----- Original Message -----
Sent: Thursday, June 05, 2003 12:59
PM
Subject: Re: Reg CMR EJB 2.0
Hi Vikram
I'm assuming you want the method getEntityB(
"value of detail 1" ) to be a member of Entity A.
Here's a way of doing it. Not sure if it's the
best way.
/**
* @return An instance of EntityBRemote with
its <code>detailOne</code> field
* equal to
<code>detail1</code>. Returns <code>null</code> if no
such EntityB
* exists or no such EntityB exists in this
Entity A's collection of Entity Bs.
*/
public EntityBRemote getEntityB(String
detail1){
EntityBRemote
returnValue = null;
EntityBHome entityBHome =
null;
EntityBRemote entityBRemote =
null;
Collection entityBCollection =
null;
/* Let's suppose you have
another method you can call for
* retrieving the Home
interface of Entity B.
*/
entityBHome =
getEntityBHome();
try{
entityBRemote = entityBHome.findByDetailOne(detail1);
/* Note
that I think you should change your method name from
*
getEntityB() to getEntityBs()
*/
entityBCollection = getEntityB();
if(entityBCollection.contains(entityBRemote){
returnValue = entityBRemote;
}
}
catch(FinderException
e){}
catch(RemoteException
e){}
return
returnValue;
}
----- Original Message -----
Sent: Thursday, June 05, 2003 8:12
PM
Subject: Reg CMR EJB 2.0
Hello All,
Suppose I have two database tables A and
B.
Scehma of A
NAME (pk)
VALUE
Scehma of B
ID (pk)
NAME ( Foreign Key from A)
DETAIL1
DETAIL2
A and B have master detail relationship . (
like order and lineitem )
so we create a CMP Entity A
which has One to Many relationship with Entity B.
Now Entity A can have methods exposed like
..
Collection getEntityB()
My Queries are :-
1) I wanted to add another argumented method so
that i can have a specific row selected from Entity B where value of DETAIL1
can compared along with the foreign key.
getEntityB( "value of detail 1" )
Can be this done ... , if yes please guide
.
Thanks
Vikram
