Java Reference
In-Depth Information
corresponding
reference
implementation
available
from
Oracle.
RedHat Seam does provide some nice (portable) extensions to
Java EE and JSF was actually built to be used with extension
and third party component libraries. Such a library is however
not really a 'framework', but just gives you additional widgets
to use on your pages and not the same as replacing JSF with
say Struts or GWT.
Figure 2: Java EE Framework Comparison
N-Tier or No-Tier
N-Tier Systems if well architected and designed can help
achieve all non-functional service levels requirements of the
system. Due to a highly distributed model, manageability may
suffer a little in N-Tier systems, but since all systems are
highly modular, the issue is fairly easy to address. It is also
notable that Architects have to sometimes compromise a little
on one service level requirement, to achieve the desired effect
on another. For example Performance and Security show an
inverse proportional relationship.
Consists of:
