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Diffstat (limited to 'xmerge/source/xmerge/java/org/openoffice/xmerge/converter/xml/sxc/DocumentMergerImpl.java')
| -rw-r--r-- | xmerge/source/xmerge/java/org/openoffice/xmerge/converter/xml/sxc/DocumentMergerImpl.java | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/xmerge/source/xmerge/java/org/openoffice/xmerge/converter/xml/sxc/DocumentMergerImpl.java b/xmerge/source/xmerge/java/org/openoffice/xmerge/converter/xml/sxc/DocumentMergerImpl.java new file mode 100644 index 000000000000..2fa5f22303b2 --- /dev/null +++ b/xmerge/source/xmerge/java/org/openoffice/xmerge/converter/xml/sxc/DocumentMergerImpl.java @@ -0,0 +1,198 @@ +/************************************************************************* + * + * 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.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; + } +} + |