[jboss-jira] [JBoss JIRA] Closed: (JBRULES-1289) BRMS gives unusable error messages when validating DSL based rules

BRMS gives unusable error messages when validating DSL based rules ------------------------------------------------------------------ Key: JBRULES-1289 URL: http://jira.jboss.com/jira/browse/JBRULES-1289 Project: JBoss Drools Issue Type: Bug Security Level: Public(Everyone can see) Components: drools-brms Affects Versions: 4.0.2 Reporter: Phil Verghese Assigned To: Michael Neale Fix For: 5.0.0-M1 The error messages that are shown when you click "Validate" when editing a business rule that uses a DSL in the BRMS are not user-friendly at all. If I make a small typo and misspell the name of an attribute (a very likely thing for a BRMS user to do), and click the Validate button, the error I get back is a big stack trace starting with "java.lang.RuntimeException: SNO: Conversion failed at org.codehaus.janino.UnitCompiler.numericPromotion(UnitCompiler.java) at ..." Nowhere in that stack trace is anything that gives a hint that the error is just a typo of an attribute name. Contrast this with the rather helpful error message I get if I make the same typo when editing a DRL rule: "Unable to create Field Extractor for 'overtimHours'". (The error is that I misspelled overtimeHours). The BRMS needs to give the same type of helpful error message on validation errors when editing a DSL rule.