ruleworksheetparselargetest.java

drools 一个开放源码的规则引擎

package org.drools.decisiontable.parser;


/*
 * Copyright 2005 (C) The Werken Company. All Rights Reserved.
 *
 * Redistribution and use of this software and associated documentation
 * ("Software"), with or without modification, are permitted provided that the
 * following conditions are met:
 *
 * 1. Redistributions of source code must retain copyright statements and
 * notices. Redistributions must also contain a copy of this document.
 *
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 * from this Software without prior written permission of The Werken Company.
 * For written permission, please contact [e-mail].
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 * 5. Due credit should be given to The Werken Company.
 * (http://drools.werken.com/).
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import junit.framework.TestCase;

/**
 * @author <a href="mailto:[e-mail]"> Michael Neale</a>
 * 
 * A special test for parsing a large workbook, to see how it scales.
 * 
 */
public class RuleWorksheetParseLargeTest extends TestCase
{

    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
     */
    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( ) );
//        Ruleset ruleset = listener.getRuleSet( );
//        assertNotNull( ruleset );
        /*
         * System.out.println("Time taken for 20K rows parsed: " + getTime());
         * 
         * startTimer(); String xml = listener.getRuleSet().toXML();
         * stopTimer(); System.out.println("Time taken for rendering to XML: " +
         * getTime());
         */
    }

    private void startTimer()
    {
        startTimer = System.currentTimeMillis( );
    }

    private void stopTimer()
    {
        endTimer = System.currentTimeMillis( );
    }

    private long getTime()
    {
        return endTimer - startTimer;
    }

}