Packaged rules use StringBuilder even when JavaDialectConfiguration languageLevel set to 1.4 -------------------------------------------------------------------------------------------- Key: JBRULES-1640 URL: http://jira.jboss.com/jira/browse/JBRULES-1640 Project: JBoss Drools Issue Type: Bug Security Level: Public (Everyone can see) Components: Drl Parser/Builder Affects Versions: 4.0.7 Environment: Java 5/6 for building packages, Java 2 (1.4) for reading them. Reporter: Brad Koehn Assigned To: Mark Proctor When creating a package and serializing it under Java 5/6, and the languageLevel is set to "1.4", Drools will generate code that uses StringBuilder, a class that doesn't exist in Java 1.4. Here's some code that is used to generate the package: PackageBuilderConfiguration packageBuilderConfiguration = new PackageBuilderConfiguration(); JavaDialectConfiguration javaDialectConfiguration = (JavaDialectConfiguration) packageBuilderConfiguration .getDialectConfiguration("java"); javaDialectConfiguration.setJavaLanguageLevel("1.4"); javaDialectConfiguration.setCompiler(JavaDialectConfiguration.JANINO); packageBuilderConfiguration.setDialectConfiguration("java", javaDialectConfiguration); Drools (Janino, in this case) generates the correct major/minor version of the classes, so they load correctly under a 1.4 JVM, but I then get a NoClassDefFoundError: java.util.StringBuilder at rule execution time. If I build the same package under a 1.4 JVM, Drools doesn't use StringBuilder and the rules execute correctly on a 1.4 JVM. -- 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