/*
* Copyright 2008 Udai Gupta, Ralf Joachim
*
* 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 org.castor.cpa.query.ejbql;
import junit.framework.TestCase;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
/**
* Junit test for analyzing the performance of CastorQL Parser created by JavaCC
* 4.0 for reduced EJBQL for more information refer to the issue CASTOR-2396
*
* @author <a href="mailto:mailtoud AT gmail DOT com">Udai Gupta</a>
* @author <a href="mailto:ralf DOT joachim AT syscon DOT eu">Ralf Joachim</a>
* @version $Revision: 7121 $ $Date: 2006-04-25 16:09:10 -0600 (Tue, 25 Apr
* 2006) $
* @since 1.3
*/
public class TestEjbQLParser extends TestCase {
// --------------------------------------------------------------------------
public TestEjbQLParser(final String name) {
super(name);
}
// --------------------------------------------------------------------------
public static void testParserPerformance() {
System.out.println("start : Ejb");
// Modify to test more
String oql = "Select DisTinct o.item "
+ "from de.jsci.pcv.jdo.LieferantJDO as o "
+ "where o.deleted = false " + "order by o.name, o.id desc "
+ "limit ?1, :2";
long start = 0L;
// for(int i=0;i<10000;i++){
start = System.nanoTime();
runParser(oql);
// }
long stop = System.nanoTime();
System.out.println("end : Ejb Parsed :" + oql);
System.out.println(" in " + (stop - start) / 1000000.0
+ " milliseconds");
}
// --------------------------------------------------------------------------
/**
* Method which passes the OQL String to CastorQL Parser
*/
public static void runParser(final String oql) {
StringBuffer stringBuffer = new StringBuffer(oql);
EjbQLParser parser = null;
try {
InputStream bis = new ByteArrayInputStream(stringBuffer.toString()
.getBytes("UTF-8"));
InputStreamReader isr = new InputStreamReader(bis, "UTF-8");
SimpleCharStream jSt = new SimpleCharStream(isr);
EjbQLParserTokenManager tkmgr = new EjbQLParserTokenManager(
jSt);
parser = new EjbQLParser(tkmgr);
parser.ejbQL();
} catch (Exception e) {
System.out.println("NOK.");
System.out.println(e.getMessage());
parser.ReInit(System.in);
} catch (Error e) {
e.printStackTrace();
}
}
// --------------------------------------------------------------------------
}