<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=DE link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Hello,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>some of our custom operators need to access already inserted facts at runtime. Therefore we extended <b>org.drools.base.BaseEvaluator</b>. The provide methods, i. e. <o:p></o:p></span></p><p class=MsoNormal style='line-height:200%'><b><span lang=EN-US>public boolean evaluate(InternalWorkingMemory workingMemory, InternalReadAccessor extractor, Object object, FieldValue value)</span></b><span lang=EN-US>, state, amongst others, a parameter “workingMemory” of type <b>org.drools.common.InternalWorkingMemory</b>. <o:p></o:p></span></p><p class=MsoNormal style='line-height:200%'><span lang=EN-US>When calling <b>workingMemory.getObjects()</b> we receive a “UnsupportedOperationException”. The question is whether it is possible to access facts in a KnwoledgeSession at runtime or not. Alternatively we could provide the objects in question as globals and call workingMemory.getGlobal(), but that seems to me like somewhat bad architecture. <o:p></o:p></span></p><p class=MsoNormal style='line-height:200%'><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal style='line-height:200%'><span lang=EN-US>Any suggestions are welcome.<o:p></o:p></span></p><p class=MsoNormal style='line-height:200%'><span lang=EN-US>Many thanks,<o:p></o:p></span></p><p class=MsoNormal style='line-height:200%'><span lang=EN-US>-Matthias<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>