Deployment Tool Problem (J2EE -Composite primary Key Class)

Question

Hi !!
e.g. I have an entiybean which has composite primary key class. So while deploying in J2EE tool u need to specify the Primary key class and the primary key field. well in case of a composite primary key class(if u have more than one field)...how do u declare all the fields for primary key class....
if u r not getting me please tell me... See in J2EE deployment tool there is on section called Entity..in that see the Primary Key class (there u specify the Primary key class) and the Primary Key Field Name (the field name) Here u can just give only one Field name..if you have mulitple fields, then where you will specify... Please let me know..
if anybody wants the code I will give the code...Please try to help..(how to deploy this kind of entity bean in J2EE deployment tool)
-Bhumika

Answer 1

Hi Bhumika,
in case you have more than one field you need to write a Primary key class where the fields you want to be the key are member variables.
your p.key class could look like this (it has to implement hash() and equals() ):
public class PersonPK implements java.io.Serializable
public int person_ID;
public PersonPK()
public PersonPK(int aPersonId)
person_ID = aPersonId;
public int hashCode()
return person_ID;
public boolean equals(Object ob)
if (ob == this) return true;
if (!(ob instanceof PersonPK)) return false;
PersonPK other = (PersonPK) ob;
if (person_ID != other.person_ID) return false;
return true;
-Hope this helps a bit,
Anke