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.
029: *
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.support;
043:
044: import java.io.DataInput;
045: import java.io.DataOutput;
046: import java.io.IOException;
047: import java.util.Collection;
048: import org.netbeans.modules.cnd.repository.spi.*;
049: import org.openide.util.Lookup;
050:
051: /**
052: *
053: * @author Nickolay Dalmatov
054: */
055: public abstract class KeyFactory extends AbstractObjectFactory {
056:
057: /** default instance */
058: private static KeyFactory defaultFactory;
059:
060: protected KeyFactory() {
061: }
062:
063: /** Static method to obtain the factory.
064: * @return the factory
065: */
066: public static synchronized KeyFactory getDefaultFactory() {
067: if (defaultFactory != null) {
068: return defaultFactory;
069: }
070: defaultFactory = (KeyFactory) Lookup.getDefault().lookup(
071: KeyFactory.class);
072: if (defaultFactory == null) {
073: throw new UnsupportedOperationException(
074: "There is no KeyFactory implementation to be used"); //NOI18N
075: }
076: return defaultFactory;
077: }
078:
079: /** Method to serialize a key
080: * @param aKey A key
081: * @param aStream A DataOutput Stream
082: */
083: abstract public void writeKey(Key aKey, DataOutput aStream)
084: throws IOException;
085:
086: /** Method to deserialize a key
087: * @param aStream A DataOutput Stream
088: * @return A key
089: */
090: abstract public Key readKey(DataInput aStream) throws IOException;
091:
092: /** Method to serialize a colleaction of keys
093: * @param aColliection A collection of keys
094: * @param aStream A DataOutput Stream
095: */
096: abstract public void writeKeyCollection(
097: Collection<Key> aCollection, DataOutput aStream)
098: throws IOException;
099:
100: /** Method to deserialize a colleaction of keys
101: * @param aColliection A collection of keys
102: * @param aStream A DataOutput Stream
103: */
104: abstract public void readKeyCollection(Collection<Key> aCollection,
105: DataInput aStream) throws IOException;
106: }
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