<s>
Oracle	B-Library
TopLink	I-Library
is	O
a	O
mapping	B-General_Concept
and	O
persistence	B-Library
framework	I-Library
for	O
Java	B-Language
developers	O
.	O
</s>
<s>
TopLink	B-Library
is	O
produced	O
by	O
Oracle	B-Application
and	O
is	O
a	O
part	O
of	O
Oracle	B-Application
's	O
OracleAS	B-Language
,	O
WebLogic	B-Language
,	O
and	O
OC4J	O
servers	O
.	O
</s>
<s>
It	O
is	O
an	O
object-persistence	B-Application
and	O
object-transformation	O
framework	O
.	O
</s>
<s>
TopLink	B-Library
provides	O
development	O
tools	O
and	O
run-time	O
functionalities	O
that	O
ease	O
the	O
development	O
process	O
and	O
help	O
increase	O
functionality	O
.	O
</s>
<s>
Persistent	O
object-oriented	O
data	O
is	O
stored	O
in	O
relational	B-Application
databases	I-Application
which	O
helps	O
build	O
high-performance	O
applications	O
.	O
</s>
<s>
Storing	O
data	O
in	O
either	O
XML	B-Protocol
(	O
Extensible	B-Protocol
Markup	I-Protocol
Language	I-Protocol
)	O
or	O
relational	B-Application
databases	I-Application
is	O
made	O
possible	O
by	O
transforming	O
it	O
from	O
object-oriented	O
data	O
.	O
</s>
<s>
A	O
rich	O
user-interface	O
is	O
possible	O
on	O
TopLink	B-Library
with	O
the	O
help	O
of	O
TopLink	B-Library
Mapping	B-General_Concept
Workbench	O
.	O
</s>
<s>
This	O
Mapping	B-General_Concept
Workbench	O
makes	O
it	O
possible	O
to	O
carry	O
out	O
the	O
following	O
with	O
ease	O
.	O
</s>
<s>
Graphical	O
mapping	B-General_Concept
of	O
an	O
object	B-Application
model	I-Application
to	O
data	B-Application
model	I-Application
.	O
</s>
<s>
Generation	O
of	O
data	B-Application
model	I-Application
from	O
its	O
object	B-Application
model	I-Application
and	O
vice	O
versa	O
.	O
</s>
<s>
Auto-mapping	O
of	O
any	O
existing	O
data	B-Application
models	I-Application
and	O
object	B-Application
models	I-Application
.	O
</s>
<s>
Oracle	B-Language
's	I-Language
JDeveloper	I-Language
IDE	I-Language
provides	O
easy	O
integration	O
of	O
these	O
functionalities	O
provided	O
by	O
the	O
Mapping	B-General_Concept
Workbench	O
.	O
</s>
<s>
With	O
the	O
use	O
of	O
TopLink	B-Library
,	O
users	O
can	O
stay	O
more	O
focused	O
on	O
their	O
primary	O
cause	O
and	O
let	O
TopLink	B-Library
handle	O
the	O
integration	O
of	O
persistence	B-Application
and	O
object	O
transformation	O
into	O
their	O
application	O
.	O
</s>
<s>
Designing	O
,	O
implementing	O
and	O
deploying	O
process	O
is	O
accelerated	O
as	O
TopLink	B-Library
supports	O
a	O
variety	O
of	O
data	O
sources	O
and	O
formats	O
such	O
as	O
Relational	B-Application
database	I-Application
,	O
Object-relational	B-General_Concept
database	I-General_Concept
,	O
Enterprise	B-General_Concept
information	I-General_Concept
system	I-General_Concept
(	O
EIS	O
)	O
,	O
XML	B-Protocol
and	O
many	O
others	O
.	O
</s>
<s>
Toplink	B-Library
was	O
originally	O
developed	O
by	O
The	O
Object	O
people	O
in	O
Smalltalk	O
.	O
</s>
<s>
It	O
was	O
ported	O
to	O
Java	B-Language
in	O
1996-1998	O
and	O
called	O
"	O
TopLink	B-Library
for	O
Java	B-Language
"	O
.	O
</s>
<s>
In	O
2002	O
,	O
TopLink	B-Library
was	O
acquired	O
by	O
Oracle	B-Application
Corporation	I-Application
and	O
was	O
developed	O
under	O
the	O
Oracle	B-Application
Fusion	O
Middleware	O
product	O
.	O
</s>
<s>
The	O
TopLink	B-Library
code	O
was	O
donated	O
to	O
the	O
Eclipse	B-Application
Foundation	O
and	O
the	O
EclipseLink	B-Language
project	O
was	O
born	O
in	O
2007	O
.	O
</s>
<s>
The	O
EclipseLink	B-Language
now	O
provides	O
the	O
functionality	O
of	O
TopLink	B-Library
.	O
</s>
<s>
Sun	O
Microsystems	O
selected	O
EclipseLink	B-Language
in	O
March	O
2008	O
,	O
as	O
the	O
implementation	O
for	O
the	O
JPA	O
2.0	O
,	O
JSR	O
317	O
reference	O
.	O
</s>
<s>
A	O
number	O
of	O
versions	O
of	O
TopLink	B-Library
have	O
been	O
released	O
since	O
and	O
the	O
latest	O
version	O
12c	O
(	O
12.1.3	O
)	O
is	O
available	O
for	O
free	O
Download	O
.	O
</s>
<s>
Extensive	O
mapping	B-General_Concept
support	O
using	O
relational	O
,	O
object-relational	B-General_Concept
data	O
type	O
and	O
XML	B-Protocol
