<s>
Kermeta	B-Language
is	O
a	O
modeling	O
and	O
programming	O
language	O
for	O
metamodel	O
engineering	O
.	O
</s>
<s>
The	O
Kermeta	B-Language
language	O
was	O
initiated	O
by	O
Franck	O
Fleurey	O
in	O
2005	O
within	O
the	O
team	O
of	O
IRISA	O
(	O
gathering	O
researchers	O
of	O
the	O
INRIA	O
,	O
CNRS	B-Application
,	O
INSA	O
and	O
the	O
University	O
of	O
Rennes	O
1	O
)	O
.	O
</s>
<s>
The	O
Kermeta	B-Language
language	O
borrows	O
concepts	O
from	O
languages	O
such	O
MOF	B-Application
,	O
OCL	B-Language
and	O
QVT	B-Language
,	O
but	O
also	O
from	O
BasicMTL	O
,	O
a	O
model	B-Language
transformation	I-Language
language	I-Language
implemented	O
in	O
2004	O
in	O
the	O
Triskell	O
team	O
by	O
D	O
.	O
Vojtisek	O
and	O
F	O
.	O
Fondement	O
.	O
</s>
<s>
It	O
is	O
also	O
inspired	O
by	O
the	O
previous	O
experience	O
on	O
MTL	O
,	O
the	O
first	O
transformation	O
language	O
created	O
by	O
Triskell	O
,	O
and	O
by	O
the	O
Xion	O
action	O
language	O
for	O
UML	B-Language
.	O
</s>
<s>
The	O
name	O
Kermeta	B-Language
is	O
an	O
abbreviation	O
for	O
"	O
Kernel	O
Metamodeling	O
"	O
and	O
reflects	O
the	O
fact	O
that	O
the	O
language	O
is	O
conceived	O
as	O
a	O
core	O
for	O
(	O
meta	O
-	O
)	O
modeling	O
.	O
</s>
<s>
Kermeta	B-Language
,	O
and	O
its	O
execution	O
platform	O
under	O
Eclipse	B-Application
is	O
currently	O
available	O
under	O
its	O
version	O
2.0.4	O
released	O
in	O
2012	O
.	O
</s>
<s>
It	O
is	O
open-source	O
,	O
under	O
the	O
Eclipse	B-License
Public	I-License
License	I-License
.	O
</s>
<s>
Kermeta	B-Language
is	O
a	O
modeling	O
and	O
aspect	B-Architecture
oriented	I-Architecture
programming	I-Architecture
language	O
.	O
</s>
<s>
Its	O
underlying	O
metamodel	O
conforms	O
to	O
the	O
EMOF	B-Application
standard	O
.	O
</s>
<s>
Kermeta	B-Language
thus	O
brings	O
:	O
</s>
<s>
all	O
the	O
concepts	O
of	O
EMOF	B-Application
used	O
for	O
the	O
specifications	O
of	O
a	O
model	O
.	O
</s>
<s>
The	O
main	O
characteristics	O
of	O
the	O
Kermeta	B-Language
language	O
are	O
:	O
</s>
<s>
aspect-oriented	B-Architecture
:	O
integrate	O
a	O
simple	O
but	O
powerful	O
weaver	O
for	O
simple	O
meta-modeling	O
tasks	O
.	O
</s>
<s>
Arbitrary	O
complex	O
weaving	O
is	O
achieved	O
using	O
a	O
dedicated	O
composer	O
written	O
in	O
Kermeta	B-Language
.	O
</s>
<s>
Especially	O
in	O
order	O
to	O
add	O
behavior	O
to	O
them	O
by	O
weaving	O
behavioral	O
semantics	B-Application
(	O
operational	O
or	O
translational	O
)	O
.	O
</s>
<s>
design	B-Application
by	I-Application
contract	I-Application
:	O
operations	O
support	O
pre	O
and	O
post	O
conditions	O
,	O
classes	O
use	O
invariants	O
.	O
</s>
<s>
complete	O
introspection	B-Application
:	O
the	O
complete	O
model	O
of	O
the	O
program	O
is	O
available	O
during	O
execution	O
.	O
</s>
