Mauricio, I would like to take this example as the base to play around. That is what I did:
1. Make a project "try" that generates the HellowWorld for me in Eclipse. 2. add directory "log" 3. Move file Guess.java to the Java/com/sample directory. Move Guess.drl and Guss.rf to rule directory. 4. Change Package and Implort location from org/drools/examples to com/sample in the above three files. Eclipse shows compiler error pointing to ShoppingExample.*class. * ** *I did the same to Shopping.java and Shopping.drl and the compiler error is removed, and the following is the run time error messages:* ** * Exception in thread "main" java.lang.IllegalArgumentException: Unknown process ID: Number Guess at org.drools.common.AbstractWorkingMemory.startProcess( AbstractWorkingMemory.java:1615) at org.drools.common.AbstractWorkingMemory.startProcess( AbstractWorkingMemory.java:1604) at org.drools.impl.StatefulKnowledgeSessionImpl.startProcess( StatefulKnowledgeSessionImpl.java:267) at com.sample.NumberGuessExample.main(NumberGuessExample.java:38) * Could you please point me the right direction? Thanks, Tak ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** 2009/6/10 Mauricio Salatino <[email protected]> > This is only a reference to know in which class loader is the resource... > The idea is to know that the resource (in this case: NumberGuess.drl and > NumberGuess.rf) is in the same class loader that the ShoppingExample.* > class* > > 2009/6/10 Tak-po Li <[email protected]> > >> >> I am a newbie with Drools rules. I just download the examples. I notice >> in line19 of NumberGuessExample.java, there are two statement that >> referring to ShoppingExample.*class.* >> >> It seems this is different example. Could someone help me out? >> >> Thanks, >> >> Tak >> >> >> >> kbuilder.add( ResourceFactory.*newClassPathResource*( >> "NumberGuess.drl", >> >> ShoppingExample. >> *class* ), >> >> ResourceType. >> *DRL* ); >> >> kbuilder.add( ResourceFactory.*newClassPathResource*( >> "NumberGuess.rf", >> >> ShoppingExample. >> *class* ), >> >> ResourceType. >> *DRF* ); >> >> _______________________________________________ >> rules-users mailing list >> [email protected] >> https://lists.jboss.org/mailman/listinfo/rules-users >> >> > > > -- > - http://salaboy.wordpress.com > - http://www.jbug.com.ar > - Salatino "Salaboy" Mauricio - > > _______________________________________________ > rules-users mailing list > [email protected] > https://lists.jboss.org/mailman/listinfo/rules-users > >
package com.sample
dialect "mvel"
import com.sample.NumberGuessExample.RandomNumber
import com.sample.NumberGuessExample.Guess
import com.sample.NumberGuessExample.Game
import com.sample.NumberGuessExample.GameRules
import java.io.InputStreamReader;
import java.io.BufferedReader;
rule "Get user Guess"
ruleflow-group "Guess"
no-loop
when
$r : RandomNumber()
rules : GameRules( allowed : allowedGuesses )
game : Game( guessCount < allowed )
not ( Guess() )
then
System.out.println( "You have " + ( rules.allowedGuesses -
game.guessCount ) + " out of " + rules.allowedGuesses + " guesses left.\nPlease
enter your guess from 0 to " + rules.maxRange );
br = new BufferedReader( new InputStreamReader( System.in ) );
modify ( game ) { guessCount += 1 }
i = br.readLine();
insert( new Guess( i ) );
end
rule "Record the biggest Guess"
ruleflow-group "Guess"
no-loop
when
game : Game( biggestGuess : biggest )
Guess( $value : value > biggestGuess )
then
modify ( game ) { biggest = $value };
end
rule "Record the smallest Guess"
ruleflow-group "Guess"
no-loop
when
game : Game( smallestGuess : smallest )
Guess( $value : value < smallestGuess )
then
modify ( game ) { smallest = $value };
end
rule "Guess incorrect, retract Guess"
ruleflow-group "Guess incorrect"
when
guess : Guess()
then
retract( guess );
end
rule "No more Guesses notification"
ruleflow-group "No more Guesses"
when
r : RandomNumber()
game : Game( )
then
System.out.println( "\nYou have no more guesses\nThe correct guess was
" + r.value );
System.out.println( "Your smallest guess was " + game.smallest +
"\nYour biggest guess was " + game.biggest );
end
NumberGuessExample.java
Description: Binary data
ShoppingExample.java
Description: Binary data
