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...Continuation of Notes

Notes:

Extending set*Context( )
If a bean class needs to extend the setSessionContext( ) or setEntityContext( ) method to perform additional initialization, it simply uses super.set*Context( ). Earlier, we saw how ShoppingCartBean uses setSessionContext( ) to acquire references to BookHome and CustomerHome. Here is a revised version using the base class:

public class ShoppingCartBean extends SessionBase {

// private SessionContext _sctxt; // No longer needed
private BookHome _bookhome;
private CustomerHome _custhome;

public void setSessionContext(SessionContext sctxt) {

super.setSessionContext(sctxt); // Call ancestor method

// Look up related homes:
Context ctxt = ...; // Get initial JNDI context
_bookhome = ctxt.lookup(...); // Look up book home
_customerhome = ctxt.lookup(...); // Look up customer home
}

// Rest of class...
}