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Language:
English
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Language:
English
13.40. Convenience Methods using the Kcontext Variable
- The call
kcontext.getKnowledgeRuntime().halt()
terminates rule execution immediately. - The accessor
getAgenda()
returns a reference to the session'sAgenda
, which in turn provides access to the various rule groups: activation groups, agenda groups, and rule flow groups. A fairly common paradigm is the activation of some agenda group, which could be done with the lengthy call:// give focus to the agenda group CleanUp kcontext.getKnowledgeRuntime().getAgenda().getAgendaGroup( "CleanUp" ).setFocus();
(You can achieve the same usingdrools.setFocus( "CleanUp" )
.) - To run a query, you call
getQueryResults(String query)
, whereupon you may process the results. - A set of methods dealing with event management lets you add and remove event listeners for the Working Memory and the Agenda.
- Method
getKnowledgeBase()
returns theKnowledgeBase
object, the backbone of all the Knowledge in your system, and the originator of the current session. - You can manage globals with
setGlobal(...)
,getGlobal(...)
andgetGlobals()
. - Method
getEnvironment()
returns the runtime'sEnvironment
.