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 1997-2006 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.xml.xdm.diff;
043:
044: import java.util.ArrayList;
045: import java.util.List;
046: import org.netbeans.modules.xml.xdm.nodes.Document;
047: import org.netbeans.modules.xml.xdm.nodes.Node;
048:
049: /**
050: * This class represents diff between 2 elements of 2 XML documents
051: *
052: * @author Ayub Khan
053: */
054: public abstract class Difference {
055:
056: /** Creates a new instance of DiffEvent */
057: public Difference(NodeInfo.NodeType nodeType,
058: List<Node> ancestors1, List<Node> ancestors2, Node n1,
059: Node n2, int n1Pos, int n2Pos) {
060: this .nodeType = nodeType;
061: if (!(n1 instanceof Document)) {
062: assert ancestors1 != null && !ancestors1.isEmpty() : "diff of non-root should have ancestors";
063: }
064: this .oldNodeInfo = new NodeInfo(n1, n1Pos, ancestors1,
065: ancestors2);
066: this .newNodeInfo = new NodeInfo(n2, n2Pos, new ArrayList(
067: ancestors1), new ArrayList(ancestors2));
068: if (newNodeInfo.getNode() != null
069: && newNodeInfo.getNewAncestors().size() > 0) {
070: assert newNodeInfo.getNewAncestors().get(0).getId() != newNodeInfo
071: .getNode().getId();
072: }
073: }
074:
075: public NodeInfo.NodeType getNodeType() {
076: return nodeType;
077: }
078:
079: /**
080: * @returns info on removed node.
081: */
082: public NodeInfo getOldNodeInfo() {
083: return oldNodeInfo;
084: }
085:
086: /**
087: * @return info on added node.
088: */
089: public NodeInfo getNewNodeInfo() {
090: return newNodeInfo;
091: }
092:
093: /**
094: * @return new path from parent to root.
095: */
096: public abstract List<Node> getNewAncestors();
097:
098: public abstract void setNewParent(Node n);
099:
100: public abstract Node getNewParent();
101:
102: ////////////////////////////////////////////////////////////////////////////////
103: // Member variables
104: ////////////////////////////////////////////////////////////////////////////////
105:
106: private NodeInfo.NodeType nodeType;
107:
108: private NodeInfo oldNodeInfo;
109:
110: private NodeInfo newNodeInfo;
111:
112: }
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