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annotate software/mpdl-services/mpiwg-mpdl-lt/src/de/mpg/mpiwg/berlin/mpdl/lt/morph/db/DbEnvMorphSup.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
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19
4a3641ae14d2 Erstellung
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.File;
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4 import java.util.HashMap;
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5
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6 import com.sleepycat.je.Database;
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7 import com.sleepycat.je.DatabaseConfig;
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
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8 import com.sleepycat.je.DatabaseException;
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
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9 import com.sleepycat.je.Environment;
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
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10 import com.sleepycat.je.EnvironmentConfig;
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11
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12 import de.mpg.mpiwg.berlin.mpdl.exception.ApplicationException;
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13
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
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14 public class DbEnvMorphSup {
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15 private String dataDir;
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16 private File envPath;
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17 private Environment env;
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18 private EnvironmentConfig envConfig;
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19 private DatabaseConfig dbConfig;
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20 private HashMap<String, Database> morphSupDBs = new HashMap<String, Database>();
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21
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22 public DbEnvMorphSup() {
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23 }
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24
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
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25 public void setDataDir(String dataDir) {
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26 this.dataDir = dataDir;
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27 }
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28
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29 public void initReadOnly() throws ApplicationException {
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30 try {
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31 envConfig = new EnvironmentConfig();
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32 dbConfig = new DatabaseConfig();
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33 envPath = new File(dataDir);
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34 env = new Environment(envPath, envConfig);
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35 } catch (DatabaseException e) {
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36 throw new ApplicationException(e);
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37 }
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38 }
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39
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40 public void initReadWrite() throws ApplicationException {
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41 try {
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42 envConfig = new EnvironmentConfig();
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43 dbConfig = new DatabaseConfig();
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44 envConfig.setReadOnly(false);
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45 dbConfig.setReadOnly(false);
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46 envConfig.setAllowCreate(true);
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47 dbConfig.setAllowCreate(true);
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48 envConfig.setTransactional(true);
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49 dbConfig.setTransactional(true);
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50 envPath = new File(dataDir);
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51 env = new Environment(envPath, envConfig);
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52 } catch (DatabaseException e) {
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53 throw new ApplicationException(e);
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54 }
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55 }
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56
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57 public void openDatabase(String morphSupName) throws ApplicationException {
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58 try {
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59 Database lexDB = morphSupDBs.get(morphSupName);
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60 if (lexDB == null) {
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61 Database morphSupDB = env.openDatabase(null, morphSupName + ".db", dbConfig);
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62 morphSupDBs.put(morphSupName, morphSupDB);
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63 }
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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 }
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68
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69 public void closeDatabase(String morphSupName) throws ApplicationException {
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70 try {
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71 if (morphSupDBs != null) {
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72 Database morphSupDB = morphSupDBs.get(morphSupName);
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73 if (morphSupDB != null)
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74 morphSupDB.close();
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75 }
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76 } catch (DatabaseException e) {
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77 throw new ApplicationException(e);
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78 }
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79 }
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80
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81 public Environment getEnv() {
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82 return env;
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83 }
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84
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85 public Database getMorphSupDB(String morphSupName) {
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86 Database morphSupDB = morphSupDBs.get(morphSupName);
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87 return morphSupDB;
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88 }
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89
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90 public void close() throws ApplicationException {
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91 if (env != null) {
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92 try {
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93 if (env != null)
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94 env.close();
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95 } catch (DatabaseException e) {
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96 throw new ApplicationException(e);
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97 }
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98 }
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99 }
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100 }
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101