package org.exist.storage.index;
import org.exist.storage.BrokerPool;
import org.exist.storage.DefaultCacheManager;
import org.exist.storage.btree.BTree;
import org.exist.storage.btree.DBException;
import org.exist.storage.lock.Lock;
import org.exist.storage.lock.ReentrantReadWriteLock;
import java.io.File;
public class BTreeStore extends BTree {
public final static short FILE_FORMAT_VERSION_ID = 2;
protected Lock lock = null;
public BTreeStore(BrokerPool pool, byte fileId, boolean transactional, File file, DefaultCacheManager cacheManager, double growthThreshold) throws DBException {
super(pool, fileId, transactional, cacheManager, file, growthThreshold);
lock = new ReentrantReadWriteLock(file.getName());
if(exists()) {
open(FILE_FORMAT_VERSION_ID);
} else {
if (LOG.isDebugEnabled()) {
LOG.debug("Creating data file: " + getFile().getName());
}
create((short)-1);
}
setSplitFactor(0.7);
}
@Override
public Lock getLock() {
return lock;
}
public short getFileVersion() {
return FILE_FORMAT_VERSION_ID;
}
}