/*******************************************************************************
* Copyright 2010 Cees De Groot, Alex Boisvert, Jan Kotek
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
******************************************************************************/
package jdbm.btree;
import java.io.IOException;
import java.util.Properties;
import jdbm.RecordManager;
import jdbm.RecordManagerFactory;
import jdbm.recman.TestCaseWithTestFile;
/**
* Test BTree insert performance.
*/
public class TestInsertPerf extends TestCaseWithTestFile
{
public TestInsertPerf() {}
int _numberOfObjects;
public TestInsertPerf( int numberOfObjects ) {
_numberOfObjects = numberOfObjects;
}
public void insert()
throws IOException
{
BTree btree;
RecordManager recman;
long start, finish;
Properties props;
props = new Properties();
recman = RecordManagerFactory.createRecordManager( "TestInsertPref-" + System.currentTimeMillis(),
props);
btree = BTree.createInstance( recman);
// Note: One can use specialized serializers for better performance / database size
// btree = BTree.createInstance( recman, new LongComparator(),
// LongSerializer.INSTANCE, IntegerSerializer.INSTANCE );
start = System.currentTimeMillis();
for (int i = 0; i < _numberOfObjects; i++) {
btree.insert( new Long( i ), new Integer( i ), false );
}
recman.commit();
finish = System.currentTimeMillis();
System.out.println( "It took " + (finish - start) + " ms to insert "
+ _numberOfObjects +" objects." );
}
public static void main( String[] args ) {
if ( args.length != 1 ) {
System.out.println( "Usage: TestInsertPerf [numberOfObjects]" );
return;
}
int numberOfObjects = Integer.parseInt( args[ 0 ] );
TestInsertPerf test = new TestInsertPerf( numberOfObjects );
try {
test.insert();
} catch ( IOException except ) {
except.printStackTrace();
}
}
}