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annotate software/mpdl-services/mpiwg-mpdl-lt/src/de/mpg/mpiwg/berlin/mpdl/lt/text/reg/DBRegularizationHandler.java @ 19:4a3641ae14d2

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Erstellung
author Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
date Wed, 09 Nov 2011 15:32:05 +0100
parents
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.text.reg;
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2
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3 import java.io.UnsupportedEncodingException;
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4 import java.util.ArrayList;
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5
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6 import com.sleepycat.je.Cursor;
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7 import com.sleepycat.je.Database;
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8 import com.sleepycat.je.DatabaseEntry;
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9 import com.sleepycat.je.DatabaseException;
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10 import com.sleepycat.je.LockMode;
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11 import com.sleepycat.je.OperationStatus;
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12
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13 import de.mpg.mpiwg.berlin.mpdl.exception.ApplicationException;
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14 import de.mpg.mpiwg.berlin.mpdl.lt.general.Language;
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15
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16 public class DBRegularizationHandler {
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17 private String dbDirectory;
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18 private DbEnvRegularization regDbEnv;
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19
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20 public DBRegularizationHandler(String dbDir) {
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21 this.dbDirectory = dbDir;
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22 }
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23
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24 public void start() throws ApplicationException {
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25 regDbEnv = new DbEnvRegularization();
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26 regDbEnv.setDataDir(dbDirectory);
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27 regDbEnv.init(); // open databases in read/write mode
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28 }
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29
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30 public void openDatabases() throws ApplicationException {
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31 regDbEnv.openDatabases();
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32 }
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33
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34 public void closeDatabases() throws ApplicationException {
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35 regDbEnv.close();
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36 }
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37
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38 public void deleteData() throws ApplicationException {
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39 regDbEnv.removeDatabases();
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40 }
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41
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42 public void writeOrigReg(Regularization reg) throws ApplicationException {
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43 try {
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44 String language = Language.getInstance().getLanguageId(reg.getLanguage());
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45 String keyStr = language + "###" + reg.getOrig();
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46 String valueStr = reg.getXmlString();
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47 DatabaseEntry dbEntryKey = new DatabaseEntry(keyStr.getBytes("utf-8"));
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48 DatabaseEntry dbEntryValue = new DatabaseEntry(valueStr.getBytes("utf-8"));
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49 Database origDB = regDbEnv.getOrigDB();
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50 origDB.put(null, dbEntryKey, dbEntryValue);
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51 } catch (DatabaseException e) {
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52 throw new ApplicationException(e);
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53 } catch (UnsupportedEncodingException e) {
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54 throw new ApplicationException(e);
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55 }
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56 }
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57
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58 public void writeNormReg(Regularization reg) throws ApplicationException {
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59 try {
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60 String language = Language.getInstance().getLanguageId(reg.getLanguage());
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61 String keyStr = language + "###" + reg.getNorm();
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62 String valueStr = reg.getXmlString();
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63 DatabaseEntry dbEntryKey = new DatabaseEntry(keyStr.getBytes("utf-8"));
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64 DatabaseEntry dbEntryValue = new DatabaseEntry(valueStr.getBytes("utf-8"));
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65 Database normDB = regDbEnv.getNormDB();
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66 normDB.put(null, dbEntryKey, dbEntryValue);
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67 } catch (DatabaseException e) {
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68 throw new ApplicationException(e);
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69 } catch (UnsupportedEncodingException e) {
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70 throw new ApplicationException(e);
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71 }
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72 }
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73
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74 public void deleteReg(Regularization reg) throws ApplicationException {
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75 try {
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76 String language = Language.getInstance().getLanguageId(reg.getLanguage());
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77 String keyStrOrig = language + "###" + reg.getOrig();
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78 DatabaseEntry dbEntryKey = new DatabaseEntry(keyStrOrig.getBytes("utf-8"));
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79 Database origDB = regDbEnv.getOrigDB();
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80 origDB.delete(null, dbEntryKey);
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81 String keyStrNorm = reg.getLanguage() + "###" + reg.getNorm();
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82 dbEntryKey = new DatabaseEntry(keyStrNorm.getBytes("utf-8"));
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83 Database normDB = regDbEnv.getNormDB();
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84 normDB.delete(null, dbEntryKey);
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85 } catch (DatabaseException e) {
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86 throw new ApplicationException(e);
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87 } catch (UnsupportedEncodingException e) {
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88 throw new ApplicationException(e);
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89 }
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90 }
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91
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92 public ArrayList<Regularization> readRegsByOrig(String lang, String orig) throws ApplicationException {
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93 String language = Language.getInstance().getLanguageId(lang);
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94 ArrayList<Regularization> retRegs = new ArrayList<Regularization>();
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95 String hashKey = language + "###" + orig;
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96 try {
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97 Database origDB = regDbEnv.getOrigDB();
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98 Cursor cursor = origDB.openCursor(null, null);
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99 byte[] bHashKey = hashKey.getBytes("utf-8");
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100 DatabaseEntry dbEntryKey = new DatabaseEntry(bHashKey);
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101 DatabaseEntry foundValue = new DatabaseEntry();
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102 OperationStatus operationStatus = cursor.getSearchKey(dbEntryKey, foundValue, LockMode.DEFAULT);
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103 while (operationStatus == OperationStatus.SUCCESS) {
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104 byte[] foundValueBytes = foundValue.getData();
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105 String foundValueStr = new String(foundValueBytes, "utf-8");
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106 Regularization reg = Regularization.getInstance(foundValueStr);
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107 retRegs.add(reg);
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108 operationStatus = cursor.getNextDup(dbEntryKey, foundValue, LockMode.DEFAULT);
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109 }
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110 cursor.close();
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111 } catch (DatabaseException e) {
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112 throw new ApplicationException(e);
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113 } catch (UnsupportedEncodingException e) {
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114 throw new ApplicationException(e);
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115 }
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116 return retRegs;
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117 }
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118
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119 public ArrayList<Regularization> readRegsByNorm(String lang, String norm) throws ApplicationException {
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120 String language = Language.getInstance().getLanguageId(lang);
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121 ArrayList<Regularization> retRegs = new ArrayList<Regularization>();
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122 String hashKey = language + "###" + norm;
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123 try {
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124 Database normDB = regDbEnv.getNormDB();
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125 Cursor cursor = normDB.openCursor(null, null);
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126 byte[] bHashKey = hashKey.getBytes("utf-8");
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127 DatabaseEntry dbEntryKey = new DatabaseEntry(bHashKey);
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128 DatabaseEntry foundValue = new DatabaseEntry();
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129 OperationStatus operationStatus = cursor.getSearchKey(dbEntryKey, foundValue, LockMode.DEFAULT);
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130 while (operationStatus == OperationStatus.SUCCESS) {
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131 byte[] foundValueBytes = foundValue.getData();
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132 String foundValueStr = new String(foundValueBytes, "utf-8");
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133 Regularization reg = Regularization.getInstance(foundValueStr);
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134 retRegs.add(reg);
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
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135 operationStatus = cursor.getNextDup(dbEntryKey, foundValue, LockMode.DEFAULT);
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
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136 }
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
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137 cursor.close();
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
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138 } catch (DatabaseException e) {
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
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139 throw new ApplicationException(e);
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
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140 } catch (UnsupportedEncodingException e) {
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
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141 throw new ApplicationException(e);
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
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142 }
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
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143 return retRegs;
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
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144 }
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
145
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
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146 }