KnowledgeAgent exception while trying to deserialize KnowledgeDefinitionsPackage thrown by a Rules service

[eleni.papadopoulou]

Hi,

I have implemented a Rules service which uses a KnowldgeAgent and also references the rules through a ChangeSet.xml file.

This service is invoked by another switchyard service, but when this happens I get the following exception:

KnowledgeAgent exception while trying to deserialize KnowledgeDefinitionsPackage  : java.lang.RuntimeException: KnowledgeAgent exception while trying to deserialize KnowledgeDefinitionsPackage 

Caused by: java.net.UnknownHostException: C

The ChangeSet.xml tries to load the rules from a package which contains two drl files and I  have implemented this package using the following code:

  File file=null;

   KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();

   kbuilder.batch().add( ResourceFactory.newClassPathResource("ValidateCharging.drl", RulesPackageCreator.class), ResourceType.DRL).add(ResourceFactory.newClassPathResource("ValidateBillingType.drl",          RulesPackageCreator.class),ResourceType.DRL).build();

                      if ( kbuilder.hasErrors() ) {

                                System.err.println( kbuilder.getErrors().toString() );

                       }

                     KnowledgePackage knowledgePackage = kbuilder.getKnowledgePackages().iterator().next();

               FileOutputStream fos = null;

               ObjectOutputStream out = null;

               file = new File("myRulesPackage.pkg");

               fos = new FileOutputStream(file);

                try

                {      

                   DroolsStreamUtils.streamOut(fos, knowledgePackage);

                }

                catch (IOException e)

                {

                  System.out.println("Cannot serialize object");

                  throw new Exception(e);

               }

               finally

                 {

                   try

                    {

                   fos.close();

                     }

                   catch (IOException e)

                           {

                              System.out.println("Exception: "+e);

                           }

                      }

The drools version I used to compile the package is the same with the version I used to execute the package, as I created  a new Eclipse Drools Runtime environment, pointing to modules/org/drools/main directory.

Attached you can find the ChangeSet.xml file and the Switchyard.xml file.

Thank you in advance!!

[jeffdelong]

Try inserting another / into the path, i.e.

file:///C:\switchyard-as7-0.6\bin\myRulesPackage.pkg

As per the URL syntax:
protocol://hostname/file
Since hostname part in blank in this case, you need another separator, otherwise it thinks C is the name of the host.