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comparison software/eXist/mpdl-modules/src/de/mpg/mpiwg/berlin/mpdl/lt/morph/db/DbEnvMorph.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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-1:000000000000 0:408254cf2f1d
1 package de.mpg.mpiwg.berlin.mpdl.lt.morph.db;
2
3 import java.io.File;
4
5 import com.sleepycat.je.Database;
6 import com.sleepycat.je.DatabaseConfig;
7 import com.sleepycat.je.DatabaseException;
8 import com.sleepycat.je.Environment;
9 import com.sleepycat.je.EnvironmentConfig;
10
11 import de.mpg.mpiwg.berlin.mpdl.exception.ApplicationException;
12
13 public class DbEnvMorph {
14 private String dataDir;
15 private File envPath;
16 private Environment env;
17 private EnvironmentConfig envConfig;
18 private DatabaseConfig dbConfig;
19 private Database lemmaDB;
20 private Database formDB;
21
22 public DbEnvMorph() {
23 }
24
25 public void setDataDir(String dataDir) {
26 this.dataDir = dataDir;
27 }
28
29 public void init() throws ApplicationException {
30 try {
31 envConfig = new EnvironmentConfig();
32 dbConfig = new DatabaseConfig();
33 envConfig.setReadOnly(false);
34 dbConfig.setReadOnly(false);
35 envConfig.setAllowCreate(true);
36 dbConfig.setAllowCreate(true);
37 envConfig.setTransactional(true);
38 dbConfig.setTransactional(true);
39 // allow duplicates for keys
40 dbConfig.setSortedDuplicates(true);
41 envPath = new File(dataDir);
42 env = new Environment(envPath, envConfig);
43 } catch (DatabaseException e) {
44 throw new ApplicationException(e);
45 }
46 }
47
48 public void openDatabases() throws ApplicationException {
49 try {
50 // open databases (and create them if they do not exist)
51 lemmaDB = env.openDatabase(null, "LemmaDB", dbConfig);
52 formDB = env.openDatabase(null, "FormDB", dbConfig);
53 } catch (DatabaseException e) {
54 throw new ApplicationException(e);
55 }
56 }
57
58 public void removeDatabases() throws ApplicationException {
59 try {
60 if (formDB != null)
61 formDB.close();
62 if (lemmaDB != null)
63 lemmaDB.close();
64 env.removeDatabase(null, "LemmaDB");
65 env.removeDatabase(null, "FormDB");
66 formDB = null;
67 lemmaDB = null;
68 /*
69 boolean bla = true;
70 env.truncateDatabase(null, "LemmaDB", bla);
71 env.truncateDatabase(null, "FormDB", bla);
72 */
73 } catch (DatabaseException e) {
74 throw new ApplicationException(e);
75 }
76 }
77
78 public Environment getEnv() {
79 return env;
80 }
81
82 public Database getLemmaDB() {
83 return lemmaDB;
84 }
85
86 public Database getFormDB() {
87 return formDB;
88 }
89
90 public void close() throws ApplicationException {
91 if (env != null) {
92 try {
93 if (formDB != null)
94 formDB.close();
95 if (lemmaDB != null)
96 lemmaDB.close();
97 if (env != null)
98 env.close();
99 } catch (DatabaseException e) {
100 throw new ApplicationException(e);
101 }
102 }
103 }
104 }
105