This is a bug that was fixed a few weeks ago. If you can use trunk, you will not have this problem.
[]s Edson 2009/5/5 Rainer Schulz <[email protected]> > Hi, > > i have some problems with custom functions and types. > > I m using Drools 5.0 and Eclipse 3.4.2 (have to use these eclipse version, > so my decision was to use the drools beta). > > I declared a type in my rule file like : > > *******declare* VarHolder > > var1 : String > > var2 : Long > > var3 : String > > *******end* > > also i specified a custom function in the same file, which i have to use > in my rules (it’s a example function) : > > function String hello(String name) { > > return "Hello "+name+"!"; > > } > > . > > The declared Type will be used in the java code : > > // handle the type as necessary: > > // create instances: > > Object vars = varHolderTyp.newInstance(); > > // set attributes values > > varHolderTyp.setFromMap(vars,varMap); > > // insert fact into a session > > StatefulKnowledgeSession ksession = ... > > ksession.insert( vars ); > > When it comes to the “setFromMap”, then I get a ClassCastException for > the VarHolderTyp. But when I remove the declaration of the function in the > rule file, then everything works fine (all variables will be filled > correctly). It seems, that the reflection mechanism will not work > correctly, when drools want to create the Pojo for VarHolder and the > Static Method for the function. But it s very difficult to debug, because > the exception fires in the drools engine. > > Maybe I’ve make a mistake so anyone knows a solution for this problem or > can tell me, where my mistake is. It will be nice, when I can declare a > type and a function together in one rule file. At the moment, I created a > java class for VarHolder, so the exception does not appear, but I m losing > a lot of dynamic. > > Please give me a hint > > _______________________________________________ > rules-users mailing list > [email protected] > https://lists.jboss.org/mailman/listinfo/rules-users > > -- Edson Tirelli JBoss Drools Core Development JBoss, a division of Red Hat @ www.jboss.com
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