Re: Can Entity Bean Reference Another Entity Bean using Lookup

[Alex Paransky]

Yes, it helps a lot.  You are missing the correct spelling, your line should read:   "java:comp/env" + what ever name you have given your reference   For example if the name in deployment descriptor is "ejb/Type", then your line should be:   "java:comp/env/ejb/Type"   -AP_     -----Original Message----- From: A mailing list for Enterprise JavaBeans development [mailto:[EMAIL PROTECTED]]On Behalf Of Glenn Dickson Sent: Sunday, January 06, 2002 10:13 PM To: [EMAIL PROTECTED] Subject: Re: Can Entity Bean Reference Another Entity Bean using Lookup ok let me put it you this way, can I issue this within an Breed Local Entity Bean :   void somemethod() {     InitialContext i = new InitialContext();     TypeHome th = i.lookup("java:/comp/ejb/Type");   // get NameNotFoundException here }       Does that help?       ----- Original Message ----- From: Dmitri Colebatch To: [EMAIL PROTECTED] ; [EMAIL PROTECTED] Sent: Monday, January 07, 2002 1:48 PM Subject: Re: Can Entity Bean Reference Another Entity Bean using Lookup definately sounds like the reference hasn't been set up by the container, for whatever reason.    something else that might help you is a jndi browser - I know JBoss provides one, and would guess that most of the containers provide something in this area...    cheers dim ----- Original Message ----- From: Glenn Dickson To: [EMAIL PROTECTED] Sent: Monday, January 07, 2002 4:07 PM Subject: Re: Can Entity Bean Reference Another Entity Bean using Lookup ok sure I shall post more later but I don't have it with me.   If it helps my error is java.naming.NameNotFound error ----- Original Message ----- From: Dmitri Colebatch To: [EMAIL PROTECTED] Sent: Monday, January 07, 2002 12:20 PM Subject: Re: Can Entity Bean Reference Another Entity Bean using Lookup sorry - didn't mean it to come across like that... do send it over and I'll have a look at it (o:   the reason I posted it back onto the list, is that its a good idea to keep things on the list so that others can learn as well.   cheers dim ----- Original Message ----- From: [EMAIL PROTECTED] To: Dmitri Colebatch Sent: Monday, January 07, 2002 3:09 PM Subject: Re: Can Entity Bean Reference Another Entity Bean using Lookup sorry if I did provide you with that information but I didn't know you wanted it. seems that you are not very happy so maybe we'll give it miss ----- Original Message ----- From: Dmitri Colebatch To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Sent: Monday, January 07, 2002 12:04 PM Subject: Re: Can Entity Bean Reference Another Entity Bean using Lookup sorry - somehow lost the list in all this... ----- Original Message ----- From: Dmitri Colebatch To: [EMAIL PROTECTED] Sent: Monday, January 07, 2002 3:04 PM Subject: Re: Can Entity Bean Reference Another Entity Bean using Lookup maybe if you posted a little more info - specifically the stack trace you get, ejb container you're using, and relevant bits of source code, people could provide a little more feedback.   cheers dim ----- Original Message ----- From: [EMAIL PROTECTED] To: Dmitri Colebatch Sent: Monday, January 07, 2002 2:41 PM Subject: Re: Can Entity Bean Reference Another Entity Bean using Lookup The entity bean breed does have a reference to OtherBean for sure.   There are 2 senerios :   1. Letting Breed Entity bean set it own Type CMR 2. Getting a controller the Session bean to set the Type CMR on the Breed Entity. For example session bean contains (breed.setType(type)       ----- Original Message ----- From: Dmitri Colebatch To: [EMAIL PROTECTED] ; [EMAIL PROTECTED] Sent: Monday, January 07, 2002 11:00 AM Subject: Re: Can Entity Bean Reference Another Entity Bean using Lookup what is the jndi you are looking up?  is it by any chance "java:comp/env/ejb/OtherEJB" or something similar (the comp/env/ejb bit)?  If so, then what is happening is the session bean has a reference to the other entity bean, but the entity bean does not.  The answer is then in your deployment descriptors.   there no doubt could be 10 other answers, but this springs to mind.   hth dim ----- Original Message ----- From: Glenn Dickson To: [EMAIL PROTECTED] Sent: Monday, January 07, 2002 1:28 PM Subject: Can Entity Bean Reference Another Entity Bean using Lookup Hi all   Just wondering :   Is it possible for a local entity bean to contain code that lookups another local entity.   Setting Description:   An entity bean called Breed is must contain entity Type. I pass a Value Object to the Breed bean.  The bean :     obtains the TypeId PK from the VO.     looks up the JNDI name (errors here, see description below) for the TypeHome     finds the Type record using the TypeId (PK) via the FindbyPrimaryKey function for the TypeHome.     sets it type CMR to the found type record   Error Description: but an error occurs here while doing the lookup. It says, that the JNDI name cannot be found.   However, if I move this to a session bean which does exactly the same. It works. For clarity the session bean:     accepts the Value Object     obtains the TypeId PK from the VO.     looks up the JNDI name  for the TypeHome (works!!!!)     finds the Type record using the TypeId (PK) via the FindbyPrimaryKey function for the TypeHome.     sets it type CMR to the found Type record   Why???????? Does it work in the session and not entity.   TIA Glenn