My understanding is that EJB-QL definition, as per Sun's EJB2.0 specs, is:
"EJB QL :: = select_clause from_clause [where_clause]"
As it stands right now, EJB-QL doesn't support order by clause. This is a
requested feature.
What I don't understand is whether or not jaws.xml is required/used for
JBoss3.0, which is EJB2.0 compliant.
Actually this file looks quite similar to jbosscmp-jdbc.xml. Do we need to
deploy both files for JBoss3.0?
Thanks a lot,
Andronica
PS. Here's what I found on a message from Jboss user list:
"Things to watch out for when switching to CMP2.0 features:
Use jbosscmp-jdbc.xml instead of jaws.xml,
if your EBs use EJB2.0 (jaws.xml is silently ignored)."
So my suggestion for XDoclet engine will be, to NOT include in "jaws.xml"
entity beans CMP2, because these definitions will be ignored by JBoss. Maybe
give some kind of error messages if cmp-version="2.x" and jaws-specific tags
were used. It's just a suggestion, see if that makes sense for you also.
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Dmitri
Colebatch
Sent: Wednesday, March 13, 2002 4:00 PM
To: Andronica Teodorescu; [EMAIL PROTECTED]
Subject: Re: [Xdoclet-user] @jboss:finder-query vs. @ejb:finder
The @jboss:finder-query applies to JAWS. The new JBoss 'order by' extension
to EJB-QL is a separate issue, and as I understand it
is not yet implemented. I can have a look at implementing this tonight -
unless someone corrects me to tell me it isn't implemented
(I had a quick look at the template). Also, as I understand it this feature
is only available in JBoss CVS, and not in either of
the releases, but I could be wrong there.
cheers
dim
----- Original Message -----
From: "Andronica Teodorescu" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, March 14, 2002 8:36 AM
Subject: RE: [Xdoclet-user] @jboss:finder-query vs. @ejb:finder
> I tried what you suggested, but JBoss (3.0) throws an error when invoking
> the custom finder (javax.ejb.FinderException: Unknown query)
> So, I guess is more a JBoss problem, since it's working fine for you in
> 2.4.4.
>
> Thanks a lot,
> Andronica
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, March 13, 2002 1:56 PM
> To: [EMAIL PROTECTED];
[EMAIL PROTECTED]
> Subject: RE: [Xdoclet-user] @jboss:finder-query vs. @ejb:finder
>
>
> I don't know about JBoss 1.3 but we are using JBoss 2.4.4 and I am doing
> this:
>
> First define the ejb:finder as:
> @ejb:finder signature="java.util.Collection findAllCustom()"
>
> And then define jboss:finder-query as:
> @jboss:finder-query name="findAllCustom" query=publicationGroupID < 3
> order by description"
>
> C.
>
>
>
> -----Original Message-----
> From: Andronica Teodorescu [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, March 13, 2002 1:29 PM
> To: [EMAIL PROTECTED]
> Subject: [Xdoclet-user] @jboss:finder-query vs. @ejb:finder
>
>
> Hello,
>
> Can someone please explain how to use these 2 tags?
>
> I am trying to set-up a custom finder for a CMP entity bean. The bean
is
> deployed into JBoss1.3 (alpha) server.
> Also, I would like the finder to return objects ordered by a given
> field. I know, this can be done afterwards, but still ...
>
> So, in @ejb:finder tag, I can define my query using EJB-QL , which
> doesn't support "ORDER BY".
> On the other hand, in @jboss:finder-query tag I have the option to
> specify the query (JAWS syntax) and the "order" field.
> Question: where the query should be defined? In @ejb:finder, or
> @jboss:finder-query or in both?
>
> Using the jboss tag, the generated jaws.xml file contained the finder
> query method, and the order field as well. But the result list is not
> ordered. Further more,
> the query that is performed seems to be the query from @ejb:finder
tag,
> not from @jboss:finder-query tag.
>
> If I do not specify the query for @ejb:finder, at runtime an exception
> is thrown by JBoss. (javax.ejb.FinderException: Unknown query).
>
>
> Here the code for the bean
> * @ejb:bean
> * name="publication/PublicationGroup"
> * display-name="Models a Publication Group"
> * type="CMP"
> * cmp-version="2.x"
> * jndi-name="ejb/publication/PublicationGroup"
> * view-type="local"
> * schema="PublicationGroup"
> * primkey-field="publicationGroupID"
> * @ejb:transaction type="Required"
> * @ejb:finder signature="java.util.Collection findAll()"
> * @ejb:finder signature="java.util.Collection findAllCustom()"
> * @ejb:pk class="java.lang.Long" generate="false"
> *
> * @jboss:table-name "publication_group"
> * @jboss:finder-query
> * name="findAllCustom"
> * query="publicationGroupID < 3"
> * order="description"
> * read-ahead="true"
> * @jboss:create-table "false"
> * @jboss:remove-table "false"
> * @jboss:tuned-updates "true"
> * @jboss:read-only "false"
>
>
> Thanks in advance,
> Andronica
>
>
>
>
>
>
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