I'd like to observe the changes being made to persisted entities.
I'm currently using an EntityHome instance for entity management and have
something like this.
| @Override
| public String update()
| {
| MyObj old = (MyObj)this.getEntityManager().find(MyObj.class,
this.getInstance().getId());
| MyObj incoming = this.getInstance();
| System.out.println("OLD: " + old.getDescription() + ", NEW: " +
incoming.getDescription() );
| return super.update();
| }
|
I've seen however, that even though the entity instance isn't persisted through
to the underlying DB yet, the entitymanager is being clever and finding the
instance coming in from the JSF components.
To enable me to see the differences between the a) the data actually in the DB
and b) the data currently known to the entitymanager.....
I think I need to get hold of a new fresh entitymanager instance, one which
doesn't have a cache of anything related.
Please could somebody explain how I may get such an instance. OR, if you have
any better places in mind for where I can observe this data flow.
many thanks and kindest regards
Rob
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