001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common
008: * Development and Distribution License("CDDL") (collectively, the
009: * "License"). You may not use this file except in compliance with the
010: * License. You can obtain a copy of the License at
011: * http://www.netbeans.org/cddl-gplv2.html
012: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013: * specific language governing permissions and limitations under the
014: * License. When distributing the software, include this License Header
015: * Notice in each file and include the License file at
016: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
017: * particular file as subject to the "Classpath" exception as provided
018: * by Sun in the GPL Version 2 section of the License file that
019: * accompanied this code. If applicable, add the following below the
020: * License Header, with the fields enclosed by brackets [] replaced by
021: * your own identifying information:
022: * "Portions Copyrighted [year] [name of copyright owner]"
023: *
024: * Contributor(s):
025: *
026: * The Original Software is NetBeans. The Initial Developer of the Original
027: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
028: * Microsystems, Inc. All Rights Reserved.
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030: * If you wish your version of this file to be governed by only the CDDL
031: * or only the GPL Version 2, indicate your decision by adding
032: * "[Contributor] elects to include this software in this distribution
033: * under the [CDDL or GPL Version 2] license." If you do not indicate a
034: * single choice of license, a recipient has the option to distribute
035: * your version of this file under either the CDDL, the GPL Version 2 or
036: * to extend the choice of license to its licensees as provided above.
037: * However, if you add GPL Version 2 code and therefore, elected the GPL
038: * Version 2 license, then the option applies only if the new code is
039: * made subject to such option by the copyright holder.
040: */
041:
042: package org.netbeans.modules.cnd.repository.sfs.index;
043:
044: import java.io.DataInput;
045: import java.io.DataOutput;
046: import java.io.IOException;
047: import org.netbeans.modules.cnd.repository.support.AbstractObjectFactory;
048: import org.netbeans.modules.cnd.repository.support.SelfPersistent;
049:
050: /**
051: *
052: * @author Nickolay Dalmatov
053: */
054: public class FileIndexFactory extends AbstractObjectFactory {
055: private static FileIndexFactory theFactory;
056: private static final Object lock = new Object();
057:
058: /** Creates a new instance of FileIndexFactory */
059: protected FileIndexFactory() {
060: }
061:
062: public static FileIndexFactory getDefaultFactory() {
063: synchronized (lock) {
064: if (theFactory == null) {
065: theFactory = new FileIndexFactory();
066: }
067: }
068: return theFactory;
069: }
070:
071: public void writeIndex(final FileIndex anIndex,
072: final DataOutput aStream) throws IOException {
073: assert anIndex instanceof SelfPersistent;
074: super .writeSelfPersistent((SelfPersistent) anIndex, aStream);
075: }
076:
077: public FileIndex readIndex(final DataInput aStream)
078: throws IOException {
079: assert aStream != null;
080: SelfPersistent out = super .readSelfPersistent(aStream);
081: assert out instanceof FileIndex;
082: return (FileIndex) out;
083: }
084:
085: protected int getHandler(final Object object) {
086: final int aHandle;
087:
088: if (object instanceof SimpleFileIndex) {
089: aHandle = FILE_INDEX_SIMPLE;
090: } else if (object instanceof CompactFileIndex) {
091: aHandle = FILE_INDEX_COMPACT;
092: } else {
093: throw new IllegalArgumentException(
094: "The Index is an instance of the unknown final class "
095: + object.getClass().getName()); // NOI18N
096: }
097: return aHandle;
098: }
099:
100: protected SelfPersistent createObject(final int handler,
101: final DataInput stream) throws IOException {
102: final SelfPersistent anIndex;
103:
104: switch (handler) {
105: case FILE_INDEX_SIMPLE:
106: anIndex = new SimpleFileIndex(stream);
107: break;
108: case FILE_INDEX_COMPACT:
109: anIndex = new CompactFileIndex(stream);
110: break;
111: default:
112: throw new IllegalArgumentException(
113: "Unknown hander for index was provided: " + handler); // NOI18N
114: }
115:
116: return anIndex;
117: }
118:
119: private static final int FIRST_INDEX = 0;
120: private static final int FILE_INDEX_SIMPLE = FIRST_INDEX;
121: private static final int FILE_INDEX_COMPACT = FILE_INDEX_SIMPLE + 1;
122: public static final int LAST_INDEX = FILE_INDEX_COMPACT;
123:
124: }
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