<s>
Persist	B-Language
is	O
a	O
Java-based	O
ORM/DAO	O
tool	O
.	O
</s>
<s>
Persist	B-Language
works	O
around	O
a	O
java.sql.Connection	O
object	O
.	O
</s>
<s>
This	O
means	O
that	O
it	O
does	O
not	O
care	O
about	O
customer	O
query	O
languages	O
(	O
it	O
uses	O
plain	O
SQL	B-Language
with	O
placeholders	O
,	O
as	O
PreparedStatement	O
objects	O
use	O
)	O
,	O
connection	O
pool	O
handling	O
,	O
transaction	O
handling	O
(	O
for	O
the	O
most	O
part	O
)	O
,	O
and	O
so	O
on	O
.	O
</s>
<s>
This	O
also	O
means	O
it	O
is	O
very	O
flexible	O
,	O
and	O
can	O
be	O
integrated	O
with	O
any	O
code	O
that	O
depends	O
on	O
JDBC	B-Language
(	O
including	O
code	O
that	O
already	O
use	O
another	O
ORM/DAO	O
tool	O
)	O
.	O
</s>
<s>
Persist	B-Language
does	O
not	O
require	O
explicit	O
mappings	O
from	O
POJOs	O
to	O
database	O
tables	O
.	O
</s>
<s>
As	O
long	O
as	O
there	O
is	O
some	O
sort	O
of	O
naming	O
conventions	O
that	O
relate	O
database	O
names	O
with	O
POJO	B-General_Concept
names	O
,	O
Persist	B-Language
will	O
require	O
virtually	O
no	O
mappings	O
.	O
</s>
<s>
It	O
can	O
,	O
however	O
,	O
be	O
instructed	O
to	O
map	O
Java	B-Language
classes	O
and	O
fields	O
to	O
database	O
tables	O
and	O
columns	O
using	O
annotations	O
.	O
</s>
<s>
Persist	B-Language
supports	O
several	O
different	O
mapping	O
strategies	O
:	O
</s>
<s>
By	O
default	O
,	O
if	O
no	O
annotations	O
specify	O
a	O
given	O
class	O
should	O
not	O
be	O
mapped	O
to	O
a	O
table	O
,	O
Persist	B-Language
will	O
try	O
to	O
find	O
a	O
table	O
that	O
matches	O
that	O
class	O
and	O
create	O
a	O
mapping	O
between	O
fields	O
and	O
columns	O
.	O
</s>
<s>
If	O
a	O
class	O
is	O
annotated	O
with	O
@NoTable	O
,	O
Persist	B-Language
will	O
not	O
try	O
to	O
map	O
it	O
to	O
a	O
table	O
,	O
and	O
the	O
class	O
will	O
only	O
be	O
able	O
to	O
hold	O
data	O
produced	O
by	O
queries	O
.	O
</s>
<s>
Persist	B-Language
will	O
convert	O
values	O
returned	O
from	O
the	O
query	O
to	O
Java	B-Language
types	O
.	O
</s>
<s>
If	O
a	O
query	O
returns	O
a	O
single	O
column	O
,	O
Persist	B-Language
can	O
map	O
data	O
directly	O
into	O
primitive	O
types	O
(	O
either	O
single	O
values	O
or	O
lists	O
)	O
:	O
</s>
