[rules-users] Re: ClassLoader Problem

Yann, You need to add your com/sample/* classes to the classpath of your PluginClassLoader, or configure that ClassLoader to use a parent that has those classes on its classpath. John Yann Massard wrote: > Hi, > > I am using version 4.0.7 of Drools. > > I am trying to load facts with a particular ClassLoader and compiling > the rules using the same ClassLoader: > > ------ > Reader source = new FileReader("plugin/Sample.drl"); > ClassLoader pluginClassLoader = new PluginClassLoader(); > > Thread.currentThread().setContextClassLoader( pluginClassLoader ); > PackageBuilder builder = new PackageBuilder(new > PackageBuilderConfiguration(pluginClassLoader)); > > builder.addPackageFromDrl(source); > Package pkg = builder.getPackage(); > > RuleBase ruleBase = RuleBaseFactory.newRuleBase(); > ruleBase.addPackage(pkg); > ------ > > This works fine for usage of the fact types in the LHS of rules and for > field extraction. > But when I add a method invocation or an update statement on a fact to > the RHS of a rule I get a rule compilation error: > > ------- > org.drools.rule.InvalidRulePackage: Rule Compilation error : [Rule > name=Hello World, agendaGroup=MAIN, salience=0, no-loop=false] > com/sample/Rule_Hello_World_0.java (6:267) : plugin.Message cannot be > resolved to a type > ------- > > I have reduced the problem to a minimal complexity (see attachments). > Any ideas? > > By the way: do I really need to set both the ClassLoader in the > PackageBuilderConfiguration AND the ContextClassLoader (as described in > http://blog.athico.com/2006/12/dynamically-generated-class-beans-as.html)? > _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users