[rules-users] Issue with From Clause - Class Cast Error

[tosmun]

Thanks for the fast response! I'll attempt to post as much as I can, splicing
out any case specific info.

The Java code surrounding my invocation is as follows:

=============================
//Get a list of all knowledgebase resources
List<File> kbList = config.getCompleteKBList(); //Note that this is a simply
a collection of absolute file paths containing DRL and RF files
if(kbList == null)
  throw new FrameworksException("Failed to get list of knowledgebase
resources. Configuration returned null");
//Add all of the resources we found
for(File file : kbList)
{
 if(file == null)
   continue;
 if(log.isDebugEnabled())
   log.debug("Adding resource file: " + file.getAbsolutePath());
 if(file.getName().endsWith(KB_FILE_EXT))
   kbBuilder.add(ResourceFactory.newFileResource(file), ResourceType.DRL);
 else if(file.getName().endsWith(RF_FILE_EXT))
   kbBuilder.add(ResourceFactory.newFileResource(file), ResourceType.DRF);
 else
   throw new FrameworksException("Found invalid file in our knowledgebase
list! It was: \"" + file.getAbsolutePath() + "\". This extension is not
supported");
 // Check the builder for errors
 if (kbBuilder.hasErrors())
 {
   throw new FrameworksException("<" + file.getAbsolutePath() + ">: Unable
to compile knowledge base: " + kbBuilder.getErrors().toString());
 }
}
		
KnowledgeBase kb = kbBuilder.newKnowledgeBase();
kb.addKnowledgePackages(kbBuilder.getKnowledgePackages());
=============================

The above line is the point at which the error occurs.

I am using several other rule files, but I have removed them while I am
debugging this issue. I am left with simply this rule file:

=============================
package <removed>.kb.appliances
import	<removed>.ApplianceType;
import	<removed>.ApplianceTypeObject;
import	<removed>.ApplianceTypeObjectHost;
import	<removed>.ApplianceTypeIdentifier;
import java.util.List;

dialect "java";

rule "root_appliance"
ruleflow-group 'initialize-appliance-definitions'
when
	not
	( 
		ApplianceType
		(
			type == ApplianceTypeIdentifier.APPLIANCE_ROOT
		);
	);
then
	ApplianceType appliance = new
ApplianceType(ApplianceTypeIdentifier.APPLIANCE_ROOT, null);
	insert(appliance);
end;

rule "root_host"
no-loop true
ruleflow-group 'initialize-appliance-definitions'
when
	$app:ApplianceType
	(
		type == ApplianceTypeIdentifier.APPLIANCE_ROOT
	);
	not( ApplianceTypeObject() from $app.getObjectTypes());
then
	//Do something
end;
==============================

If there is any more information I can provide please let me know. I believe
that is everything.



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