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