/*
* Copyright 2005 JBoss Inc
*
* 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.drools.decisiontable.parser;
import java.io.InputStream;
import org.drools.template.model.Package;
import org.junit.Test;
import static org.junit.Assert.*;
/**
*
* A special test for parsing a large workbook, to see how it scales.
*/
public class RuleWorksheetParseLargeTest {
private long startTimer;
private long endTimer;
/**
* Tests parsing a large spreadsheet into an in memory ruleset. This doesn't
* really do anything much at present. Takes a shed-load of memory to dump
* out this much XML as a string, so really should think of using a stream
* in some cases... (tried StringWriter, but is still in memory, so doesn't
* help).
*
* Stream to a temp file would work: return a stream from that file
* (decorate FileInputStream such that when you close it, it deletes the
* temp file).... must be other options.
*
* @throws Exception
*/
@Test
public void testLargeWorkSheetParseToRuleset() throws Exception {
// Test removed until have streaming sorted in future. No one using Uber Tables just yet !
InputStream stream = RuleWorksheetParseLargeTest.class.getResourceAsStream( "/data/VeryLargeWorkbook.xls" );
startTimer( );
RuleSheetListener listener = RuleWorksheetParseTest.getRuleSheetListener( stream );
stopTimer( );
System.out.println( "Time to parse large table : " + getTime() + "ms" );
Package ruleset = listener.getRuleSet( );
assertNotNull( ruleset );
// startTimer();
// String xml = ...; // toXml() not in Package any more.
// System.out.println( xml );
// stopTimer();
// System.out.println("Time taken for rendering: " + getTime() + "ms");
}
private void startTimer() {
this.startTimer = System.currentTimeMillis();
}
private void stopTimer() {
this.endTimer = System.currentTimeMillis();
}
private long getTime() {
return this.endTimer - this.startTimer;
}
}