<s>
Profile	B-Language
Scripting	I-Language
Language	I-Language
(	O
PSL	O
)	O
is	O
a	O
superset	O
of	O
the	O
MUMPS	B-Language
programming	I-Language
language	I-Language
that	O
adds	O
object-oriented	B-Language
language	I-Language
features	I-Language
.	O
</s>
<s>
PSL	O
is	O
a	O
language	O
that	O
implements	O
object	B-Language
orientated	I-Language
concepts	O
such	O
as	O
classes	O
,	O
methods	O
,	O
encapsulation	O
,	O
inheritance	O
,	O
and	O
strong	O
data	O
typing	O
as	O
extensions	O
to	O
the	O
MUMPS	B-Language
language	I-Language
.	O
</s>
<s>
PSL	O
was	O
initially	O
conceived	O
in	O
December	O
1998	O
by	O
Frank	O
Sanchez	O
,	O
then	O
President	O
of	O
Sanchez	O
Computer	O
Associates	O
,	O
as	O
a	O
transformation	O
tool	O
that	O
could	O
reverse	O
engineer	O
a	O
very	O
large	O
and	O
complex	O
banking	O
application	O
(	O
Fidelity	O
National	O
Information	O
Services	O
'	O
Profile	O
 '	O
)	O
which	O
was	O
written	O
predominantly	O
in	O
MUMPS	B-Language
.	O
</s>
<s>
Frans	O
and	O
Dan	O
have	O
focused	O
on	O
implementing	O
the	O
database	O
independent	O
features	O
of	O
the	O
language	O
,	O
and	O
more	O
recently	O
the	O
Java	B-Language
source	O
target	O
code	O
.	O
</s>
<s>
The	O
initial	O
language	O
concepts	O
included	O
the	O
ability	O
to	O
bind	O
the	O
source	O
code	O
to	O
a	O
database	O
schema	O
which	O
generates	O
dynamic	O
Data	O
Access	O
Classes	O
(	O
preempting	O
similar	O
persistent	O
class	O
generation	O
in	O
Java	B-Language
)	O
and	O
database	O
methods	O
that	O
could	O
be	O
code	O
generated	O
into	O
either	O
MUMPS	B-Language
globals	O
or	O
a	O
commercial	O
RDMS	B-Application
.	O
</s>
<s>
PSL	O
interprets	O
legacy	O
MUMPS	B-Language
code	O
,	O
though	O
some	O
legacy	O
commands	O
(	O
such	O
as	O
GO	O
,	O
NEW	O
and	O
KILL	O
)	O
can	O
be	O
disabled	O
or	O
marked	O
as	O
deprecated	O
(	O
generating	O
compiler	O
warnings	O
)	O
.	O
</s>
<s>
Direct	O
references	O
to	O
MUMPS	B-Language
globals	O
can	O
also	O
be	O
disabled	O
or	O
deprecated	O
.	O
</s>
<s>
Numerous	O
PSL	O
compiler	O
directives	O
(	O
e.g.	O
,	O
#IF	O
/	O
#ELSE	O
,	O
#ACCEPT	O
)	O
were	O
also	O
added	O
to	O
the	O
PSL	O
language	O
,	O
as	O
were	O
Java	B-Language
style	O
blocks	O
and	O
comments	O
,	O
modern	O
error	O
handling	O
semantics	O
and	O
white	O
space	O
.	O
</s>
<s>
Two	O
MUMPS	B-Language
language	I-Language
elements	O
were	O
eliminated	O
initially	O
(	O
M-style	O
blocks	O
and	O
goto	O
label+offset	O
)	O
as	O
they	O
could	O
not	O
be	O
supported	O
within	O
the	O
PSL	O
object	O
scope	O
handling	O
.	O
</s>
<s>
This	O
capability	O
was	O
considered	O
to	O
be	O
critical	O
to	O
the	O
ability	O
to	O
generate	O
code	O
that	O
optimized	O
both	O
a	O
MUMPS	B-Language
global	O
database	O
and	O
multiple	O
commercial	O
RDMS	B-Application
's	O
from	O
the	O
same	O
PSL	O
source	O
.	O
</s>
<s>
The	O
initial	O
release	O
of	O
PSL	O
(	O
originally	O
called	O
M++	O
)	O
was	O
in	O
the	O
summer	O
of	O
1999	O
,	O
as	O
part	O
of	O
the	O
Profile	O
version	O
6.2	O
.	O
</s>
<s>
In	O
that	O
release	O
,	O
less	O
than	O
5%	O
of	O
the	O
MUMPS	B-Language
code	O
was	O
converted	O
to	O
PSL	O
,	O
though	O
new	O
development	O
was	O
predominantly	O
in	O
PSL	O
source	O
code	O
and	O
analysis	O
for	O
widespread	O
reverse	O
engineering	O
was	O
underway	O
.	O
</s>
<s>
The	O
Profile	O
application	O
conversion	O
from	O
MUMPS	B-Language
to	O
PSL	O
was	O
100%	O
completed	O
in	O
2006	O
,	O
with	O
the	O
release	O
of	O
Profile	O
version	O
7.0	O
.	O
</s>
<s>
Profile	O
version	O
7.0	O
was	O
also	O
the	O
first	O
commercial	O
version	O
of	O
the	O
application	O
that	O
could	O
be	O
targeted	O
to	O
run	O
on	O
either	O
a	O
GT.M	B-Application
MUMPS	B-Language
database	O
or	O
an	O
Oracle	B-General_Concept
9	I-General_Concept
database	I-General_Concept
,	O
with	O
GT.M	B-Application
MUMPS	B-Language
source	O
code	O
as	O
the	O
PSL	O
target	O
.	O
</s>
<s>
Currently	O
PSL	O
is	O
continuing	O
to	O
be	O
actively	O
enhanced	O
to	O
support	O
IBM	B-Application
DB2	I-Application
as	O
a	O
target	O
database	O
and	O
to	O
optionally	O
generate	O
either	O
GT.M	B-Application
MUMPS	B-Language
or	O
Java	B-Language
target	O
code	O
from	O
the	O
same	O
PSL	O
source	O
code	O
.	O
</s>
<s>
Furthermore	O
,	O
PSL	O
is	O
supported	O
by	O
a	O
modern	O
Eclipse-based	O
development	O
environment	O
,	O
with	O
integrated	O
schema	O
and	O
code	O
management	O
and	O
numerous	O
interactive	O
plug-ins	O
.	O
</s>
<s>
While	O
Java	B-Language
and	O
commercial	O
RDMS	B-Application
deployments	O
are	O
possible	O
in	O
the	O
future	O
,	O
today	O
100%	O
of	O
the	O
deployments	O
are	O
on	O
the	O
GT.M	B-Application
MUMPS	B-Language
target	O
language	O
and	O
database	O
,	O
with	O
the	O
exception	O
of	O
a	O
single	O
Oracle	B-General_Concept
DBMS	I-General_Concept
deployment	O
.	O
</s>
