Re: [Objectbridge-jdo-dev] Relationships in objects/data

[Thomas M. <tho...@ho...>]

Hi Travis,

tr...@th... wrote:

 > How does OJB handle things like:
 >
 > public class Person
 > {
 >   String Name;
 >   Address myAddress;
 > }
 >
 > public class Address
 > {
 >   String street1;
 >   String street2;
 >   String city;
 >   String state;
 >   String zip;
 > }
 >
 > Would the address instance in a person instance be persistent if you 
stored the person instance?
 >


Depends! Have a look at tutorial 3 how to define cascading deletes,
updates and inserts. The behaviour can be configured in the repository.


 > Or what if that person class looked like this:
 >
 > public class Person
 > {
 >   String Name;
 >   java.util.List addresses; // list of address objects
 > }
 >

 > Does ojb have any way of dealing with that?
 >


Sure ! Have a look at tuorial 3 to see how to define 1:1, 1:n and m:n
associations.




 > Travis Reeder
 > Chief Software Architect
 > www.ThinkVirtual.com
 >
 >
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