http://www.theserverside.com Most recent forum messages en Jive Forums Silver 5.5.30 (www.jivesoftware.com) Sat, 18 May 2013 13:11:14 -0400 http://www.theserverside.com/discussions/thread.tss?thread_id=32896 In order your DB constraint to work, the UPDATE should be performed when you entity.setName("THIS ONE IS DUPLICATED").
If this happened, performance would...]]> Fri, 01 Apr 2005 08:23:30 -0500 Fri, 01 Apr 2005 08:23:30 -0500 Fri, 01 Apr 2005 08:23:30 -0500 Apr 1, 2005 Martin Straus 0 http://www.theserverside.com/discussions/thread.tss?thread_id=32896 My bean is CMP, so there is no code written by me which inserts or updates the table, the container generates it. The create method only sets the fields, and...]]> Thu, 31 Mar 2005 11:29:15 -0500 Thu, 31 Mar 2005 11:29:15 -0500 Thu, 31 Mar 2005 11:29:15 -0500 Mar 31, 2005 Ivan Nemeth 1 http://www.theserverside.com/discussions/thread.tss?thread_id=32896 NOT safe, in fact! You should not call lifecicle methods by yourself. They're meant to be called by the lifecicle manager... that is the container.
What method in the EJB performs the INSERT in the DB? Please check this is done...]]> Thu, 31 Mar 2005 07:58:51 -0500 Thu, 31 Mar 2005 07:58:51 -0500 Thu, 31 Mar 2005 07:58:51 -0500 Mar 31, 2005 Martin Straus 2 http://www.theserverside.com/discussions/thread.tss?thread_id=32896 Finally I've found a solution, I simply call ejbStore from the bean's ejbPostCreate method and it immediately throws an exception which I can catch. What do you think about this? It seems to me safe.

Ivan]]> Wed, 30 Mar 2005 16:33:00 -0500 Wed, 30 Mar 2005 16:33:00 -0500 Wed, 30 Mar 2005 16:33:00 -0500 Mar 30, 2005 Ivan Nemeth 3 http://www.theserverside.com/discussions/thread.tss?thread_id=32896 Ivan]]> Wed, 30 Mar 2005 16:21:04 -0500 Wed, 30 Mar 2005 16:21:04 -0500 Wed, 30 Mar 2005 16:21:04 -0500 Mar 30, 2005 Ivan Nemeth 4 http://www.theserverside.com/discussions/thread.tss?thread_id=32896 I have a facade which creates a new bean but with an already existing Name (Name must be unique). In the facade's newBean method (which is called by the client) I call the home interface's create() method. It looked something like...]]> Wed, 30 Mar 2005 15:59:05 -0500 Wed, 30 Mar 2005 15:59:05 -0500 Wed, 30 Mar 2005 15:59:05 -0500 Mar 30, 2005 Ivan Nemeth 5 http://www.theserverside.com/discussions/thread.tss?thread_id=32896 If you have a facade, feel free to do it. Wrap the SQLException within some other application relative exception, so the client catches this rather than...]]> Wed, 30 Mar 2005 13:11:24 -0500 Wed, 30 Mar 2005 13:11:24 -0500 Wed, 30 Mar 2005 13:11:24 -0500 Mar 30, 2005 Martin Straus 6 http://www.theserverside.com/discussions/thread.tss?thread_id=32896 I've another problem. So if I use an id as a primary key, but I have a field (for example NAME) which I want to be unique, how can I manage it?
I...]]> Tue, 29 Mar 2005 14:17:10 -0500 Tue, 29 Mar 2005 14:17:10 -0500 Tue, 29 Mar 2005 14:17:10 -0500 Mar 29, 2005 Ivan Nemeth 7 http://www.theserverside.com/discussions/thread.tss?thread_id=32896 Hi all,if I use an entity bean I can't change value of the primary key field... My first question is that is this right what I wrote.
This is my understanding. When learning EJBs, I attempted to create an EJB with a mutable...]]> Mon, 28 Mar 2005 15:34:28 -0500 Mon, 28 Mar 2005 15:34:28 -0500 Mon, 28 Mar 2005 15:34:28 -0500 Mar 28, 2005 Aaron Craven 8 http://www.theserverside.com/discussions/thread.tss?thread_id=32896
if I use an entity bean I can't change value of the primary key field. I suppose it's the desired behaviour of EJBs. So I think it's not a good design to use the name field of the modelled object as a primary key because it can change...]]> Mon, 28 Mar 2005 14:44:39 -0500 Mon, 28 Mar 2005 14:44:39 -0500 Mon, 28 Mar 2005 14:44:39 -0500 Mar 28, 2005 Ivan Nemeth 9