/**
* 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.server.test.costmodel;
import com.foundationdb.ais.model.Group;
import com.foundationdb.qp.operator.Cursor;
import com.foundationdb.qp.operator.Operator;
import com.foundationdb.qp.operator.TimeOperator;
import com.foundationdb.qp.rowtype.RowType;
import com.foundationdb.qp.rowtype.Schema;
import com.foundationdb.server.error.InvalidOperationException;
import com.foundationdb.server.test.ExpressionGenerators;
import org.junit.Test;
import java.util.Arrays;
import static com.foundationdb.qp.operator.API.*;
public class ProjectCT extends CostModelBase
{
@Test
public void run() throws Exception
{
createSchema();
populateDB(ROWS);
run(WARMUP_RUNS, false);
run(MEASURED_RUNS, true);
}
private void createSchema() throws InvalidOperationException
{
String schemaName = schemaName();
String tableName = newTableName();
t = createTable(schemaName, tableName,
"id int not null",
"primary key(id)");
schema = new Schema(ais());
tRowType = schema.tableRowType(table(t));
group = group(t);
adapter = newStoreAdapter(schema);
queryContext = queryContext(adapter);
queryBindings = queryContext.createBindings();
}
protected void populateDB(int rows)
{
for (int id = 0; id < rows; id++) {
writeRow(t, id);
}
}
private void run(int runs, boolean report)
{
Operator scan = groupScan_Default(group);
TimeOperator timeScan = new TimeOperator(scan);
Operator project = project_DefaultTest(timeScan, tRowType, Arrays.asList(ExpressionGenerators.literal(true)));
long start = System.nanoTime();
for (int r = 0; r < runs; r++) {
Cursor cursor = cursor(project, queryContext, queryBindings);
cursor.openTopLevel();
while (cursor.next() != null);
}
long stop = System.nanoTime();
long projectNsec = stop - start - timeScan.elapsedNsec();
if (report) {
// Report the difference
double averageUsecPerRow = projectNsec / (1000.0 * runs * ROWS);
System.out.println(String.format("%s usec/row", averageUsecPerRow));
}
}
private static final int ROWS = 100;
private static final int WARMUP_RUNS = 20000;
private static final int MEASURED_RUNS = 10000;
private int t;
private RowType tRowType;
private Group group;
}