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view software/eXist/mpdl-modules/src/de/mpg/mpiwg/berlin/mpdl/lt/doc/regularization/DbEnvRegularization.java @ 0:408254cf2f1d
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author | Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de> |
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date | Wed, 24 Nov 2010 17:24:23 +0100 |
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package de.mpg.mpiwg.berlin.mpdl.lt.doc.regularization; import java.io.File; import com.sleepycat.je.Database; import com.sleepycat.je.DatabaseConfig; import com.sleepycat.je.DatabaseException; import com.sleepycat.je.Environment; import com.sleepycat.je.EnvironmentConfig; import de.mpg.mpiwg.berlin.mpdl.exception.ApplicationException; public class DbEnvRegularization { private String dataDir; private File envPath; private Environment env; private EnvironmentConfig envConfig; private DatabaseConfig dbConfig; private Database origDB; private Database normDB; public DbEnvRegularization() { } public void setDataDir(String dataDir) { this.dataDir = dataDir; } public void init() throws ApplicationException { try { envConfig = new EnvironmentConfig(); dbConfig = new DatabaseConfig(); envConfig.setReadOnly(false); dbConfig.setReadOnly(false); envConfig.setAllowCreate(true); dbConfig.setAllowCreate(true); envConfig.setTransactional(true); dbConfig.setTransactional(true); // allow duplicates for keys dbConfig.setSortedDuplicates(true); envPath = new File(dataDir); env = new Environment(envPath, envConfig); } catch (DatabaseException e) { throw new ApplicationException(e); } } public void openDatabases() throws ApplicationException { try { // open databases (and create them if they do not exist) origDB = env.openDatabase(null, "OrigDB", dbConfig); normDB = env.openDatabase(null, "NormDB", dbConfig); } catch (DatabaseException e) { throw new ApplicationException(e); } } public void removeDatabases() throws ApplicationException { try { if (origDB != null) origDB.close(); if (normDB != null) normDB.close(); env.removeDatabase(null, "OrigDB"); env.removeDatabase(null, "NormDB"); origDB = null; normDB = null; } catch (DatabaseException e) { throw new ApplicationException(e); } } public Environment getEnv() { return env; } public Database getNormDB() { return normDB; } public Database getOrigDB() { return origDB; } public void close() throws ApplicationException { if (env != null) { try { if (origDB != null) origDB.close(); if (normDB != null) normDB.close(); if (env != null) env.close(); } catch (DatabaseException e) { throw new ApplicationException(e); } } } }