// Copyright (c) 2003-2014, Jodd Team (jodd.org). All Rights Reserved.
package jodd.db.jtx;
import jodd.jtx.JtxResourceManager;
import jodd.jtx.JtxTransactionMode;
import jodd.jtx.JtxException;
import jodd.db.connection.ConnectionProvider;
import jodd.db.DbSession;
import jodd.log.Logger;
import jodd.log.LoggerFactory;
/**
* Database {@link jodd.jtx.JtxResourceManager} manages life-cycle of {@link jodd.db.DbSession} resources.
* Also acts as an adapter of resource object (of any type) and JTX engine.
* <p>
* Transaction resources may be of any type. The only thing what is important is that resource <b>must</b> be
* aware of its transactional state - is it in no-transactional mode (i.e. auto-commit), or under the transaction.
*/
public class DbJtxResourceManager implements JtxResourceManager<DbSession> {
private static final Logger log = LoggerFactory.getLogger(DbJtxResourceManager.class);
protected final ConnectionProvider connectionProvider;
/**
* Creates resource manager.
*/
public DbJtxResourceManager(ConnectionProvider connectionProvider) {
this.connectionProvider = connectionProvider;
}
/**
* {@inheritDoc}
*/
public Class<DbSession> getResourceType() {
return DbSession.class;
}
// ---------------------------------------------------------------- resource manager
/**
* {@inheritDoc}
*/
public DbSession beginTransaction(JtxTransactionMode jtxMode, boolean active) {
DbSession session = new DbSession(connectionProvider);
if (active) {
log.debug("begin jtx");
session.beginTransaction(JtxDbUtil.convertToDbMode(jtxMode));
}
return session;
}
/**
* {@inheritDoc}
*/
public void commitTransaction(DbSession resource) {
if (resource.isTransactionActive()) {
log.debug("commit jtx");
resource.commitTransaction();
}
resource.closeSession();
}
/**
* {@inheritDoc}
*/
public void rollbackTransaction(DbSession resource) {
try {
if (resource.isTransactionActive()) {
log.debug("rollback tx");
resource.rollbackTransaction();
}
} catch (Exception ex) {
throw new JtxException(ex);
} finally {
resource.closeSession();
}
}
/**
* {@inheritDoc}
*/
public void close() {
connectionProvider.close();
}
}