/* HeliDB -- A simple database for Java, http://www.helidb.org
* Copyright (C) 2008, 2009 Karl Gustafsson
*
* This file is a part of HeliDB.
*
* HeliDB is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* HeliDB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.helidb.impl.txn.log;
import java.util.HashMap;
import java.util.Map;
import java.util.logging.Level;
import org.entityfs.Directory;
import org.entityfs.EFile;
import org.entityfs.support.log.LogAdapterHolder;
import org.entityfs.support.log.StdOutLogAdapter;
import org.entityfs.util.Directories;
import org.helidb.Database;
import org.helidb.UnknownOrderBackendDBTester;
import org.helidb.backend.DatabaseBackend;
import org.helidb.backend.heap.HeapBackend;
import org.helidb.backend.index.bplus.BPlusTreeIndexBackend;
import org.helidb.lang.hasher.StringToLongHasher;
import org.helidb.lang.serializer.LongNullSerializer;
import org.helidb.lang.serializer.LongSerializer;
import org.helidb.lang.serializer.StringNullSerializer;
import org.helidb.lang.serializer.StringSerializer;
import org.helidb.txn.TransactionalDatabase;
import org.helidb.util.bplus.BPlusTree;
import org.helidb.util.bplus.FileBackedNodeRepository;
import org.helidb.util.bplus.LruCacheNodeRepository;
import org.helidb.util.bplus.NodeRepository;
import org.helidb.util.bplus.NumberOfRecordsNodeSizeStrategy;
import org.junit.Test;
public class LoggingTxnDbOnHeapBackendWBPlusTreeIndexTest extends AbstractLoggingTxnDbTest<Long>
{
private final Map<Database<?, ?>, EFile[]> m_dbFiles = new HashMap<Database<?, ?>, EFile[]>();
private LoggingTransactionalDatabase<String, String, Long> createDbUsingFiles(EFile f, EFile treef, EFile logf)
{
LogAdapterHolder lah = new LogAdapterHolder(new StdOutLogAdapter());
lah.setLevel(Level.SEVERE);
DatabaseBackend<String, String, Long> backend = new HeapBackend<String, String>(f, false, StringNullSerializer.INSTANCE, StringSerializer.INSTANCE, 0, 8192, lah);
NodeRepository<Long> nr = new LruCacheNodeRepository<Long, Long>(new FileBackedNodeRepository<Long, Long>(treef, false, 0, new NumberOfRecordsNodeSizeStrategy(3), true, LongNullSerializer.INSTANCE, LongSerializer.INSTANCE, 4, 8192, null, lah), 10);
BPlusTree<Long, Long> tree = new BPlusTree<Long, Long>(nr, lah);
backend = new BPlusTreeIndexBackend<String, String, Long, Long>(backend, false, tree, StringToLongHasher.INSTANCE, lah);
LoggingTransactionalDatabase<String, String, Long> res = new LoggingTransactionalDatabase<String, String, Long>(backend, logf, StringNullSerializer.INSTANCE, StringSerializer.INSTANCE, lah);
m_dbFiles.put(res, new EFile[] { f, treef, logf });
return res;
}
@Override
protected LoggingTransactionalDatabase<String, String, Long> createDatabaseWoTxnInDirectory(Directory dir)
{
EFile f = Directories.newFile(dir, "db");
EFile treef = Directories.newFile(dir, "tree");
EFile logf = Directories.newFile(dir, "log");
return createDbUsingFiles(f, treef, logf);
}
@Override
protected LoggingTransactionalDatabase<String, String, Long> createNewDatabaseUsingSameFiles(TransactionalDatabase<String, String> otherDb)
{
EFile[] files = m_dbFiles.get(otherDb);
return createDbUsingFiles(files[0], files[1], files[2]);
}
@Override
protected LoggingTransactionalDatabase<String, String, Long> createNewDatabaseUsingSameFilesButTruncateRollbackLog(TransactionalDatabase<String, String> otherDb, int howMuchToTruncate)
{
EFile[] files = m_dbFiles.get(otherDb);
return createDbUsingFiles(files[0], files[1], truncate(files[2], howMuchToTruncate));
}
@Test
public void testCursor()
{
Database<String, String> db = createDatabase();
try
{
UnknownOrderBackendDBTester.testCursor(db);
}
finally
{
tearDownDatabase(db);
}
}
@Test
public void testCursorIterator()
{
Database<String, String> db = createDatabase();
try
{
UnknownOrderBackendDBTester.testCursorIterator(db);
}
finally
{
tearDownDatabase(db);
}
}
@Test
public void testCursorBackwardsIterator()
{
Database<String, String> db = createDatabase();
try
{
UnknownOrderBackendDBTester.testCursorBackwardsIterator(db);
}
finally
{
tearDownDatabase(db);
}
}
}