Application exception in ejbSelect

[gopi chillakuru]

We can throw application exception from ejbSelect<Method>, I don't know how we can do this, as container implements this method based on ejb-ql in the deployment descriptor and the declaration in the bean class. Can we throw application exception in ejb-ql? Can any one know how we can throw application exception from ejbSelect<Method>.

[Malini Raja]

Hi,
The ejbSelect methods can be called
1. by the container/find methods /home business methods
in the pooled state or
2.by business methods in the ready state.

All application exceptions are for the benefit of the client
that called the find/home business/business methods from the
Home or component interfaces. The application exception (generally
business logic exceptions)thrown by the select method eg.-FinderException is sent by the container as is to the client so that it can be handled.
The container implements the abstract select methods in the final implementaion of the(abstract) bean class (along with the find methods) using the ejbql queries in the DD at the time of deployment.How the container implements the bean does not affect the kind of exception thrown,
perhaps the client supplied parameters used in the select method.

Malini

[Thiru Thangavelu]

Hi Malini,
What were your references when you took the SCBCD exam? Just curious.

[Malini Raja]

Mainly HFEJB,EJB2.0 Specs,Mikalai Zaikin's notes,
Enterprise Javabeans by Richard Monson-haefel,
and last but not least Javaranch.You can find
more here.

http://www.valoxo.ch/jr/SCBCD_Links.html