When an Entity Bean is populated with real entity data

[Kenneth Kulathilake]

In HFEJB page:354, under the "Bean" things that can be done inside ejbActivate() , it says
"Use your EntitiyContext to:
1-...,
2-...,
3-get your primary key"

But in page:348,
1. In 1st diagram it says "Container will call ejbActivate()",
2. Then in the 2nd diagram it says "Container populates the entity bean's persistent fields with the real entity data"

So, what I cannot understand is how an entity bean can get a reference to its Primary Key even before its being populated by the container?(as mentioned in page:354)
OR am I missing something here???

If possible please explain also when an entity bean and its EJBObject becomes connected to each other (is it before ejbActivate() or after that?)

tx in advance
[ April 03, 2007: Message edited by: Kenneth Kulathilake ]