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

[Edson Tirelli (JIRA)]

     [ http://jira.jboss.com/jira/browse/JBRULES-977?page=all ]

Edson Tirelli reassigned JBRULES-977:
-------------------------------------

    Assignee: Edson Tirelli  (was: Mark Proctor)

> 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: Edson Tirelli
>
> 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();
>     }
> }

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