Custom exception handler for condition evaluator ------------------------------------------------ Key: JBRULES-2017 URL: https://jira.jboss.org/jira/browse/JBRULES-2017 Project: JBoss Drools Issue Type: Feature Request Security Level: Public (Everyone can see) Components: drools-core Affects Versions: 5.0.0.CR1, 5.0.0.M5 Reporter: Sergej Iljin Assignee: Mark Proctor Priority: Critical Fix For: 5.0.0.GA Custom exception handler for condition evaluator. Its proposed to introduce custom exception handler for condition evaluator becaue "always re-trow" approach is not appropriate for some cases when fail-safe rule execution is necessary. There is an requirment which can't be satisfied with current implementation of condition evaluator: "All rules that are present in agenda should be performed fail safe and independed". So it means that if there are 2 rules and one of them throws a NullPointer exception while condition evaluation (because of wrong configuration) the second rule have to be performed. Changes have to be applied to following class: drools-core\src\main\java\org\drools\rule\EvalCondition.java in method: public boolean isAllowed(final Tuple tuple, final WorkingMemory workingMemory, final Object context) { try { return this.expression.evaluate( tuple, this.requiredDeclarations, workingMemory, context ); } catch ( final Exception e ) { throw new RuntimeDroolsException( this.getEvalExpression() + " : " + e, e ); } } should be replaced with somethig like this public boolean isAllowed(final Tuple tuple, final WorkingMemory workingMemory, final Object context) { try { return this.expression.evaluate( tuple, this.requiredDeclarations, workingMemory, context ); } catch ( final Exception e ) { getExceptionHandler().handle(e); } } -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira