package org.drools.examples.fibonacci;
/*
* $Id: FibonacciExample.java,v 1.17 2005/11/25 02:35:33 mproctor Exp $
*
* Copyright 2001-2003 (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.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The name "drools" must not be used to endorse or promote products derived
* from this Software without prior written permission of The Werken Company.
* For written permission, please contact bob@werken.com.
*
* 4. Products derived from this Software may not be called "drools" nor may
* "drools" appear in their names without prior written permission of The Werken
* Company. "drools" is a trademark of The Werken Company.
*
* 5. Due credit should be given to The Werken Company. (http://werken.com/)
*
* THIS SOFTWARE IS PROVIDED BY THE WERKEN COMPANY AND CONTRIBUTORS ``AS IS''
* AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE WERKEN COMPANY OR ITS CONTRIBUTORS BE
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*/
import java.io.InputStreamReader;
import org.drools.RuleBase;
import org.drools.WorkingMemory;
import org.drools.io.RuleBaseLoader;
import org.drools.io.RuleSetLoader;
public class FibonacciExample
{
public static void main(String[] args)
{
if ( args.length != 1 )
{
System.out.println( "Usage: " + FibonacciExample.class.getName( )
+ " [drl file]" );
return;
}
System.out.println( "Using drl: " + args[0] );
try
{
RuleSetLoader ruleSetLoader = new RuleSetLoader();
ruleSetLoader.addFromUrl( FibonacciExample.class.getResource( args[ 0 ] ) );
RuleBaseLoader ruleBaseLoader = new RuleBaseLoader();
ruleBaseLoader.addFromRuleSetLoader(ruleSetLoader);
RuleBase ruleBase = ruleBaseLoader.buildRuleBase();
WorkingMemory workingMemory;
Fibonacci fibonacci;
long start;
long stop;
System.err.println( "\nFirst run - code compiled on the fly" );
workingMemory = ruleBase.newWorkingMemory( );
fibonacci = new Fibonacci( 50 );
start = System.currentTimeMillis( );
workingMemory.assertObject( fibonacci );
workingMemory.fireAllRules( );
stop = System.currentTimeMillis( );
System.err.println( "fibonacci(" + fibonacci.getSequence( )
+ ") == " + fibonacci.getValue( ) + " took "
+ ( stop - start ) + "ms" );
System.err.println( "\nSecond run - code already compiled" );
workingMemory = ruleBase.newWorkingMemory( );
fibonacci = new Fibonacci( 50 );
start = System.currentTimeMillis( );
workingMemory.assertObject( fibonacci );
workingMemory.fireAllRules( );
stop = System.currentTimeMillis( );
System.err.println( "fibonacci(" + fibonacci.getSequence( )
+ ") == " + fibonacci.getValue( ) + " took "
+ ( stop - start ) + "ms" );
}
catch ( Exception e )
{
e.printStackTrace( );
}
}
}