<s>
Eclipse	B-Language
Modeling	I-Language
Framework	I-Language
(	O
EMF	O
)	O
is	O
an	O
Eclipse-based	O
modeling	B-Architecture
framework	I-Architecture
and	O
code	B-Application
generation	I-Application
facility	O
for	O
building	O
tools	O
and	O
other	O
applications	O
based	O
on	O
a	O
structured	B-Application
data	I-Application
model	O
.	O
</s>
<s>
From	O
a	O
model	O
specification	O
described	O
in	O
XML	B-Language
Metadata	I-Language
Interchange	I-Language
(	O
XMI	O
)	O
,	O
EMF	O
provides	O
tools	O
and	O
runtime	O
support	O
to	O
produce	O
a	O
set	O
of	O
Java	B-Language
classes	O
for	O
the	O
model	O
,	O
a	O
set	O
of	O
adapter	O
classes	O
that	O
enable	O
viewing	O
and	O
command-based	O
editing	O
of	O
the	O
model	O
,	O
and	O
a	O
basic	O
editor	O
.	O
</s>
<s>
Models	O
can	O
be	O
specified	O
using	O
annotated	O
Java	B-Language
,	O
UML	B-Language
,	O
XML	B-Protocol
documents	I-Protocol
,	O
or	O
modeling	O
tools	O
,	O
then	O
imported	O
into	O
EMF	O
.	O
</s>
<s>
According	O
to	O
Ed	O
Merks	O
,	O
EMF	O
project	O
lead	O
,	O
"	O
Ecore	O
is	O
the	O
defacto	O
reference	O
implementation	O
of	O
OMG	B-Architecture
's	O
EMOF	B-Application
"	O
(	O
Essential	O
Meta-Object	B-Application
Facility	I-Application
)	O
.	O
</s>
<s>
Still	O
according	O
to	O
Merks	O
,	O
EMOF	B-Application
was	O
actually	O
defined	O
by	O
OMG	B-Architecture
as	O
a	O
simplified	O
version	O
of	O
the	O
more	O
comprehensive	O
'	O
C'MOF	O
by	O
drawing	O
on	O
the	O
experience	O
of	O
the	O
successful	O
simplification	O
of	O
Ecore	O
's	O
original	O
implementation	O
.	O
</s>
