[jboss-jira] [JBoss JIRA] Created: (JBRULES-977) Foo(this != $i) fails when using ShadowProxy

[Brian Stiles (JIRA)]

Foo(this != $i) fails when using ShadowProxy
--------------------------------------------

                 Key: JBRULES-977
                 URL: http://jira.jboss.com/jira/browse/JBRULES-977
             Project: JBoss Rules
          Issue Type: Bug
      Security Level: Public (Everyone can see)
    Affects Versions:  4.0.0.MR4
            Reporter: Brian Stiles
         Assigned To: Mark Proctor


The self reference field "this" doesn't behave as expected when shadow proxies are used.

when
    $i : Foo()
    Foo(this != $i)

the above always fires.

The following code exhibits the problem.

--------
/*
 * Created on Apr 26, 2007
 */
package sample;

import java.io.StringReader;

import org.drools.RuleBase;
import org.drools.RuleBaseConfiguration;
import org.drools.RuleBaseFactory;
import org.drools.StatefulSession;
import org.drools.compiler.PackageBuilder;
import org.drools.compiler.PackageBuilderConfiguration;

public class ThisProblem {

    public static class Foo {

        private final int _number;

        public Foo(int number) {
            _number = number;
        }

        public int getNumber() {
            return _number;
        }

        public int hashCode() {
            return _number;
        }

        public boolean equals(Object obj) {
            if (obj == this) {
                return true;
            }
            if (obj instanceof Foo) {
                final Foo other = (Foo) obj;
                return _number == other._number;
            }
            return false;
        }

        public String toString() {
            return String.valueOf(_number);
        }
    }

    public static void main(String[] args) throws Exception {
        fail();
        System.out.println("********************************************");
        succeed();
    }

    private static void fail() throws Exception {
        test(true);
    }

    private static void succeed() throws Exception {
        test(false);
    }

    private static void test(boolean useShadowProxy) throws Exception {

        final PackageBuilderConfiguration packageBuilderConfiguration =
                new PackageBuilderConfiguration();
        final PackageBuilder packageBuilder = new PackageBuilder(packageBuilderConfiguration);

        packageBuilder.addPackageFromDrl(new StringReader("\n"
                + "package sample\n"
                + "\n"
                + "import sample.ThisProblem.Foo;"
                + "\n"
                + "rule MyRule\n"
                + "    dialect \"java\"\n"
                + "\n"
                + "    when\n"
                + "        $i : Foo()\n"
                + "        $k : Foo(this != $i)\n"
                + "    then \n"
                + "        System.out.println(\"-------------\");\n"
                + "        System.out.println($i + \": \" + System.identityHashCode($i));\n"
                + "        System.out.println($k + \": \" + System.identityHashCode($k));\n"
                + "end \n"));

        final RuleBaseConfiguration ruleBaseConfiguration = new RuleBaseConfiguration();
        ruleBaseConfiguration.setShadowProxy(useShadowProxy);
        final RuleBase ruleBase = RuleBaseFactory.newRuleBase(ruleBaseConfiguration);

        ruleBase.addPackage(packageBuilder.getPackage());

        final StatefulSession session = ruleBase.newStatefulSession();
        session.insert(new Foo(1));
        session.fireAllRules();
    }
}



-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira