[jboss-jira] [JBoss JIRA] Created: (JBRULES-2274) Rule does not fire as expected using deep object model and nested 'or' clause

[Brian DeCamp (JIRA)]

Rule does not fire as expected using deep object model and nested 'or' clause
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                 Key: JBRULES-2274
                 URL: https://jira.jboss.org/jira/browse/JBRULES-2274
             Project: Drools
          Issue Type: Bug
      Security Level: Public (Everyone can see)
          Components: drools-core  (expert)
    Affects Versions: 5.0.1.FINAL
         Environment: Windows NT with JBoss 4.2.2GA using the 5.0.1 jars for core, compiler and api.

            Reporter: Brian DeCamp
            Assignee: Mark Proctor


When combining deep facts and nested 'or' statements, rules do not fire. I've reduced the problem as much as possible with the following example:

------- begin test.drl --------
rule "find one and two with 'or' clause - WORKS"
    when 
        com.xyz.SimpleFact(name == "one");
        (eval(true) or eval(true));
        com.xyz.SimpleFact(name == "two");
    then
      System.out.println("found one and two with 'or' clause");
end

rule "Deep one and two without 'or' - WORKS"
    when 
        d1: com.xyz.DeepFact();
        com.xyz.SimpleFact(name=="one") from d1.simple;
        d2: com.xyz.DeepFact();
        com.xyz.SimpleFact(name=="two") from d2.simple;
    then 
        System.out.println("Found deep facts with simple facts one and two without 'or' clause");
end

rule "Deep one and two with nested 'or' - FAILURE!!!"
    when 
        d1: com.xyz.DeepFact();
        com.xyz.SimpleFact(name=="one") from d1.simple;
        (eval(true) or eval(true));
        d2: com.xyz.DeepFact();
        com.xyz.SimpleFact(name=="two") from d2.simple;
    then 
        System.out.println("THIS DOES NOT FIRE");
end

-------end test.drl --------

------- begin DeepFact.java --------
package com.xyz;

public class DeepFact {
    private SimpleFact simple;
    
    public SimpleFact getSimple() {
        return simple;
    }
    public void setSimple(SimpleFact simple) {
        this.simple = simple;
    }
}
------- end DeepFact.java --------

------- begin SimpleFact.java --------
package com.xyz;

public class SimpleFact {
    private String name;

    public SimpleFact() {}
    public SimpleFact(String name) {
        this.name = name;
    }
    
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
    
}
------- end SimpleFact.java --------

------- begin test code-------
    public void testRules() {
        KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
        org.drools.io.Resource ruleResource;
        try {
            ruleResource = ResourceFactory.newInputStreamResource(new FileInputStream("test.drl"));
        } catch (FileNotFoundException e) {
            throw new RuntimeException(e);
        }
        kbuilder.add(ruleResource, ResourceType.DRL);
        if ( kbuilder.hasErrors() ) {
            System.err.println( kbuilder.getErrors().toString() );
        }                
        Collection<KnowledgePackage> compiledPackages = kbuilder.getKnowledgePackages();

        KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
        kbase.addKnowledgePackages(compiledPackages);
        StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();

        // Insert facts
        ksession.insert(new SimpleFact("one"));
        ksession.insert(new SimpleFact("two"));
        
        DeepFact d1 = new DeepFact();
        d1.setSimple(new SimpleFact("one"));
        ksession.insert(d1);
        
        DeepFact d2 = new DeepFact();
        d2.setSimple(new SimpleFact("two"));
        ksession.insert(d2);

        ksession.fireAllRules();
        ksession.dispose();
    }
------- end test code --------


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