Re: Dynamic Query

[Gianny Damour]

I tried to defined the contract of the custom API as closely as possible 
to the Query interface defined by JPA. There are some contracts, which 
cannot be implemented such as definition of parameters by names, 
execution of update or delete statements, yet this is pretty close.

Thanks,
Gianny
Dain Sundstrom wrote:

Very cool.  I haven't been following JPA (EJB3 Persistence) that  
closely, so I'm curious how closely this matches up what's coming in  
EJB3.

-dain

On Mar 2, 2006, at 4:02 AM, Gianny Damour wrote:

Hi Phani,

Sorry for this late reply - I was focused on completing the  
implementation of dynamic queries, which is now available in trunk.

ModuleCMPEngine is not DayTrader specific. Basically, the idea it  to 
bind a specific GBean to the ENC of the component from which you  
need to perform the dynamic query. "ModuleCmpEngine" is the  j2eeType 
of the GBean to be bound; its type is  
"org.openejb.entity.cmp.ModuleCmpEngine"; its J2EE module type is  
"EJBModule"; its name is "moduleCmpEngine" and it is part of the  EJB 
module defining the CMP for which you need to execute dynamic  EJBQL 
queries. So, to bind it to the ENC you use something like this:

          <gbean-ref>
              <ref-name>cmp/QueryManager</ref-name>  -- ENC name
              <ref-type>ModuleCmpEngine</ref-type> -- j2eeType
              <proxy-type>org.openejb.entity.cmp.ModuleCmpEngine</ 
proxy-type> -- GBean type
              <gbean-locator>
                  <module>name_of_the_ejb_module</module> -- name  of 
the EJB module
                  <type>EJBModule</type> -- J2EE module type
                  <name>moduleCmpEngine</name> -- name of the GBean
              </gbean-locator>
          </gbean-ref>

Thanks,
Gianny