1 /**
2 * Copyright (c) 2011, University of Konstanz, Distributed Systems Group
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the University of Konstanz nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 package org.treetank.service.xml.diff;
29
30 import org.treetank.api.INodeReadTrx;
31 import org.treetank.exception.TTException;
32 import org.treetank.node.IConstants;
33 import org.treetank.service.xml.diff.DiffFactory.Builder;
34
35 /**
36 * Structural diff, thus no attributes and namespace nodes are taken into
37 * account. Note that this class is thread safe.
38 *
39 * @author Johannes Lichtenberger, University of Konstanz
40 *
41 */
42 final class StructuralDiff extends AbsDiff {
43
44 /**
45 * Constructor.
46 *
47 * @param paramBuilder
48 * {@link Builder} reference
49 * @throws TTException
50 */
51 public StructuralDiff(final Builder paramBuilder) throws TTException {
52 super(paramBuilder);
53 }
54
55 /** {@inheritDoc} */
56 @Override
57 boolean checkNodes(final INodeReadTrx paramNewRtx, final INodeReadTrx paramOldRtx) {
58 boolean found = false;
59 if (paramNewRtx.getNode().getDataKey() == paramOldRtx.getNode().getDataKey()) {
60 if (paramNewRtx.getNode().getKind() == paramOldRtx.getNode().getKind()) {
61 switch (paramNewRtx.getNode().getKind()) {
62 case IConstants.ELEMENT:
63 if (paramNewRtx.getQNameOfCurrentNode().equals(paramOldRtx.getQNameOfCurrentNode())) {
64 found = true;
65 }
66 break;
67 case IConstants.TEXT:
68 if (paramNewRtx.getValueOfCurrentNode().equals(paramOldRtx.getValueOfCurrentNode())) {
69 found = true;
70 }
71 break;
72 }
73 }
74 }
75 return found;
76 }
77 }