[weld-issues] [JBoss JIRA] (WELD-958) URLScanner parses the wrong META-INF/beans.xml files if the parent classloader has a META-INF/beans.xml file

URLScanner parses the wrong META-INF/beans.xml files if the parent classloader has a META-INF/beans.xml file ------------------------------------------------------------------------------------------------------------ Key: WELD-958 URL: https://issues.jboss.org/browse/WELD-958 Project: Weld Issue Type: Bug Affects Versions: 1.1.2.Final Reporter: Geoffrey De Smet Assignee: Ales Justin Priority: Critical Fix For: 1.2.0.Beta1 Note that WELD-714 (fixed for 1.1.0.CR1) does NOT fix this in weld 1.1.2.Final. Here's the code that causes the problem: {code} public class URLScanner { ... protected void handleArchiveByFile(File file, ...) ... { ... ZipFile zip = new ZipFile(file); Enumeration<? extends ZipEntry> entries = zip.entries(); // Replace out the default classloader with one for the zip URLClassLoader classLoader = new URLClassLoader(new URL[] { file.toURI().toURL() }); // PROBLEM PART 1: delegates first to parent classloader while (entries.hasMoreElements()) { ZipEntry entry = entries.nextElement(); String name = entry.getName(); handle(..., classLoader.getResource(name), ...); // PROBLEM PART 2: if parent classloader contains that name, the file content is ignored! } ... } ... } {code} Here's what's happens with this input: {code} file = /tmp/tomcat-embedded-6/work/arquillian-tomcat-embedded-6/localhost/guvnor-webapp-5.3.0-SNAPSHOT/WEB-INF/lib/seam-persistence-api-3.1.0.Beta2.jar classLoader = URL is file:/tmp/tomcat-embedded-6/work/arquillian-tomcat-embedded-6/localhost/guvnor-webapp-5.3.0-SNAPSHOT/WEB-INF/lib/seam-persistence-api-3.1.0.Beta2.jar for each entry, when: name = "META-INF/beans.xml" classLoader.getResource(name) = file:/home/gdesmet/projects/jboss/forked-guvnor/guvnor-webapp/target/classes/META-INF/beans.xml // WRONG // Should be = .../seam-persistence-api-3.1.0.Beta2.jar!META-INF/beans.xml {code} As a direct result, URLScanner.handle(...) handles the same wrong META-INF/beans.xml file multiple times (one for each real META-INF/beans.xml): {code} Handle file META-INF/beans.xml from file:/home/gdesmet/projects/jboss/forked-guvnor/guvnor-webapp/target/classes/META-INF/beans.xml Handle file META-INF/beans.xml from file:/home/gdesmet/projects/jboss/forked-guvnor/guvnor-webapp/target/classes/META-INF/beans.xml Handle file META-INF/beans.xml from file:/home/gdesmet/projects/jboss/forked-guvnor/guvnor-webapp/target/classes/META-INF/beans.xml ... {code} For more info, see this gist: https://gist.github.com/1180446