> -----Original Message-----
> From: Bo Xu [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, November 23, 2000 3:55 PM
> To: [EMAIL PROTECTED]
> Subject: Re: Need help in PK Class
>
>
> Anil Rawlani wrote:
>
> > Hello Prince,
> >
> > In primary class files hashcode method
> > public int hashCode()
> > {
> >
> > return variablename.hashcode();
> > }
> >
> > and add one more method in same class
> >
> > public String toString()
> > {
> > variablename.toString();
> > }
> >
> > and try compliling it , I think that this will solve the problem
> >
> > bye!!!!!!!1
> >
> > With regards,
> >
> > Anil S. Rawlani,
> > Global Tele-Systems Ltd,
> > Phone: 7612929, 7684111 Ext:3271.
> >
> > > -----Original Message-----
> > > From: Prince Jacob Alex [SMTP:[EMAIL PROTECTED]]
> > > Sent: Wednesday, November 22, 2000 7:22 PM
> > > To: [EMAIL PROTECTED]
> > > Subject: Need help in PK Class
> > >
> > > Hello,
> > >
> > > I am developing some sample EJB's using EJB ver 1.1
> and weblogic as
> > > the container. According to EJB 1.1 spec we need to
> override the methods
> > > boolean equals() and int hashcode() in the PK class.
> > >
> > > My doubt is that if my primary key is a String, then
> how do I override
> > > the method int hashCode(). I can cast the return as
> string but that
> > > dosen't make much of sense.
> > >
> > > Please let me know if I am missing something.
> > >
> > > Thanks
> > >
> > > Prince
> > >
>
> [...]
>
> Hi :-) perhaps we also need to override equals method , the following
> is basicly from the book *Mastering Enterprise JavaBeans ...*
> (ISBN: 0-471-33229-1)
>
>
> public class AccountPK implements java.io.Serializable
> {
> public String accountID;
>
> public AccountPK(String accountID) {
> this.accountID = accountID;
> }
>
> public AccountPK() {
> }
>
> public String toString() {
> return accountID.toString();
> }
>
> public int hashCode()
> {
> return accountID.hashCode();
> }
>
> public boolean equals(Object acct)
> {
> return ((AccountPK)acct).accountID.equals(accountID);
> }
> }
>
the equals method should look like this:
public boolean equals(Object obj){
if (obj==null ||!(obj.instanceOf(AccountPk)))
return false;
else {
return ((AccountPk)obj).accountID.equals(accountID);
}
}
===========================================================================
To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
of the message "signoff EJB-INTEREST". For general help, send email to
[EMAIL PROTECTED] and include in the body of the message "help".
