[rules-users] Drools 5 - how create Logger for Template File based rules?

[chris@twc]

I'm trying to figure out how I can create a Logger to log rule activations
for my Template File code. I followed the examples to successfully create a
Logger for DRL and Decision Table examples. Apparently, to create a Logger,
the KnowledgeRuntimeLoggerFactory methods take a
KnowledgeRuntimeEventManager type, which StatefulKnowledgeSession
implements. But, for the Template File examples, the StatefulSession from
the "unstable" drools-core *does not* implement this interface. SEE the code
examples below - how do I create a Logger for my Template File code?


//#### DRL FILE & EXCEL FILE EXAMPLE FOR CREATING A SESSION AND FIRING THE
RULES:

//#### CREATING A RULES LOGGER WORKS



// populate working memory
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(...[DRL or DTABLE resources]...);
KnowledgeBase knowledgeBase = KnowledgeBaseFactory.newKnowledgeBase();
knowledgeBase.addKnowledgePackages(kbuilder.getKnowledgePackages());
// create session
StatefulKnowledgeSession rulesSession =
knowledgeBase.newStatefulKnowledgeSession();
KnowledgeRuntimeLogger rulesLogger =
KnowledgeRuntimeLoggerFactory.newConsoleLogger(rulesSession);
//<<CREATE LOGGER!
FactHandle factHandle = rulesSession.insert(myFact);
// fire the rules
rulesSession.fireAllRules();


//#### TEMPLATE FILE EXAMPLE FOR CREATING A SESSION AND FIRING THE RULES:

//#### CREATING A RULES LOGGER DOES NOT COMPILE!



// populate working memory
ExternalSpreadsheetCompiler converter = new ExternalSpreadsheetCompiler();
InputStream spreadsheetStream = ...
InputStream templateFileStream = ...
String drl = converter.compile(spreadsheetStream, templateFileStream, 3, 3);
PackageBuilder builder = new PackageBuilder();
builder.addPackageFromDrl(new StringReader(drl));
RuleBase templateRuleBase = RuleBaseFactory.newRuleBase();
templateRuleBase.addPackage(builder.getPackage());
// create session
StatefulSession rulesSession = templateRuleBase.newStatefulSession();
KnowledgeRuntimeLogger rulesLogger =
KnowledgeRuntimeLoggerFactory.newConsoleLogger(rulesSession);//<<DOESN'T
COMPILE!
FactHandle factHandle = rulesSession.insert(myFact);
// fire the rules
rulesSession.fireAllRules();

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