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annotate software/mpdl-services/mpiwg-mpdl-lt/src/de/mpg/mpiwg/berlin/mpdl/lt/morph/db/DBMorphHandler.java @ 23:e845310098ba

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diverse Korrekturen
author Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
date Tue, 27 Nov 2012 12:35:19 +0100
parents 4a3641ae14d2
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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19
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
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1 package de.mpg.mpiwg.berlin.mpdl.lt.morph.db;
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2
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3 import java.io.IOException;
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4 import java.io.Reader;
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5 import java.io.StringReader;
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6 import java.io.UnsupportedEncodingException;
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7 import java.util.ArrayList;
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8
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9 import org.xml.sax.InputSource;
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10 import org.xml.sax.SAXException;
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11 import org.xml.sax.XMLReader;
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12
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13 import com.sleepycat.je.Cursor;
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14 import com.sleepycat.je.Database;
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15 import com.sleepycat.je.DatabaseEntry;
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16 import com.sleepycat.je.DatabaseException;
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17 import com.sleepycat.je.LockMode;
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18 import com.sleepycat.je.OperationStatus;
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19 import com.sun.org.apache.xerces.internal.parsers.SAXParser;
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20
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21 import de.mpg.mpiwg.berlin.mpdl.exception.ApplicationException;
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22 import de.mpg.mpiwg.berlin.mpdl.lt.general.Language;
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23 import de.mpg.mpiwg.berlin.mpdl.lt.morph.app.Form;
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24 import de.mpg.mpiwg.berlin.mpdl.lt.morph.app.Lemma;
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25 import de.mpg.mpiwg.berlin.mpdl.lt.morph.app.SimpleMorphContentHandler;
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26
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27 public class DBMorphHandler {
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28 private String dbDirectory;
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29 private DbEnvMorph morphDbEnv;
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30
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31 public DBMorphHandler(String dbDir) {
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32 this.dbDirectory = dbDir;
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33 }
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34
23
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35 public void startReadOnly() throws ApplicationException {
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36 morphDbEnv = new DbEnvMorph();
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37 morphDbEnv.setDataDir(dbDirectory);
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38 morphDbEnv.initReadOnly(); // open databases in read only mode
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39 }
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40
19
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41 public void start() throws ApplicationException {
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42 morphDbEnv = new DbEnvMorph();
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43 morphDbEnv.setDataDir(dbDirectory);
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44 morphDbEnv.init(); // open databases in read/write mode
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45 }
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46
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47 public void openDatabases() throws ApplicationException {
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48 morphDbEnv.openDatabases();
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49 }
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50
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51 public void closeDatabases() throws ApplicationException {
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52 morphDbEnv.close();
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53 }
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54
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55 public void deleteMorphData() throws ApplicationException {
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56 morphDbEnv.removeDatabases();
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57 }
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58
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59 public long getSize() throws ApplicationException {
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60 long size = 0;
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61 try {
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62 Database formDB = morphDbEnv.getFormDB();
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63 size = formDB.count();
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64 } catch (DatabaseException e) {
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65 throw new ApplicationException(e);
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66 }
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67 return size;
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68 }
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70
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71 public void writeFormLemma(Form form, Lemma lemma) throws ApplicationException {
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72 try {
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73 String lang = Language.getInstance().getLanguageId(form.getLanguage());
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74 String keyStr = lang + "###" + form.getFormName();
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75 String valueStr = lemma.getXmlString();
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76 DatabaseEntry dbEntryKey = new DatabaseEntry(keyStr.getBytes("utf-8"));
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77 DatabaseEntry dbEntryValue = new DatabaseEntry(valueStr.getBytes("utf-8"));
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78 Database formDB = morphDbEnv.getFormDB();
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79 formDB.put(null, dbEntryKey, dbEntryValue);
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80 } catch (DatabaseException e) {
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81 throw new ApplicationException(e);
