();
87: } catch (IOException e) {
88: throw new AxionException(e);
89: } catch (ClassNotFoundException e) {
90: throw new AxionException(e);
91: }
92: }
93: }
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