Hi Sanju ,
Basically Primary key calls is to Identify the Bean Instance to which it is
been invoked.Say suppose If two clients are accesing the same the same row
in the data base two instances of the same type will be invoked to serve the
clients.
In that case container has to identify , which Insatance is belongs to which
client.At that time it uses the Primarykey class's hashCode method.In that
situation hashCode will be used to Identify the client Invocation of Bean
Instance.
I hope this clarifies your problem
Thanks
Anji
----- Original Message -----
From: sanju <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, February 16, 2001 9:20 AM
Subject: Re: BMP EJB
> Can anyone tell me why do we have to override the hashCode method in
> PrimaryKey class though we never use it?
> Thanks in advance
> sanjeev
> ----- Original Message -----
> From: Shibu Up <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Friday, February 16, 2001 8:51 AM
> Subject: Re: BMP EJB
>
>
> > Hi,
> > It is better you close the connection after every method. The
> container
> > can very well do connection pooling.
> >
> > -Shibu
> >
> >
> >
> >
> >
> > "Payal, Subhash (CTS)" <[EMAIL PROTECTED]> on 02/13/2001
02:14:03
> PM
> >
> > Please respond to A mailing list for Enterprise JavaBeans development
> > <[EMAIL PROTECTED]>
> >
> > To: [EMAIL PROTECTED]
> > cc: (bcc: U P Shibu/LTITL)
> >
> > Subject: BMP EJB
> >
> >
> >
> > Hi All
> >
> > I have a Bean Managed Persistence Bean
> > and I have to connect to database using data source (JNDI look up) ,
> > so do i connect to database in every method and close the connection in
> all
> > the methods
> > or can can i declare somewhere so that it is visible through out
> >
> > > -----Original Message-----
> > > From: Dey, Raj [SMTP:[EMAIL PROTECTED]]
> > > Sent: Tuesday, February 13, 2001 6:45 PM
> > > To: [EMAIL PROTECTED]
> > > Subject: Re: EJB for inquiry.............
> > >
> > > Thanks Miranda.
> > > -Raj
> > >
> > > -----Original Message-----
> > > From: Claudio Miranda [mailto:[EMAIL PROTECTED]]
> > > Sent: Monday, February 12, 2001 4:40 PM
> > > To: [EMAIL PROTECTED]
> > > Subject: Re: EJB for inquiry.............
> > >
> > >
> > > Yes, you can have just a EJBObject ejbObj =
> > > Home.findByPrimaryKey(pk);
> > >
> > > --
> > > Claudio Miranda
> > > ___________________________________
> > >
> > >
> > > Raj wrote:
> > > >
> > > > Hi
> > > >
> > > > I am new to the EJB world and have a question which
> > > > may appear too simple/fundamental but would appreciate
> > > > some clarification.
> > > >
> > > > I need to write EJB's for an inquiry application which
> > > > does not store or delete data from an already existing
> > > > database.
> > > > As per the specifiction, there should be one or more
> > > > Create methods, Finder methods and destroy methods; as
> > > > I will be writing the data access code within the
> > > > bean( which is typical of BMP), is it mandatory that
> > > > the create and post create has to be written with all
> > > > the necesssary arguments(pl. bear in mind that I need
> > > > not create any rows in the database).
> > > >
> > > > When I need to make a reference to the bean using
> > > > home.create, I do not want any row to be created - is
> > > > this possible ? ( but I believe that I do need to
> > > > start with home.create to have a reference bean)
> > > > As I need to retrieve data only, is it possible to
> > > > directly call the finder methods?
> > > >
> > > > Any clarifications to the above is appreciated.
> > > >
> > > > THanks,
> > > > RD
> > >
> > >
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