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82 } catch (UnsupportedEncodingException e) {
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83 throw new ApplicationException(e);
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84 }
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85 }
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86
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87 public void writeLemmaForm(Lemma lemma, Form form) throws ApplicationException {
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88 try {
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89 String lang = Language.getInstance().getLanguageId(lemma.getLanguage());
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90 String keyStr = lang + "###" + lemma.getLemmaName();
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91 String valueStr = form.getXmlString();
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92 DatabaseEntry dbEntryKey = new DatabaseEntry(keyStr.getBytes("utf-8"));
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93 DatabaseEntry dbEntryValue = new DatabaseEntry(valueStr.getBytes("utf-8"));
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94 Database lemmaDB = morphDbEnv.getLemmaDB();
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95 lemmaDB.put(null, dbEntryKey, dbEntryValue);
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96 } catch (DatabaseException e) {
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97 throw new ApplicationException(e);
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98 } catch (UnsupportedEncodingException e) {
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99 throw new ApplicationException(e);
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100 }
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101 }
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102
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103 public void deleteLemma(Lemma lemma) throws ApplicationException {
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104 try {
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105 String lang = Language.getInstance().getLanguageId(lemma.getLanguage());
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106 String keyStr = lang + "###" + lemma.getLemmaName();
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107 DatabaseEntry dbEntryKey = new DatabaseEntry(keyStr.getBytes("utf-8"));
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108 Database lemmaDB = morphDbEnv.getLemmaDB();
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109 lemmaDB.delete(null, dbEntryKey);
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110 } catch (DatabaseException e) {
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111 throw new ApplicationException(e);
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112 } catch (UnsupportedEncodingException e) {
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113 throw new ApplicationException(e);
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114 }
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115 }
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116
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117 public void deleteForm(Form form) throws ApplicationException {
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118 try {
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119 String lang = Language.getInstance().getLanguageId(form.getLanguage());
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120 String keyStr = lang + "###" + form.getFormName();
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121 DatabaseEntry dbEntryKey = new DatabaseEntry(keyStr.getBytes("utf-8"));
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122 Database formDB = morphDbEnv.getFormDB();
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123 formDB.delete(null, dbEntryKey);
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124 } catch (DatabaseException e) {
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125 throw new ApplicationException(e);
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126 } catch (UnsupportedEncodingException e) {
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127 throw new ApplicationException(e);
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128 }
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129 }
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130
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131 public ArrayList<Form> readForms(String language, String lemmaName) throws ApplicationException {
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132 ArrayList<Form> retForms = new ArrayList<Form>();
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133 String lang = Language.getInstance().getLanguageId(language);
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134 String hashKey = lang + "###" + lemmaName;
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135 try {
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136 Database lemmaDB = morphDbEnv.getLemmaDB();
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137 Cursor cursor = lemmaDB.openCursor(null, null);
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138 byte[] bHashKey = hashKey.getBytes("utf-8");
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diff changeset
139 DatabaseEntry dbEntryKey = new DatabaseEntry(bHashKey);
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parents:
diff changeset
140 DatabaseEntry foundFormValue = new DatabaseEntry();
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parents:
diff changeset
141 OperationStatus operationStatus = cursor.getSearchKey(dbEntryKey, foundFormValue, LockMode.DEFAULT);
23
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parents: 19
diff changeset
142 StringBuilder formsXmlString = new StringBuilder();
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143 formsXmlString.append("<forms>");
19
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diff changeset
144 while (operationStatus == OperationStatus.SUCCESS) {
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145 byte[] foundFormValueBytes = foundFormValue.getData();
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146 String foundFormValueStr = new String(foundFormValueBytes, "utf-8");
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parents: 19
diff changeset
147 formsXmlString.append(foundFormValueStr);
19
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148 operationStatus = cursor.getNextDup(dbEntryKey, foundFormValue, LockMode.DEFAULT);
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149 }
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150 formsXmlString.append("</forms>");
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151 retForms = parseXmlFormsString(formsXmlString.toString());
19
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152 cursor.close();
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153 } catch (DatabaseException e) {
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154 throw new ApplicationException(e);
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
155 } catch (UnsupportedEncodingException e) {
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diff changeset
156 throw new ApplicationException(e);
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parents:
diff changeset
157 }
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158 return retForms;
