/**
* Copyright (C) 2009-2013 FoundationDB, LLC
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* 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/>.
*/
package com.foundationdb.sql.optimizer.rule.cost;
import com.foundationdb.qp.rowtype.Schema;
import com.foundationdb.server.service.Service;
public class RandomCostModelService implements CostModelFactory, Service
{
@Override
public CostModel newCostModel(Schema schema, TableRowCounts tableRowCounts) {
return new RandomCostModel(schema, tableRowCounts, seed);
}
@Override
public void start() {
}
@Override
public void stop() {
}
@Override
public void crash() {
stop();
}
public long getSeed(){
return seed;
}
public void setSeed(long seed){
this.seed = seed;
}
public void reSeed() {
String seedStr = System.getProperty("fdbsql.test.seed");
if (seedStr == null) {
this.seed = System.currentTimeMillis();
} else {
this.seed = Long.parseLong(seedStr);
}
}
private long seed;
}