[jboss-jira] [JBoss JIRA] (JBRULES-2293) Classpath resources being scanned by ResourceChangeScanner could cause improper resource removal

Classpath resources being scanned by ResourceChangeScanner could cause improper resource removal ------------------------------------------------------------------------------------------------ Key: JBRULES-2293 URL: https://issues.jboss.org/browse/JBRULES-2293 Project: Drools Issue Type: Bug Security Level: Public(Everyone can see) Components: drools-core Affects Versions: 5.0.1.FINAL Environment: Windows XP Java 5 Running in Oracle OC4J 10.1.3.2 Reporter: Steve Ronderos Assignee: Esteban Aliverti Fix For: 5.3.2.Final, 5.4.0.Beta2 Attachments: fix_for_classpath_resources.patch I encountered an issue today with my KnowledgeAgent removing resources from its RuleBase shortly after creating it. I have the ResourceChangeScanner running in my application. I tracked the issue back to the scan() method in ResourceChangeScannerImpl. It appears that the method is trying to identify resources that are no longer available and remove them from both the RuleBase and future scans. To do this it is checking lastModified on the resource and on a result of 0 removing the resource. The resources that I configured in my change-set definitely still exist, but due to URL handler implementation provided by my classloader, getLastModified always returns 0. (The resource I'm retrieving is coming from a jar that is in my application's classpath and the URL handler implementation is oracle.classloader.SharedCodeSourceURL) Full Email Group trail: http://www.nabble.com/Issue-with-ResourceChangeScanner-td25792358.html Michael recommends to never scan classpath resources.