<?xml version="1.0" encoding="UTF-8"?> <process xmlns="http://drools.org/drools-5.0/process"; xmlns:xs="http://www.w3.org/2001/XMLSchema-instance"; xs:schemaLocation="http://drools.org/drools-5.0/process drools-processes-5.0.xsd" type="RuleFlow" name="Number Guess" id="Number Guess" package-name="org.drools.examples" > <header> <imports> <import name="org.drools.examples.NumberGuessExample.Game" /> <import name="org.drools.examples.NumberGuessExample.GameRules" /> <import name="org.drools.examples.NumberGuessExample.Guess" /> <import name="org.drools.examples.NumberGuessExample.RandomNumber" /> </imports> </header> <nodes> <end id="4" name="End" x="373" y="336" width="80" height="40" /> <split id="8" name="More Guesses?" x="629" y="261" width="93" height="40" type="2" > <constraints> <constraint toNodeId="3" toType="DROOLS_DEFAULT" name="No more Guesses" priority="1" type="rule" dialect="mvel" >GameRules( allowed : allowedGuesses ) Game( guessCount >= allowed )</constraint> <constraint toNodeId="6" toType="DROOLS_DEFAULT" name="More guesses" priority="1" type="rule" dialect="mvel" >GameRules( allowed : allowedGuesses ) Game( guessCount < allowed )</constraint> </constraints> </split> <ruleSet id="11" name="Guess incorrect" x="79" y="455" width="80" height="40" ruleFlowGroup="Guess incorrect" /> <ruleSet id="3" name="No more Guesses" x="499" y="260" width="109" height="40" ruleFlowGroup="No more Guesses" /> <ruleSet id="7" name="Guess" x="76" y="198" width="80" height="40" ruleFlowGroup="Guess" /> <actionNode id="12" name="Too high" x="3" y="325" width="80" height="40" > <action type="expression" dialect="mvel" >System.out.println( "Your guess was too high" );</action> </actionNode> <actionNode id="2" name="Guess correct" x="219" y="260" width="102" height="40" > <action type="expression" dialect="mvel" >System.out.println( "You guessed correctly" );</action> </actionNode> <actionNode id="13" name="Too low" x="154" y="324" width="80" height="40" > <action type="expression" dialect="mvel" >System.out.println( "Your guess was too low" );</action> </actionNode> <join id="9" name="Incorrect guess" x="67" y="387" width="103" height="40" type="2" /> <join id="6" name="More guesses Join" x="57" y="135" width="119" height="40" type="2" /> <start id="1" name="Start" x="76" y="60" width="80" height="40" /> <join id="10" name="No more guesses Join" x="350" y="261" width="128" height="40" type="2" /> <split id="5" name="Guess correct?" x="59" y="261" width="115" height="40" type="2" > <constraints> <constraint toNodeId="12" toType="DROOLS_DEFAULT" name="too high" priority="1" type="rule" dialect="mvel" >RandomNumber( randomValue : value ) Guess( value > randomValue )</constraint> <constraint toNodeId="2" toType="DROOLS_DEFAULT" name="correct" priority="1" type="rule" dialect="mvel" >RandomNumber( randomValue : value ) Guess( value == randomValue )</constraint> <constraint toNodeId="13" toType="DROOLS_DEFAULT" name="too low" priority="1" type="rule" dialect="mvel" >RandomNumber( randomValue : value ) Guess( value < randomValue )</constraint> </constraints> </split> </nodes> <connections> <connection from="10" to="4" /> <connection from="11" to="8" bendpoints="[675,474]" /> <connection from="9" to="11" /> <connection from="8" to="3" /> <connection from="6" to="7" /> <connection from="5" to="12" /> <connection from="5" to="2" /> <connection from="5" to="13" /> <connection from="12" to="9" /> <connection from="13" to="9" /> <connection from="1" to="6" /> <connection from="8" to="6" bendpoints="[675,154]" /> <connection from="3" to="10" /> <connection from="2" to="10" /> <connection from="7" to="5" /> </connections> </process>
package com.sample
dialect "mvel"
import com.sample.ShoppingExample.Customer
import com.sample.ShoppingExample.Product
import com.sample.ShoppingExample.Purchase
import com.sample.ShoppingExample.Discount
rule "Purchase notification"
salience 10
when
$c : Customer()
$p : Purchase( customer == $c)
then
System.out.println( "Customer " + $c.name + " just purchased " +
$p.product.name );
end
rule "Discount removed notification"
when
$c : Customer()
not Discount( customer == $c )
then
$c.discount = 0;
System.out.println( "Customer " + $c.name + " now has a
discount of " + $c.discount );
end
rule "Discount awarded notification"
when
$c : Customer()
$d : Discount( customer == $c )
then
System.out.println( "Customer " + $c.name + " now has a
discount of " + $d.amount );
end
rule "Apply 10% discount if total purcahses is over 100"
no-loop true
dialect "java"
when
$c : Customer()
$i : Double(doubleValue > 100) from accumulate ( Purchase(
customer == $c, $price : product.price ),
sum( $price ) )
then
$c.setDiscount( 10 );
insertLogical( new Discount($c, 10) );
System.out.println( "Customer " + $c.getName() + " now has a
shopping total of " + $i );
end_______________________________________________ rules-users mailing list [email protected] https://lists.jboss.org/mailman/listinfo/rules-users
