Michael Schnitzler created JBRULES-3347: ------------------------------------------- Summary: ResourceChangeScanner trying to scan rule file when instead the change set contains a package only Key: JBRULES-3347 URL: https://issues.jboss.org/browse/JBRULES-3347 Project: Drools Issue Type: Bug Security Level: Public (Everyone can see) Components: drools-core Affects Versions: 5.3.0.Final Reporter: Michael Schnitzler Assignee: Mark Proctor 1.) Create a KnowledgeBase using a rule file (DRL) on the classpath. The rule file has to contain a Drools function. 2.) Serialize the the KnowledgeBase to the file system. 3.) Create a changeset definition that adds the serialized package only. 4.) Create a client that creates a KnowledgeAgent and apply the changeset. The class path should not contain the original rule files. 5.) Start the ResourceChangeScanner This will lead to a NPE in the ResourceChangeScannerImpl: Exception in thread "Thread-0" java.lang.NullPointerException at org.drools.io.impl.ClassPathResource.getURL(ClassPathResource.java:124) at org.drools.io.impl.ClassPathResource.getLastModified(ClassPathResource.java:139) at org.drools.io.impl.ResourceChangeScannerImpl.scan(ResourceChangeScannerImpl.java:166) at org.drools.io.impl.ResourceChangeScannerImpl$ProcessChangeSet.run(ResourceChangeScannerImpl.java:311) at java.lang.Thread.run(Unknown Source) The reason for this seems to be: In private method KnowledgeAgentImpl.buildResourceMapping the function's resource (the DRL file) is retrieved and added to the registered resources . But the client is not distributed with the rule file on its classpath. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.jboss.org/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira