[rules-users] Drools 5 setGlobal

[Salaboy]

Well, in the second code snippet you are trying to set an unexistent  
variable called test2. For setting a global variable you need to  
define it first in the drl file. Greetings!

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On Jun 22, 2010, at 4:32, Samuli Saarinen <samuli.saarinen at remion.com>  
wrote:

> Hello,
>
> I'm new to drools and have problems with globals or with the different
> behaviour of drools depending on how the globals are specified.
>
> I have the following simple rule:
>
> global String test
>
> rule "Global"
>   when
>   then
>     System.out.println(test);
> end
>
> If i run the rule with:
>
> KnowledgeBase kb = getKnowledgeBase("global.drl");
> StatelessKnowledgeSession ses = kb.newStatelessKnowledgeSession();
> ses.setGlobal("test2", "foo");
> ses.execute("");
>
> I get the expected result of null printed
>
> but if I use commands:
>
> KnowledgeBase kb = getKnowledgeBase("global.drl");
> StatelessKnowledgeSession ses = kb.newStatelessKnowledgeSession();
> List<Command<?>> cmds = new ArrayList<Command<?>>();
> cmds.add(CommandFactory.newSetGlobal("test2", "bar"));
> cmds.add(CommandFactory.newInsert(""));
> ses.execute(CommandFactory.newBatchExecution(cmds));
>
> I get java.lang.RuntimeException: Unexpected global [test2]
>
> Why is the behaviour different and which one is correct?
>
> Regards,
>
> Samuli
>
>
> -- 
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