On Thu, Nov 26, 2009 at 8:18 AM, paf84 <pierre.belhomme@sogeti.com> wrote:

Hello,

I try to understand how to use Drolls.
It's not the first time i work with rules (i know JRules).
I have a probleme when i execute my ruleflow.
I have some rules which belong to different ruleflow-group.
I have put my ruleflow-group in my ruleflow.

THe probleme is that my ruleflow never execute the "then" part of my rules.

If i delete le ruleflow-group of my rules and i execute the drl file, all my
"then" part are executed.
I think i have a problem to give my facts to the ruleflow...

Is somebody can help me ?

thx!!

Pierre

my .java

KnowledgeBase kbase = readKnowledgeBase();
StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
KnowledgeRuntimeLogger logger =
KnowledgeRuntimeLoggerFactory.newFileLogger(ksession, "test");
// start a new process instance
System.out.println("init");
Parametre parametre = new Parametre();
parametre.para1 = "para1";
parametre.para2 = "para2";
Parametre parametre2 = new Parametre();
parametre2.para1 = "para1";
parametre2.para2 = "para2";
ksession.insert(parametre);

WorkItemHandler handler = new WorkItemHandler() {
public void executeWorkItem(WorkItem workItem,WorkItemManager manager) {
System.out.println(">" + workItem.getParameters());
System.out.println("Executing work item " + workItem);
manager.completeWorkItem(workItem.getId(), null);
}

public void abortWorkItem(WorkItem workItem,
WorkItemManager manager) {
// Do nothing
}
};

Map<String, Object> parametersDispo = new HashMap<String, Object>();
parametersDispo.put("parametre", parametre);

ksession.getWorkItemManager().registerWorkItemHandler("groupe1",
handler);

ksession.startProcess("com.sample.ruleflow1", parametersDispo);

ksession.fireAllRules();
logger.close();
} catch (Throwable t) {
t.printStackTrace();
}
}

private static KnowledgeBase readKnowledgeBase() throws Exception {
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(ResourceFactory.newClassPathResource("Sample4.drl",
RuleFlowTest.class), ResourceType.DRL);
kbuilder.add(ResourceFactory.newClassPathResource("ruleFlow1.rf"),
ResourceType.DRF);

KnowledgeBuilderErrors errors = kbuilder.getErrors();
if (errors.size() > 0) {
for (KnowledgeBuilderError error: errors) {
System.err.println(error);
}
throw new IllegalArgumentException("Could not parse knowledge.");
}
KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
return kbase;
}

public static class Parametre {

private String para1;
private String para2;

public String getPara1(){
return this.para1;
}
public String getPara2(){
return this.para2;
}

}

One of my rules :

rule "test 1"

ruleflow-group "groupe1"
when
p : Parametre( para1 : para1)
eval (para1 == "para1")

then
System.out.println( "groupe1 test 1" );

end

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