[jboss-jira] [JBoss JIRA] Created: (JBRULES-1060) Unexpected exit with no stack trace or other information

[christopher barham (JIRA)]

Unexpected exit with no stack trace or other information
--------------------------------------------------------

                 Key: JBRULES-1060
                 URL: http://jira.jboss.com/jira/browse/JBRULES-1060
             Project: JBoss Rules
          Issue Type: Bug
      Security Level: Public (Everyone can see)
    Affects Versions:  4.0.0.GA
         Environment: Windows XP sp2, 1GB RAM, Sun Java JDK 1.5.0_11, Eclipse 3.3 Build id: I20070621-1340,  JBOSS Rules feature/plugin 4.0.0
            Reporter: christopher barham
         Assigned To: Mark Proctor


When inserting a number of facts, (seems to be somewhere around 450 facts in this test example here), the rules system exits unexpectedly with no stack trace or other information.  I pared down my code to a simple example that demonstrates this below.  I can get it to run normally if I insert 450 facts, however 475 or above exhibits this unexpected system exit.  I am running this from Eclipse.

Garbage.java (fact bean):

package com.sample;

public class Garbage {
    private char id;

    private int someNumber;

    public Garbage(char garbageId, int someNumber) {
        setSomeNumber(someNumber);
        setId(garbageId);
    }

    public char getId() {
        return id;
    }

    public int getSomeNumber() {
        return someNumber;
    }

    public void setId(char id) {
        this.id = id;
    }

    public void setSomeNumber(int someNumber) {
        this.someNumber = someNumber;
    }

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append("a Garbage { ");
        sb.append("someNumber= ");
        sb.append(getSomeNumber());
        sb.append(", id= ");
        sb.append(getId());
        sb.append(" }");
        return sb.toString();
    }

}

StrangeExit.Java (Rule Engine startup and fact insertion):

package com.sample;

import java.io.InputStreamReader;
import java.io.Reader;

import org.drools.RuleBase;
import org.drools.RuleBaseFactory;
import org.drools.WorkingMemory;
import org.drools.compiler.PackageBuilder;
import org.drools.event.DebugWorkingMemoryEventListener;
import org.drools.rule.Package;

public class StrangeExit {

    public static final void main(String[] args) {
        try {
            long startTime = System.currentTimeMillis();
            System.out.println("Starting problem at " + new java.util.Date());
            RuleBase ruleBase = readRule();
            WorkingMemory workingMemory = ruleBase.newStatefulSession();

            workingMemory.addEventListener(new DebugWorkingMemoryEventListener());

            assertAllFacts(workingMemory);

            workingMemory.fireAllRules();

            long stopTime = System.currentTimeMillis();
            long runTime = stopTime - startTime;
            System.out.println("Run time (milliseconds): " + runTime);
            System.out.println("Finished problem at " + new java.util.Date());
        } catch (Throwable t) {
            t.printStackTrace();
        }
    }

    private static void assertAllFacts(WorkingMemory workingMemory) {
        for (int i = 1; i <= 3; i++) {
            for (int j = 1; j <= 475; j++) {
                Garbage gar = new Garbage((char)(i + 64), j);
                workingMemory.insert(gar);
            }
        }
    }

    private static RuleBase readRule() throws Exception {
        Reader source = new InputStreamReader(StrangeExit.class.getResourceAsStream("/strange.drl"));
        PackageBuilder builder = new PackageBuilder();
        builder.addPackageFromDrl(source);
        Package pkg = builder.getPackage();
        RuleBase ruleBase = RuleBaseFactory.newRuleBase();
        ruleBase.addPackage(pkg);
        return ruleBase;
    }
}


The Rule itself:

package com.sample

import com.sample.Garbage;

rule "Weird exit with no stack trace error"
  when
    $garA : Garbage(  )
    $garB : Garbage( id == 'B' , someNumber >= $garA.someNumber )
  then
    System.out.println("Something is up");
end










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