<s>
Seam	O
was	O
a	O
web	B-Application
application	I-Application
framework	I-Application
developed	O
by	O
JBoss	B-Language
,	O
a	O
division	O
of	O
Red	O
Hat	O
.	O
</s>
<s>
Seam	O
3	O
provides	O
a	O
modular	O
set	O
of	O
extensions	O
to	O
the	O
CDI	B-Library
programming	O
model	O
.	O
</s>
<s>
Seam	O
2	O
combines	O
the	O
two	O
frameworks	O
Enterprise	B-Language
JavaBeans	I-Language
(	O
EJB3	O
)	O
and	O
JavaServer	B-Language
Faces	I-Language
(	O
JSF	O
)	O
.	O
</s>
<s>
However	O
,	O
simple	O
POJOs	O
can	O
be	O
used	O
at	O
the	O
back	B-Architecture
end	I-Architecture
.	O
</s>
<s>
One	O
can	O
turn	O
any	O
EJB3	O
object	O
or	O
any	O
simple	O
POJO	B-Language
object	O
into	O
a	O
Seam	O
component	O
by	O
just	O
using	O
annotations	O
.	O
</s>
<s>
Once	O
a	O
component	O
becomes	O
a	O
Seam	O
component	O
,	O
it	O
can	O
be	O
accessed	O
through	O
JSF	O
or	O
through	O
other	O
business-logic	B-Architecture
components	O
in	O
a	O
unified	O
manner	O
.	O
</s>
<s>
Thus	O
,	O
one	O
can	O
access	O
any	O
back-end	B-Architecture
EJB	B-Language
component	O
from	O
the	O
front-end	B-Architecture
by	O
addressing	O
it	O
by	O
its	O
Seam	O
component	O
name	O
.	O
</s>
<s>
This	O
Java	B-Language
web	B-Application
framework	I-Application
incorporates	O
identity	O
management	O
features	O
.	O
</s>
<s>
Seam	O
2	O
introduces	O
the	O
concept	O
of	O
bijection	O
,	O
taken	O
from	O
Spring	O
's	O
dependency	B-Library
injection	I-Library
feature	O
where	O
objects	O
can	O
be	O
in-jected	O
or	O
out-jected	O
to/from	O
assigned	O
variables	O
using	O
the	O
@In	O
and	O
@Out	O
annotations	O
.	O
</s>
<s>
One	O
can	O
automatically	O
generate	O
a	O
CRUD	B-General_Concept
(	O
create-read-update-delete	O
)	O
web-application	O
from	O
an	O
existing	O
database	O
using	O
the	O
command-line	O
tool	O
seam-gen	O
supplied	O
with	O
the	O
framework	O
.	O
</s>
<s>
Seam	O
facilitates	O
WYSIWYG	B-Application
development	O
through	O
the	O
use	O
of	O
JBoss	B-Operating_System
Tools	I-Operating_System
,	O
a	O
set	O
of	O
plug-ins	O
targeted	O
at	O
the	O
open-source	O
Eclipse	B-Application
integrated	B-Application
development	I-Application
environment	I-Application
.	O
</s>
<s>
Seam	O
integrates	O
out	O
of	O
the	O
box	O
with	O
the	O
RichFaces	B-Language
and	O
ICEfaces	B-Language
Ajax	B-General_Concept
libraries	I-General_Concept
,	O
as	O
well	O
as	O
with	O
many	O
other	O
Ajax	B-General_Concept
libraries	I-General_Concept
-	O
without	O
the	O
need	O
to	O
write	O
JavaScript	O
code	O
.	O
</s>
<s>
Seam	O
also	O
includes	O
creator	O
modules	O
for	O
PDF	O
documents	O
,	O
e-mail	O
,	O
graphs	O
,	O
and	O
Microsoft	B-Application
Excel	I-Application
worksheets	O
.	O
</s>
