01: /*
02: * $Id: BTreeIndexFactory.java,v 1.11 2005/12/23 01:32:24 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 org.axiondb.AxionException;
44: import org.axiondb.Column;
45: import org.axiondb.Index;
46: import org.axiondb.IndexFactory;
47: import org.axiondb.engine.indexes.BaseIndexFactory;
48: import org.axiondb.engine.indexes.IntBTreeIndex;
49: import org.axiondb.engine.indexes.ObjectBTreeIndex;
50: import org.axiondb.engine.indexes.StringBTreeIndex;
51: import org.axiondb.types.CharacterType;
52: import org.axiondb.types.IntegerType;
53: import org.axiondb.types.StringType;
54:
55: /**
56: * An {@link IndexFactory}for {@link BaseBTreeIndex B-Tree indices}.
57: *
58: * @version $Revision: 1.11 $ $Date: 2005/12/23 01:32:24 $
59: * @author Dave Perkarek Krohn
60: */
61: public class BTreeIndexFactory extends BaseIndexFactory implements
62: IndexFactory {
63: public BTreeIndexFactory() {
64: }
65:
66: public Index makeNewInstance(String name, Column col,
67: boolean unique, boolean memorydb) throws AxionException {
68: if (col.getDataType() instanceof IntegerType) {
69: return new IntBTreeIndex(name, col, unique);
70: } else if (col.getDataType() instanceof CharacterType
71: || col.getDataType() instanceof StringType) {
72: return new StringBTreeIndex(name, col, unique);
73: } else {
74: return new ObjectBTreeIndex(name, col, unique);
75: }
76: }
77: }
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