01: /*
02: * $Id: MemoryTTreeIndex.java,v 1.1 2005/06/30 01:14:44 ahimanikya Exp $
03: * =======================================================================
04: * Copyright (c) 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.ext.indexes.ttree;
42:
43: import java.io.File;
44:
45: import org.axiondb.AxionException;
46: import org.axiondb.Column;
47: import org.axiondb.Index;
48: import org.axiondb.IndexLoader;
49:
50: /**
51: * Disk implementation for T-Tree based {@link Index indices}, optimized for memory
52: * database.
53: *
54: * @version $Revision: 1.1 $ $Date: 2005/06/30 01:14:44 $
55: * @author Pavels Andrejevs
56: */
57: public class MemoryTTreeIndex extends TTreeIndex implements Index {
58:
59: private static final IndexLoader LOADER = new MemoryTTreeIndexLoader();
60:
61: public MemoryTTreeIndex(String name, Column column, boolean unique,
62: boolean memorydb) throws AxionException {
63: this (name, column, unique, null, DEFAULT_MAXNODESIZE, memorydb);
64: }
65:
66: public MemoryTTreeIndex(String name, Column column, boolean unique,
67: File dataDir, boolean memorydb) throws AxionException {
68: this (name, column, unique, dataDir, DEFAULT_MAXNODESIZE,
69: memorydb);
70: }
71:
72: public MemoryTTreeIndex(String name, Column column, boolean unique,
73: File dataDir, int maxNodeSize, boolean memorydb)
74: throws AxionException {
75: super (name, column, unique);
76: _tree = new MemoryTTree(maxNodeSize, column.getDataType(),
77: new TTreeMetaData(name, dataDir, memorydb));
78: }
79:
80: public IndexLoader getIndexLoader() {
81: return LOADER;
82: }
83:
84: }
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