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annotate software/eXist/mpdl-modules/src/org/exist/xquery/modules/mpdltext/Dictionarize.java @ 0:408254cf2f1d

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Erstellung
author Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
date Wed, 24 Nov 2010 17:24:23 +0100
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children 5df60f24e997
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
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1 /*
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2 * eXist Open Source Native XML Database: Extension module
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
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3 * Copyright (C) 2008 Josef Willenborg
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4 * jwillenborg@mpiwg-berlin.mpg.de
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5 * http://www.mpiwg-berlin.mpg.de
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6 *
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7 * This program is free software; you can redistribute it and/or
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
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8 * modify it under the terms of the GNU Lesser General Public License
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
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9 * as published by the Free Software Foundation; either version 2
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10 * of the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful,
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13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 * GNU Lesser General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Lesser General Public License
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18 * along with this program; if not, write to the Free Software
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19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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20 *
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21 * $Id: TextModule.java $
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22 */
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23 package org.exist.xquery.modules.mpdltext;
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24
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25 import java.io.IOException;
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26 import java.io.Reader;
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27 import java.io.StringReader;
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28
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29 import org.exist.dom.QName;
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30 import org.exist.xquery.BasicFunction;
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31 import org.exist.xquery.Cardinality;
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32 import org.exist.xquery.FunctionSignature;
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33 import org.exist.xquery.XPathException;
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34 import org.exist.xquery.XQueryContext;
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35 import org.exist.xquery.value.Sequence;
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36 import org.exist.xquery.value.SequenceType;
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37 import org.exist.xquery.value.StringValue;
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38 import org.exist.xquery.value.Type;
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39 import org.exist.xquery.value.ValueSequence;
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40 import org.xml.sax.InputSource;
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41 import org.xml.sax.SAXException;
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42 import org.xml.sax.XMLReader;
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43
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44 import com.sun.org.apache.xerces.internal.parsers.SAXParser;
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45
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46 import de.mpg.mpiwg.berlin.mpdl.exception.ApplicationException;
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47 import de.mpg.mpiwg.berlin.mpdl.lt.doc.DictionarizerContentHandler;
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48
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49 /**
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50 * @author Josef Willenborg (jwillenborg@mpiwg-berlin.mpg.de)
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51 */
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52 public class Dictionarize extends BasicFunction {
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53
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54 public final static FunctionSignature signature =
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55 new FunctionSignature(
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56 new QName("dictionarize", MPDLTextModule.NAMESPACE_URI, MPDLTextModule.PREFIX),
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57 "A function which dictionarize the given xml fragment string of the given language." +
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58 "Result is xml fragment which contains the original xml fragment enriched by " +
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59 "a word tag for each word which contains attributes for the lemma and pollux dictionary.",
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60 new SequenceType[] { new SequenceType(Type.STRING, Cardinality.EXACTLY_ONE),
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61 new SequenceType(Type.STRING, Cardinality.EXACTLY_ONE)},
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62 new SequenceType(Type.STRING, Cardinality.EXACTLY_ONE));
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63
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64 public Dictionarize(XQueryContext context) {
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65 super(context, signature);
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66 }
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67
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68 public Sequence eval(Sequence[] args, Sequence contextSequence) throws XPathException {
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69 Sequence xmlFragmentSeq = args[0];
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70 Sequence languageSeq = args[1];
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71 String xmlFragment = "";
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72 String language = "";
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73 if (xmlFragmentSeq.isEmpty() || languageSeq.isEmpty())
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74 return Sequence.EMPTY_SEQUENCE;
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75 xmlFragment = xmlFragmentSeq.getStringValue();
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76 language = languageSeq.getStringValue();
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77 String outputXmlFragment = null;
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78 try {
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79 DictionarizerContentHandler dictContentHandler = new DictionarizerContentHandler(language);
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80 XMLReader xmlParser = new SAXParser();
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81 xmlParser.setContentHandler(dictContentHandler);
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82 Reader stringReaderXmlFragment = new StringReader(xmlFragment);
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83 InputSource input = new InputSource(stringReaderXmlFragment);
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84 xmlParser.parse(input);
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85 outputXmlFragment = dictContentHandler.getXmlFragment();
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86 } catch (ApplicationException e) {
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87 throw new XPathException(e);
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88 } catch (IOException e) {
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89 throw new XPathException(e);
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90 } catch (SAXException e) {
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91 throw new XPathException(e);
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92 }
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93 ValueSequence result = new ValueSequence();
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94 result.add(new StringValue(outputXmlFragment));
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95 return result;
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96 }
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97 }