package com.tesora.dve.queryplan;
/*
* #%L
* Tesora Inc.
* Database Virtualization Engine
* %%
* Copyright (C) 2011 - 2014 Tesora Inc.
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
* #L%
*/
import com.tesora.dve.common.catalog.StorageGroup;
import com.tesora.dve.db.DBResultConsumer;
import com.tesora.dve.exceptions.PEException;
import com.tesora.dve.server.connectionmanager.UserXid;
import com.tesora.dve.worker.WorkerGroup;
/**
* {@link QueryStepRollbackTransactionOperation} is a <b>QueryStep</b> operation which
* rolls back a transaction.
*
*/
public class QueryStepRollbackTransactionOperation extends QueryStepOperation {
@SuppressWarnings("unused")
private UserXid xaXid;
public QueryStepRollbackTransactionOperation(StorageGroup sg) throws PEException {
super(sg);
}
public QueryStepRollbackTransactionOperation withXAXid(UserXid id) {
this.xaXid = id;
return this;
}
@Override
public void executeSelf(ExecutionState estate, WorkerGroup wg, DBResultConsumer resultConsumer) throws PEException {
estate.getConnection().userRollbackTransaction();
resultConsumer.rollback();
}
@Override
public boolean requiresWorkers() {
return false;
}
}