[rules-users] accumulate funtion in xml

[Isabelle Hupont]

Sorry!! I mixed the .class and. java files!! ;)
Here is the source code. I also paste the code I am using to read the rule
package: 

public RuleBase readRulePackage() throws PersistenceException{
		// Reads a set of rules from XML file
		try {					

			PackageBuilder builder = new PackageBuilder();
			builder.addPackageFromXml(new InputStreamReader(new
FileInputStream(ruleFile)));

			ruleBase = RuleBaseFactory.newRuleBase();
			ruleBase.addPackage(builder.getPackage());
			return ruleBase;
			
		} catch (Exception e){
			e.printStackTrace();
			throw new PersistenceException("Error reading rules file");
		}
	}

thx! http://www.nabble.com/file/p12935779/Instance.java Instance.java 


Fernando Meyer Camargo wrote:
> 
> Hi isabelle,
> 
> When I said instance class, I was meaning your instance source code ;)
> 
> Regards
> 
> On 9/28/07, Isabelle Hupont <ihupont at ita.es> wrote:
>>
>>
>> Hi Fernando!
>>
>> Mi Instance class is the Weka class I attach....
>> Thanks for your attention.
>> Isabelle.
>> http://www.nabble.com/file/p12935480/Instance.class Instance.class
>>
>>
>>
>> Fernando Meyer Camargo wrote:
>> >
>> > Could you please provide your Instance class ?
>> >
>> >
>> > On 9/27/07, Isabelle Hupont <ihupont at ita.es> wrote:
>> >>
>> >>
>> >> Hi!
>> >>
>> >> I want to program the following drl rule in xml:
>> >>
>> >> rule "average calculation"
>> >>         no-loop true
>> >>         when
>> >>                 _i : Instance()
>> >>                 _average : Double()
>> >>                                 from accumulate(accInst: Instance(),
>> >>                                                        average(
>> >> accInst.value("tend")))
>> >>                 eval(_average < 20000)
>> >>         then
>> >>                 _i.setValue("tend",2000);
>> >> end
>> >>
>> >>
>> >> For it, I have implemented the following xml file:
>> >>
>> >> <?xml version="1.0" encoding="UTF-8"?>
>> >> <package name="org.prophet.fuzzy" xmlns="http://drools.org/drools-4.0"
>> >>     xmlns:xs="http://www.w3.org/2001/XMLSchema-instance"
>> >> xs:schemaLocation="http://drools.org/drools-4.0 drools-4.0.xsd">
>> >>     <import name="weka.core.*"/>
>> >>     <import name="org.prophet.gui.docking.*"/>
>> >>     <import name="org.prophet.persistence.*"/>
>> >>     <import name="org.prophet.persistence.hibernate.*"/>
>> >>     <import name="org.prophet.rules.*"/>
>> >>     <import name="org.prophet.*"/>
>> >>     <rule name="Rule1">
>> >>         <rule-attribute name="no-loop" value="true"/>
>> >>         <lhs>
>> >>             <pattern identifier="_i" object-type="Instance"/>
>> >>             <pattern identifier="_average" object-type="Double">
>> >>                 <from>
>> >>                     <accumulate>
>> >>                         <pattern identifier="accInst"
>> >> object-type="Instance"/>
>> >>                         <external-function evaluator="average"
>> >> expression="accInst.value(&quot;tend&quot;)"/>
>> >>                     </accumulate>
>> >>                 </from>
>> >>             </pattern>
>> >>             <eval>_average &lt; 20000.0</eval>
>> >>         </lhs>
>> >>         <rhs>
>> >> _i.setValue("tend", 2000.0); manageRuleFired("Rule1", null, _i);
>> >> modify(_i);</rhs>
>> >>     </rule>
>> >> </package>
>> >>
>> >> And I have the following error when reading the rule package:
>> >>
>> >> org.drools.rule.InvalidRulePackage: Rule Compilation error _average
>> >> cannot
>> >> be resolved _i cannot be resolved _i cannot be resolved _i__Handle__
>> >> cannot
>> >> be resolved _i cannot be resolved
>> >>
>> >>
>> >> I also have tried to replace the xml identifier <pattern> by <column>
>> >> with
>> >> no result. Can you help me, please?
>> >>
>> >>
>> >> --
>> >> View this message in context:
>> >>
>> http://www.nabble.com/accumulate-funtion-in-xml-tf4526879.html#a12916380
>> >> Sent from the drools - user mailing list archive at Nabble.com.
>> >>
>> >> _______________________________________________
>> >> rules-users mailing list
>> >> rules-users at lists.jboss.org
>> >> https://lists.jboss.org/mailman/listinfo/rules-users
>> >>
>> >
>> >
>> >
>> > --
>> > Fernando Meyer http://fmeyer.org
>> > JBoss Rules Core Developer
>> > fmcamargo at gmail.com
>> >
>> > _______________________________________________
>> > rules-users mailing list
>> > rules-users at lists.jboss.org
>> > https://lists.jboss.org/mailman/listinfo/rules-users
>> >
>> >
>>
>> --
>> View this message in context:
>> http://www.nabble.com/accumulate-funtion-in-xml-tf4526879.html#a12935480
>> Sent from the drools - user mailing list archive at Nabble.com.
>>
>> _______________________________________________
>> rules-users mailing list
>> rules-users at lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
> 
> 
> 
> -- 
> Fernando Meyer http://fmeyer.org
> JBoss Rules Core Developer
> fmcamargo at gmail.com
> 
> _______________________________________________
> rules-users mailing list
> rules-users at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
> 
> 

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