1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
|
/************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
package org.openoffice.xmerge.converter.xml.sxc;
import org.w3c.dom.Node;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import org.openoffice.xmerge.Document;
import org.openoffice.xmerge.DocumentMerger;
import org.openoffice.xmerge.MergeException;
import org.openoffice.xmerge.ConverterCapabilities;
import org.openoffice.xmerge.converter.xml.OfficeConstants;
import org.openoffice.xmerge.merger.DiffAlgorithm;
import org.openoffice.xmerge.merger.Difference;
import org.openoffice.xmerge.merger.Iterator;
import org.openoffice.xmerge.merger.DiffAlgorithm;
import org.openoffice.xmerge.merger.NodeMergeAlgorithm;
import org.openoffice.xmerge.merger.diff.IteratorRowCompare;
import org.openoffice.xmerge.merger.diff.RowIterator;
import org.openoffice.xmerge.merger.merge.SheetMerge;
import org.openoffice.xmerge.merger.merge.PositionBaseRowMerge;
import org.openoffice.xmerge.merger.MergeAlgorithm;
import org.openoffice.xmerge.util.XmlUtil;
import org.openoffice.xmerge.util.Debug;
/**
* Generic small device implementation of <code>DocumentMerger</code> for
* the {@link
* org.openoffice.xmerge.converter.xml.sxc.SxcPluginFactory
* SxcPluginFactory}. Used with SXC <code>Document</code> objects.</p>
*/
public class DocumentMergerImpl implements DocumentMerger {
private ConverterCapabilities cc_;
private org.openoffice.xmerge.Document orig = null;
/**
* Constructor
*
* @param doc The original "Office" <code>Document</code>
* to merge.
* @param cc The <code>ConverterCapabilities</code>.
*/
public DocumentMergerImpl(org.openoffice.xmerge.Document doc, ConverterCapabilities cc) {
cc_ = cc;
this.orig = doc;
}
public void merge(Document modifiedDoc) throws MergeException {
SxcDocument sdoc1 = (SxcDocument)orig;
SxcDocument sdoc2 = (SxcDocument)modifiedDoc;
org.w3c.dom.Document doc1 = sdoc1.getContentDOM();
org.w3c.dom.Document doc2 = sdoc2.getContentDOM();
Element elem1 = doc1.getDocumentElement();
Element elem2 = doc2.getDocumentElement();
// get table name
NodeList workSheetList1 =
elem1.getElementsByTagName(OfficeConstants.TAG_TABLE);
NodeList workSheetList2 =
elem2.getElementsByTagName(OfficeConstants.TAG_TABLE);
int numOfWorkSheet = workSheetList1.getLength();
for (int i=0; i < numOfWorkSheet; i++) {
Node workSheet = workSheetList1.item(i);
// try to match the workSheet
Node matchingWorkSheet = matchWorkSheet(workSheet, workSheetList2);
if (matchingWorkSheet != null) {
// need to put it into a row Iterator
// use a straight comparsion algorithm then do a merge on it
Iterator i1 = new RowIterator(cc_, workSheet);
Iterator i2 = new RowIterator(cc_, matchingWorkSheet);
// find out the diff
DiffAlgorithm diffAlgo = new IteratorRowCompare();
// find out the paragrah level diffs
Difference[] diffResult = diffAlgo.computeDiffs(i1, i2);
if (Debug.isFlagSet(Debug.INFO)) {
Debug.log(Debug.INFO, "Diff Result: ");
for (int j = 0; j < diffResult.length; j++) {
Debug.log(Debug.INFO, diffResult[j].debug());
}
}
// merge back the result
NodeMergeAlgorithm rowMerger = new PositionBaseRowMerge(cc_);
MergeAlgorithm merger = new SheetMerge(cc_, rowMerger);
Iterator result = null;
merger.applyDifference(i1, i2, diffResult);
}
}
numOfWorkSheet = workSheetList2.getLength();
// for those workSheet from target don't have a matching one
// in the original workSheet list, we add it
// find out the office body node first
NodeList officeBodyList =
elem1.getElementsByTagName(OfficeConstants.TAG_OFFICE_BODY);
Node officeBody = officeBodyList.item(0);
// for each WorkSheets, try to see whether we have it or not
for (int j=0; j < numOfWorkSheet; j++) {
Node workSheet= workSheetList2.item(j);
// try to match the workSheet
//
Node matchingWorkSheet = matchWorkSheet(workSheet, workSheetList1);
// add the new WorkSheet to the original document iff match not
// found
//
if (matchingWorkSheet == null) {
Node cloneNode = XmlUtil.deepClone(officeBody, workSheet);
officeBody.appendChild(cloneNode);
}
}
}
/**
* Try to find a WorkSheet from the modified WorkSheetList that
* has a matching table name from the original WorkSheet.
*
* @param orgSheet The original WorkSheet.
* @param modSheetList The modified WorkSheet.
*
* @return The Node in modSheetList that matches the orgSheet.
*/
private Node matchWorkSheet(Node orgSheet, NodeList modSheetList) {
Node matchSheet = null;
String orgTableName = ((Element)orgSheet).getAttribute(
OfficeConstants.ATTRIBUTE_TABLE_NAME);
if (orgTableName == null)
return null;
int numOfWorkSheet = modSheetList.getLength();
String modTableName;
for (int i=0; i < numOfWorkSheet; i++) {
modTableName = ((Element)modSheetList.item(i)).getAttribute(
OfficeConstants.ATTRIBUTE_TABLE_NAME);
if (modTableName == null)
continue;
if (orgTableName.equals(modTableName)) {
matchSheet = modSheetList.item(i);
break;
}
}
return matchSheet;
}
}
|
