Module org.javassist not excluded when persistence.xml contains property <property name="jboss.as.jpa.providerModule" value="application" /> -------------------------------------------------------------------------------------------------------------------------------------------- Key: WFLY-5743 URL: https://issues.jboss.org/browse/WFLY-5743 Project: WildFly Issue Type: Bug Components: Class Loading Affects Versions: 9.0.2.Final Environment: OS: Windows 7 JVM: jdk1.7.0_79, WF: wildfly-9.0.2.Final DB: h2 Reporter: Juraj Staník Assignee: David Lloyd Attachments: class-loading-problem.zip Excluding the module 'org.javassit' in the jboss-deployment-structure.xml does not work correctly for all modules in EAR when shipping custom version of Hibernate and Javassist and setting property <property name="jboss.as.jpa.providerModule" value="application" /> in the persistence.xml. In case of the following EAR structure: {noformat} EAR |`-- lib | |`-- javassist-3.20.0-GA.jar | `-- <hibernate 4.2.19 jars> |`-- META-INF | |`-- jboss-deployment-structure.xml | `-- application.xml |`-- EJB-JAR | `-- META-INF | `-- persistence.xml `-- WAR {noformat} and the content of the jboss-deployment-structure.xml {code:title=jboss-deployment-structure.xml|xml} <?xml version="1.0" encoding="UTF-8"?> <jboss-deployment-structure xmlns="urn:jboss:deployment-structure:1.1"> <ear-subdeployments-isolated>false</ear-subdeployments-isolated> <deployment> <exclusions> <module name="org.hibernate" /> <module name="org.javassist" /> </exclusions> </deployment> </jboss-deployment-structure> {code} and persistence.xml {code:title=persistence.xml|xml} <?xml version="1.0" encoding="UTF-8"?> <persistence xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd" version="2.1"> <persistence-unit name="cce-example" transaction-type="JTA"> <provider>org.hibernate.ejb.HibernatePersistence</provider> <jta-data-source>jdbc/CCE_DS</jta-data-source> <properties> <property name="jboss.as.jpa.providerModule" value="application" /> </properties> </persistence-unit> </persistence> {code} The module EJB-JAR loads javassist classes not from the bundled {{EAR/lib/javassist-3.20.0-GA.jar}} but from {{<WF>/modules/system/layers/base/org/javassist/main/javassist-3.18.1-GA.jar}}