Class JpaEntityVersionListener

All Implemented Interfaces:
org.hibernate.event.spi.PreDeleteEventListener, org.hibernate.event.spi.PreInsertEventListener, org.hibernate.event.spi.PreUpdateEventListener

public class JpaEntityVersionListener extends Object implements org.hibernate.event.spi.PreInsertEventListener, org.hibernate.event.spi.PreDeleteEventListener, org.hibernate.event.spi.PreUpdateEventListener
Listen on changes on child- and root entities and updates the current entity version of the root. This support a multiple level parent-child relationship, where all parents needs the entity version to be updated in case it was effectively changed. The traversing is stopped at that point when it is detected that parent entity version is the same one. It is based on an assumption that it may happen that one parent entity could be extracted into "parent A -> parent B -> child" format. Then the change (insertion, deletion or update) of the child should bump the entity version of both parent B and parent A.
  • Field Details

  • Constructor Details

    • JpaEntityVersionListener

      public JpaEntityVersionListener()
  • Method Details

    • updateEntityVersion

      public void updateEntityVersion(Object entity) throws org.hibernate.HibernateException
      Traverse from current entity through its parent tree and update the entity version of it. Stop if non-changed parent is found.
    • onPreInsert

      public boolean onPreInsert(org.hibernate.event.spi.PreInsertEvent event)
      Specified by:
      onPreInsert in interface org.hibernate.event.spi.PreInsertEventListener
    • onPreDelete

      public boolean onPreDelete(org.hibernate.event.spi.PreDeleteEvent event)
      Specified by:
      onPreDelete in interface org.hibernate.event.spi.PreDeleteEventListener
    • onPreUpdate

      public boolean onPreUpdate(org.hibernate.event.spi.PreUpdateEvent event)
      Specified by:
      onPreUpdate in interface org.hibernate.event.spi.PreUpdateEventListener