[jboss-user] [EJB 3.0] - Update exiting BLOB does not work

Hi all, I have a problem updating a existing or null BLOB. I run jboss-4.2.1.GA (all-config) with its EJB3 implementation and MySQL 5.x with mysql-connector-java-5.0.7-bin.jar-driver. I have an entity Signature with a unidirectional relationship to Image (which holds the BLOB): | public class Signature ... | | @OneToOne(cascade = {CascadeType.PERSIST, CascadeType.MERGE}, fetch = FetchType.EAGER) | @JoinColumns({ | @JoinColumn(name="image_id_fk", referencedColumnName="id") | }) | public com.genloop.base.ImageImpl getImage() { | return this.image; | } | | | public class Image ... | | @Lob | @Column(name = "image", columnDefinition="MEDIUMBLOB") | //(a)org.hibernate.annotations.Cache(usage = org.hibernate.annotations.CacheConcurrencyStrategy.NONE) -> I tried this | public java.sql.Blob getImage() { | return this.image; | } | In a SLSB, I try a entityManager.merge(aSignagure) and all changes of Signature and Image (e.g. a field "fileName") will update to the DB, except. The BLOB. I have done a little debugging and I saw, that the getImage() was not called after entityManager.merge(). Then I can see something about XYZLoader that (I think so...) fills the entity-bean with the data of the database. This trace calls setImage(Blob) with the old BLOB or (if it was null) with null. What could I do? Thanks, Carsten View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4120058#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...