[rules-users] OSGI, classloading, and imports in KnowledgeBuilder
Lasse.Wallentin at APCC.com
Lasse.Wallentin at APCC.com
Fri Sep 4 08:16:20 EDT 2009
Hi Marcel,
> I'm running into the exact same problem as you did. I have an OSGI
bundle
> where I embed Drools and all the dependencies and I'm deploying it on
FUSE
> 4.0 . I tried passing the classloader posted on this thread to Drools
but
> still the same problem. I don't understand when you talk about the
imports
> where they should be placed and which imports.
The imports I was talking about was the ones embeded in the Descision
tables.
Depending on your spreadsheet editor the imports may have a tendency to
hide themselves ;-(
A neat trick when working with Decision Tables is to convert them to the
rule format.
Something like the below lines will achieve this:
public String compile(String path) {
String drlStr = "";
try {
Resource pathResource =
ResourceFactory.newClassPathResource(path, getClass());
DecisionTableConfiguration dtableconfiguration =
KnowledgeBuilderFactory.newDecisionTableConfiguration();
dtableconfiguration.setInputType(DecisionTableInputType.XLS);
drlStr =
DecisionTableFactory.loadFromInputStream(pathResource.getInputStream(),
dtableconfiguration);
} catch (IOException e) {
e.printStackTrace();
}
return drlStr;
}
Kind regards
Lasse Wallentin
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