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
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159 }
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
160
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
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diff changeset
161 public ArrayList<Lemma> readLemmas(String language, String formName) throws ApplicationException {
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diff changeset
162 ArrayList<Lemma> retLemmas = new ArrayList<Lemma>();
19
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diff changeset
163 String lang = Language.getInstance().getLanguageId(language);
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diff changeset
164 String hashKey = lang + "###" + formName;
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parents:
diff changeset
165 try {
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parents:
diff changeset
166 Database formDB = morphDbEnv.getFormDB();
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parents:
diff changeset
167 Cursor cursor = formDB.openCursor(null, null);
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parents:
diff changeset
168 byte[] bHashKey = hashKey.getBytes("utf-8");
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parents:
diff changeset
169 DatabaseEntry dbEntryKey = new DatabaseEntry(bHashKey);
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
170 DatabaseEntry foundLemmaValue = new DatabaseEntry();
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
171 OperationStatus operationStatus = cursor.getSearchKey(dbEntryKey, foundLemmaValue, LockMode.DEFAULT);
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parents:
diff changeset
172 while (operationStatus == OperationStatus.SUCCESS) {
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
173 byte[] foundLemmaValueBytes = foundLemmaValue.getData();
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
174 String foundLemmaValueStr = new String(foundLemmaValueBytes, "utf-8");
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
175 Lemma l = parseXmlLemmaString(foundLemmaValueStr);
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parents: 19
diff changeset
176 retLemmas.add(l);
19
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177 operationStatus = cursor.getNextDup(dbEntryKey, foundLemmaValue, LockMode.DEFAULT);
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parents:
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178 }
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parents:
diff changeset
179 cursor.close();
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parents:
diff changeset
180 } catch (DatabaseException e) {
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parents:
diff changeset
181 throw new ApplicationException(e);
4a3641ae14d2 Erstellung
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parents:
diff changeset
182 } catch (UnsupportedEncodingException e) {
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parents:
diff changeset
183 throw new ApplicationException(e);
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parents:
diff changeset
184 }
23
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parents: 19
diff changeset
185 return retLemmas;
19
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parents:
diff changeset
186 }
4a3641ae14d2 Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
187
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diff changeset
188 private ArrayList<Form> parseXmlFormsString(String xmlString) throws ApplicationException {
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diff changeset
189 ArrayList<Form> forms = null;
19
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
190 try {
4a3641ae14d2 Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
191 XMLReader xmlParser = new SAXParser();
4a3641ae14d2 Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
192 SimpleMorphContentHandler morphContentHandler = new SimpleMorphContentHandler();
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
193 xmlParser.setContentHandler(morphContentHandler);
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
194 Reader reader = new StringReader(xmlString);
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parents:
diff changeset
195 InputSource input = new InputSource(reader);
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parents:
diff changeset
196 xmlParser.parse(input);
23
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parents: 19
diff changeset
197 forms = morphContentHandler.getForms();
19
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parents:
diff changeset
198 } catch (SAXException e) {
4a3641ae14d2 Erstellung
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parents:
diff changeset
199 throw new ApplicationException(e);
4a3641ae14d2 Erstellung
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parents:
diff changeset
200 } catch (IOException e) {
4a3641ae14d2 Erstellung
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parents:
diff changeset
201 throw new ApplicationException(e);
4a3641ae14d2 Erstellung
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parents:
diff changeset
202 }
23
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parents: 19
diff changeset
203 return forms;
19
4a3641ae14d2 Erstellung
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parents:
diff changeset
204 }
4a3641ae14d2 Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
205
4a3641ae14d2 Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
206 private Lemma parseXmlLemmaString(String xmlString) throws ApplicationException {
4a3641ae14d2 Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
207 Lemma lemma = null;
4a3641ae14d2 Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
208 try {
4a3641ae14d2 Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
209 XMLReader xmlParser = new SAXParser();
4a3641ae14d2 Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
210 SimpleMorphContentHandler morphContentHandler = new SimpleMorphContentHandler();
4a3641ae14d2 Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
211 xmlParser.setContentHandler(morphContentHandler);
4a3641ae14d2 Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
212 Reader reader = new StringReader(xmlString);
4a3641ae14d2 Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
213 InputSource input = new InputSource(reader);
4a3641ae14d2 Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
214 xmlParser.parse(input);
4a3641ae14d2 Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
215 lemma = morphContentHandler.getLemma();
4a3641ae14d2 Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
216 } catch (SAXException e) {
4a3641ae14d2 Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
217 throw new ApplicationException(e);
4a3641ae14d2 Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
218 } catch (IOException e) {
4a3641ae14d2 Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
219 throw new ApplicationException(e);
4a3641ae14d2 Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
220 }
4a3641ae14d2 Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
221 return lemma;
4a3641ae14d2 Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
222 }
4a3641ae14d2 Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
223
4a3641ae14d2 Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
224 }