Invalid dialect name causes NullPointerException in BRMS and Eclipse plug-in rule editor ---------------------------------------------------------------------------------------- Key: JBRULES-1581 URL: http://jira.jboss.com/jira/browse/JBRULES-1581 Project: JBoss Drools Issue Type: Bug Security Level: Public (Everyone can see) Components: drools-brms, Eclipse IDE Affects Versions: 4.0.4 Environment: Windows XP SP2, Sun JRE 1.5.0_13 Reporter: Shahad Ahmed Assigned To: Mark Proctor If you specify an invalid dialect attribute in a rule, or as a package dialect then the eclipse plug-in (and also BRMS) reports a java.lang.NullPointerException Either one of the two dialect used in the example below causes the NullPointerException: package defaultPackage import java.lang.Integer; dialect "javaxxx" rule "Examaple" auto-focus "true" dialect " javaxxx " when p : Integer( intValue == "10" ) then retract( p ); end In the BRMS if you try to validate the above rule or build the package you get an error with the stack shown below. It's not really a big issue other than the fact that the error message gives you absolutely no clue as to the cause of the error, or where it is located. It's only when I looked at the source code that I realized it was due to an invalid dialect name. An error occurred executing the action. Details java.lang.NullPointerException at org.drools.rule.builder.RuleBuildContext.<init>(RuleBuildContext.java:126) at org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:441) at org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:304) at org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:167) <More Omitted> -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira