01: /*
02: * $Id: ObjectArrayIndexLoader.java,v 1.6 2004/08/13 02:01:11 ahimanikya Exp $
03: * =======================================================================
04: * Copyright (c) 2002 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.IOException;
44: import java.io.ObjectInputStream;
45: import java.io.ObjectOutputStream;
46: import java.util.ArrayList;
47: import java.util.List;
48:
49: import org.apache.commons.collections.primitives.IntList;
50: import org.axiondb.Column;
51: import org.axiondb.Index;
52: import org.axiondb.engine.indexes.BaseArrayIndex;
53: import org.axiondb.engine.indexes.BaseArrayIndexLoader;
54: import org.axiondb.engine.indexes.ObjectArrayIndex;
55:
56: /**
57: * An {@link IndexLoader} for {@link ObjectArrayIndex}.
58: *
59: * @version $Revision: 1.6 $ $Date: 2004/08/13 02:01:11 $
60: * @author Rodney Waldhoff
61: */
62: public class ObjectArrayIndexLoader extends BaseArrayIndexLoader {
63: public ObjectArrayIndexLoader() {
64: }
65:
66: protected Object readKeys(ObjectInputStream in) throws IOException,
67: ClassNotFoundException {
68: int keysize = in.readInt();
69: ArrayList keys = new ArrayList(keysize);
70: for (int i = 0; i < keysize; i++) {
71: keys.add(in.readObject());
72: }
73: return keys;
74: }
75:
76: protected Index makeIndex(String name, Column col, boolean unique,
77: Object keys, IntList values) {
78: return new ObjectArrayIndex(name, col, unique,
79: (ArrayList) keys, values);
80: }
81:
82: protected void writeKeys(ObjectOutputStream out,
83: BaseArrayIndex baseindex) throws IOException {
84: ObjectArrayIndex index = (ObjectArrayIndex) baseindex;
85: List keylist = index.getKeyList();
86: out.writeInt(keylist.size());
87: for (int i = 0, I = keylist.size(); i < I; i++) {
88: out.writeObject(keylist.get(i));
89: }
90: }
91:
92: }
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