Entitymanager merge not updating record
I solved that but still can wrap my head around why it has to modify the department table.If you are loading large binary objects (BLOBs), such as pictures.Serializable The department looks like @Entity @Table(name = "DEPT") public class Dept implements Serializable And my EJB3 looks like @Stateful @Name("workflow") @Scope(Scope Type.This is shown in the figure below: The find method when invoked will return an instance of an Todo as well as automatically retrieving the Todo List, User, and Role entities associated with the instance and populates them into their respective Item entity properties.All these relationship annotations include @Many To One, @One To Many, and @Many To Many annotations would need to have a fetch element to control fetch modes just like the @Basic annotation discussed in the previous section.is called after a record is inserted into database, but before transaction commit.
There are a few examples available but none specific to this requirement. Thanks in advance, Jack If you want the same phone number, then you need to use the same one, not a new instance. If the EJB is a remote bean, then you would need to first find the phone number and call merge in the create customer instead of persist.Note that the Entity Manager will issue an additional SELECT statement in order to retrieve the picture data when the lazily loaded field is first accessed.You could run into a situation where all entity data in an application is lazily loaded.Using the @Basic annotation to specify the column fetch-mode is the most straight forward mechanism.For example, if in a online retail site, we wanted to use lazy fetching for the picture property on the Product or SKU entity it would be done in the following manner: In this case, the picture data would be automatically loaded from the database when the property is first accessed through the get Picture method.