[ https://issues.apache.org/jira/browse/ARIES-1270?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Christian Schneider updated ARIES-1270: --------------------------------------- Description: How to reproduce: Follow installation instructions of my tasklist-cdi tutorial https://github.com/cschneider/Karaf-Tutorial/tree/master/tasklist-blueprint-cdi - After installation the example works - refresh net.lr.tasklist.cdi.tasklist-model - When accessing http://localhost:8181/tasklist you get the exception below - After a restart of karaf it works again So the problem seems to be that with a refresh you get a new classloader for the model bundle but the persistence unit (EnityManagerFactory) is not renewed so it still uses the old classloader. I am not yet sure if the problem is in jpa.container or jpa.container.context. I will try to recreate this error in an itest for jpa so we can track it easily. --- java.lang.IllegalArgumentException: Type specified for TypedQuery [net.lr.tasklist.model.Task] is incompatible with query return type [class net.lr.tasklist.model.Task] at org.hibernate.ejb.AbstractEntityManagerImpl.resultClassChecking(AbstractEntityManagerImpl.java:702) at org.hibernate.ejb.AbstractEntityManagerImpl.createQuery(AbstractEntityManagerImpl.java:303) at was: How to reproduce: Follow installation instructions of my tasklist-cdi tutorial https://github.com/cschneider/Karaf-Tutorial/tree/master/tasklist-cdi - After installation the example work - refresh net.lr.tasklist.cdi.tasklist-model - When accessing http://localhost:8181/tasklist you get the exception below - After a restart of karaf it works again So the problem seems to be that with a refresh you get a new classloader for the model bundle but the persistence unit (EnityManagerFactory) is not renewed so it still uses the old classloader. I am not yet sure if the problem is in jpa.container or jpa.container.context. I will try to recreate this error in an itest for jpa so we can track it easily. --- java.lang.IllegalArgumentException: Type specified for TypedQuery [net.lr.tasklist.model.Task] is incompatible with query return type [class net.lr.tasklist.model.Task] at org.hibernate.ejb.AbstractEntityManagerImpl.resultClassChecking(AbstractEntityManagerImpl.java:702) at org.hibernate.ejb.AbstractEntityManagerImpl.createQuery(AbstractEntityManagerImpl.java:303) at > ClasscastException or incompatible type when persistence unit bundle is > refreshed > --------------------------------------------------------------------------------- > > Key: ARIES-1270 > URL: https://issues.apache.org/jira/browse/ARIES-1270 > Project: Aries > Issue Type: Bug > Components: JPA > Affects Versions: jpa-container-1.0.2, jpa-container-context-1.0.4, > jpa-container-context-1.0.3 > Reporter: Christian Schneider > Assignee: Christian Schneider > Priority: Critical > Fix For: jpa-container-1.0.3, jpa-container-context-1.0.5 > > > How to reproduce: > Follow installation instructions of my tasklist-cdi tutorial > https://github.com/cschneider/Karaf-Tutorial/tree/master/tasklist-blueprint-cdi > - After installation the example works > - refresh net.lr.tasklist.cdi.tasklist-model > - When accessing http://localhost:8181/tasklist you get the exception below > - After a restart of karaf it works again > So the problem seems to be that with a refresh you get a new classloader for > the model bundle but the persistence unit (EnityManagerFactory) is not > renewed so it still uses the old classloader. > I am not yet sure if the problem is in jpa.container or jpa.container.context. > I will try to recreate this error in an itest for jpa so we can track it > easily. > --- > java.lang.IllegalArgumentException: Type specified for TypedQuery > [net.lr.tasklist.model.Task] is incompatible with query return type [class > net.lr.tasklist.model.Task] > at > org.hibernate.ejb.AbstractEntityManagerImpl.resultClassChecking(AbstractEntityManagerImpl.java:702) > at > org.hibernate.ejb.AbstractEntityManagerImpl.createQuery(AbstractEntityManagerImpl.java:303) > at -- This message was sent by Atlassian JIRA (v6.3.4#6332)