Hello, I have given it a try with JBoss Rules 4.0.0 and this time, both facts are retracted! Congratulations for this exciting new version. Regards, Alexandre On 5/24/07, A Gattiker <agattik(a)gmail.com&gt; wrote: > Hello, > > I am trying to use assertLogical in combination with a > WorkingMemoryEventListener in order to have business rules drive my > application: if conditions, then do something; if conditions not true > anymore, then do something else. > > However, it seems that if the rule is activated multiple times, then > becomes unsupported, only one of the assertLogical'ed facts is > retracted, as illustrated in the example below. > > Does anyone know how to get around that problem? I thought > assertLogical would be an elegant solution but maybe there is a better > way? > > Kind regards > Alexandre > > > To reproduce the problem: With the JBoss Rules 3.0.6 IDE, I have > started with a test project with the Eclipse Wizard and modified it as > listed below. "Date" facts are used simply to ensure unequality. > > DRL: > > import com.sample.DroolsTest.Message; > import java.util.Date; > > rule "Hello World" > when > $i : Message ( status > 4 ) > then > assertLogical(new Date()); > end > > Java: > workingMemory.addEventListener(new > DebugWorkingMemoryEventListener()); > > Message message = new Message(); > message.setStatus( 10 ); > FactHandle fh = workingMemory.assertObject( message ); > workingMemory.fireAllRules(); > Thread.sleep(2000); > > message.setStatus( 6 ); > workingMemory.modifyObject(fh, message); > workingMemory.fireAllRules(); > > Thread.sleep(2000); > message.setStatus( 2 ); > workingMemory.modifyObject(fh, message); > workingMemory.fireAllRules(); > > Output: > [ObjectAsserted: handle=[fid:1:1]; > object=com.sample.DroolsTest$Message@629da7ee] > [ObjectAsserted: handle=[fid:2:2]; object=Thu May 24 19:19:01 CEST 2007] > [ObjectModified: handle=[fid:1:3]; > old_object=com.sample.DroolsTest$Message@629da7ee; > new_object=com.sample.DroolsTest$Message@629da7ee] > [ObjectAsserted: handle=[fid:3:4]; object=Thu May 24 19:19:03 CEST 2007] > [ObjectModified: handle=[fid:1:5]; > old_object=com.sample.DroolsTest$Message@629da7ee; > new_object=com.sample.DroolsTest$Message@629da7ee] > [ObjectRetracted: handle=[fid:3:4]; old_object=Thu May 24 19:19:03 CEST 2007] > _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users