.	O
</s>
<s>
Advanced	O
query	O
capability	O
including	O
native	O
SQL	B-Language
,	O
Java	B-Language
Persistence	I-Language
Query	I-Language
Language	I-Language
(	O
JPQL	B-Language
)	O
and	O
EclipseLink	B-Language
Expressions	O
framework	O
.	O
</s>
<s>
TopLink	B-Library
Grid	O
.	O
</s>
<s>
The	O
runtime	O
component	O
of	O
TopLink	B-Library
is	O
provided	O
by	O
the	O
EclipseLink	B-Language
Core	O
.	O
</s>
<s>
Persistence	B-Application
behavior	O
is	O
enabled	O
by	O
making	O
application	O
calls	O
that	O
invoke	O
EclipseLink	B-Language
API	O
to	O
perform	O
these	O
functionalities	O
which	O
provides	O
safe	O
access	O
to	O
shared	O
databases	O
.	O
</s>
<s>
Import	O
the	O
following	O
class	O
to	O
use	O
extended	O
functionality	O
of	O
EclipseLink	B-Language
.	O
</s>
<s>
The	O
binding	O
of	O
Java	B-Language
classes	O
to	O
XML	B-Protocol
schemas	O
is	O
possible	O
with	O
the	O
help	O
of	O
Object-XML	O
,	O
which	O
is	O
an	O
EclipseLink	B-Language
component	O
.	O
</s>
<s>
By	O
implementing	O
JAXB	B-Language
,	O
mapping	B-General_Concept
information	O
is	O
provided	O
through	O
annotations	O
.	O
</s>
<s>
It	O
also	O
provides	O
manipulation	O
of	O
XML	B-Protocol
.	O
</s>
<s>
The	O
Service	B-Application
Data	I-Application
Objects	I-Application
(	O
SDO	O
)	O
provides	O
with	O
the	O
use	O
of	O
SDO	O
API	O
,	O
use	O
dynamic	O
objects	O
to	O
customize	O
and	O
manipulate	O
XML	B-Protocol
,	O
use	O
of	O
static	O
data	O
objects	O
and	O
conversion	O
of	O
XML	B-Protocol
Schema	O
.	O
</s>
<s>
Database	O
Web	O
Services	O
(	O
DBWS	O
)	O
facilitates	O
access	O
to	O
relational	B-Application
databases	I-Application
with	O
the	O
help	O
of	O
web	O
service	O
.	O
</s>
<s>
A	O
database	O
access	O
can	O
be	O
made	O
without	O
the	O
need	O
to	O
write	O
a	O
Java	B-Language
code	I-Language
.	O
</s>
<s>
The	O
XML	B-Application
SOAP	I-Application
Messages	O
and	O
the	O
databases	O
are	O
connected	O
by	O
the	O
runtime	O
component	O
of	O
DBWS	O
which	O
uses	O
EclipseLink	B-Language
.	O
</s>
<s>
TopLink	B-Library
Grid	O
is	O
an	O
integration	O
mechanism	O
that	O
provides	O
connection	O
between	O
Oracle	B-Application
Coherence	I-Application
and	O
EclipseLink	B-Language
.	O
</s>
<s>
An	O
application	O
generally	O
interacts	O
with	O
the	O
relational	B-Application
database	I-Application
,	O
which	O
is	O
its	O
primary	O
database	O
.	O
</s>
<s>
But	O
with	O
TopLink	B-Library
the	O
application	O
can	O
store	O
data	O
on	O
the	O
Coherence	O
grid	O
called	O
as	O
JPA	O
on	O
the	O
grid	O
.	O
</s>
<s>
TopLink	B-Library
Grid	O
functionality	O
can	O
be	O
used	O
only	O
if	O
the	O
user	O
has	O
license	O
for	O
Oracle	B-Application
Coherence	I-Application
.	O
</s>
<s>
To	O
get	O
support	O
for	O
TopLink	B-Library
Grid	O
and	O
EclipseLink	B-Language
,	O
users	O
also	O
need	O
to	O
import	O
the	O
following	O
package	O
of	O
classes	O
.	O
</s>
<s>
org.eclipse.coherence	O
.	O
</s>
<s>
Database	O
operations	O
like	O
Insert	B-Language
,	O
Update	B-Language
and	O
Delete	B-Language
can	O
also	O
be	O
performed	O
in	O
TopLink	B-Library
.	O
</s>
<s>
The	O
changes	O
made	O
to	O
the	O
database	O
are	O
reflected	O
in	O
the	O
Oracle	B-Application
Coherence	I-Application
cache	O
.	O
</s>
<s>
In	O
Java	B-Language
Persistence	I-Language
API	I-Language
,	O
an	O
entity	O
is	O
a	O
persistence	B-Application
class	O
.	O
</s>
<s>
Using	O
TopLink	B-Library
,	O
a	O
number	O
of	O
performance	O
features	O
for	O
writing	O
large	O
amounts	O
of	O
data	O
can	O
be	O
implemented	O
.	O
</s>
<s>
Deleting	O
an	O
entity	O
is	O
the	O
opposite	O
of	O
Insertion	O
and	O
can	O
be	O
one	O
using	O
remove(Object entity )	O
method	O
of	O
the	O
EntityManager.The	O
EntityManager	O
method	O
flush( )	O
deletes	B-Language
the	O
entity	O
on	O
completion	O
of	O
the	O
transaction	O
.	O
</s>
<s>
Users	O
can	O
use	O
most	O
of	O
the	O
tools	O
in	O
the	O
market	O
and	O
use	O
TopLink	B-Library
along	O
with	O
it	O
.	O
</s>
<s>
But	O
the	O
following	O
toots	O
provide	O
special	O
integration	O
with	O
TopLink	B-Library
.	O
</s>
