Hi,
I also generate rules using API. I didn't find any documentation for that
except JavaDoc, and my approach is: first create .drl file with rule that
contain construct I would like to create using API, then instead doing:
builder.addPackageFromDrl( source );
I do:
final DrlParser parser = new DrlParser();
final PackageDescr pkgdscr = parser.parse( source );
and now I can do reverse engineering on pkgDescr.
regards
John
On 11/22/06, Damien Delautre <[EMAIL PROTECTED]> wrote:
I only found the Drools API documentation (
http://labs.jboss.com/file-access/default/members/jbossrules/freezone/docs/3.0.4/apidocs/index.html)
in which there are mostly java prototypes.
But you can use these lines to see the DRL generated:
DrlDumper dumper = new DrlDumper();
System.out.println(dumper.dump(pack));
where pack is a PackageDescr.
So you can try using the API and see whether the result is what you want
or not.
Damien
Neil Goldman a écrit :
I see that you are using the JBRules API to create rules (RuleDescr,
ColumnDescr, etc.) Did you find documentation for these classes and methods
(other than just the java prototypes) anywhere?
thanks,
neil
Neil M. Goldman
Teknowledge Corporation
4640 Admiralty Way, Suite 1010
Marina Del Rey, CA 90292
(310) 578-5350 x204 (voice)
(310) 578-5710 (fax)
[EMAIL PROTECTED]
------------------------------
*From:* Damien Delautre [mailto:[EMAIL PROTECTED]<[EMAIL PROTECTED]>]
*Sent:* Wednesday, November 22, 2006 8:41 AM
*To:* [email protected]
*Subject:* [drools-user] Rules execution ClassLoader
Hello,
I have rules based on a class which is generated dynamically (my rules are
also generated dynamically).
I have found how to specify the ClassLoader to compile the rules (with the
PackageBuilderConfiguration class), but I don't know how to specify the
ClassLoader for the execution.
Can anyone tell me how to do this?
I am using JBRules 3.0.4.
Thanks
Damien
My code:
Class elementClass = ((ListImpl) contact.getList
()).getElementClass(clmSession);
String className = elementClass.getSimpleName();
String fullClassName = elementClass.getName();
PackageBuilderConfiguration config = new
PackageBuilderConfiguration();
config.setClassLoader(contact.getClass().getClassLoader());
PackageBuilder builder = new PackageBuilder(config);
PackageDescr pack = new PackageDescr("
com.konversation.core.condition");
pack.addImport(fullClassName);
RuleDescr ruleDescr = new RuleDescr("Province = QC");
AndDescr and = new AndDescr();
ColumnDescr column = new ColumnDescr(className, "contact");
LiteralDescr fieldConstraint = new
LiteralDescr("propProvince", "==", "QC");
column.addDescr(fieldConstraint);
and.addDescr(column);
ruleDescr.setLhs(and);
ruleDescr.setConsequence("System.out.println(\"province =
QC\");");
pack.addRule(ruleDescr);
builder.addPackage(pack);
RuleBase ruleBase = RuleBaseFactory.newRuleBase();
ruleBase.addPackage( builder.getPackage() );
WorkingMemory workingMemory = ruleBase.newWorkingMemory();
FactHandle handle = workingMemory.assertObject(contact);
workingMemory.fireAllRules();
The DRL generated :
package com.konversation.core.condition;
import com.konversation.worlds.List67ElementImpl;
rule "Province = QC"
when
contact : List67ElementImpl( propProvince == "QC" )
then
System.out.println("province = QC");
end
The exception:
java.lang.NoClassDefFoundError:
com/konversation/worlds/List67ElementImpl
at
org.drools.base.com.konversation.worlds.List67ElementImpl$getPropProvince.getValue(Unknown
Source)
at org.drools.base.ClassFieldExtractor.getValue(Unknown
Source)
at org.drools.reteoo.AlphaNodeSwitch.getNode(Unknown
Source)
at org.drools.reteoo.HashedObjectSinkList$1.hasNext(Unknown
Source)
at org.drools.reteoo.ObjectSource.propagateAssertObject(Unknown
Source)
at org.drools.reteoo.ObjectTypeNode.assertObject(Unknown
Source)
at org.drools.reteoo.Rete.assertObject(Unknown Source)
at org.drools.reteoo.ReteooRuleBase.assertObject(Unknown
Source)
at org.drools.reteoo.ReteooWorkingMemory.doAssertObject(Unknown
Source)
at org.drools.common.AbstractWorkingMemory.assertObject(Unknown
Source)
at org.drools.common.AbstractWorkingMemory.assertObject(Unknown
Source)
