0 Replies Latest reply on Jan 10, 2006 5:56 AM by marco bassini

    entity update, unsaved-value mapping was incorrect

    marco bassini Newbie


      I'm using jboss-4.0.3SP1 and PostgreSQL 8.0.
      I created an entity bean (ProductsEBean) which has
      a productId column and a version (@Version) column.
      I created also a stateless session bean with a method
      saveAll() which takes a List of ProductsEBean as argument
      and has a @TransactionAttribute annotation.
      This method persist all entity beans found in the List,
      but it works only the first time I try to call it.
      The second time it throws an javax.ejb.EJBException with this
      message :
      Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [it.aliaslab.crb.ejb3.entity.ProductsEBean#]

      If I remove the version column in the entity bean, all
      seems to work fine, and the exception is never thrown.

      I tried to configure my persistence.xml file, adding
      the property :
      but this does not works.

      what's the reason of this error?
      thanks to everyone.