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comparison software/eXist/mpdl-modules/src/de/mpg/mpiwg/berlin/mpdl/lt/doc/regularization/DbEnvRegularization.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.doc.regularization;
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 DbEnvRegularization {
14 private String dataDir;
15 private File envPath;
16 private Environment env;
17 private EnvironmentConfig envConfig;
18 private DatabaseConfig dbConfig;
19 private Database origDB;
20 private Database normDB;
21
22 public DbEnvRegularization() {
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 origDB = env.openDatabase(null, "OrigDB", dbConfig);
52 normDB = env.openDatabase(null, "NormDB", dbConfig);
53 } catch (DatabaseException e) {
54 throw new ApplicationException(e);
55 }
56 }
57
58 public void removeDatabases() throws ApplicationException {
59 try {
60 if (origDB != null)
61 origDB.close();
62 if (normDB != null)
63 normDB.close();
64 env.removeDatabase(null, "OrigDB");
65 env.removeDatabase(null, "NormDB");
66 origDB = null;
67 normDB = null;
68 } catch (DatabaseException e) {
69 throw new ApplicationException(e);
70 }
71 }
72
73 public Environment getEnv() {
74 return env;
75 }
76
77 public Database getNormDB() {
78 return normDB;
79 }
80
81 public Database getOrigDB() {
82 return origDB;
83 }
84
85 public void close() throws ApplicationException {
86 if (env != null) {
87 try {
88 if (origDB != null)
89 origDB.close();
90 if (normDB != null)
91 normDB.close();
92 if (env != null)
93 env.close();
94 } catch (DatabaseException e) {
95 throw new ApplicationException(e);
96 }
97 }
98 }
99 }
100