<s>
Castor	B-Library
is	O
a	O
data	B-General_Concept
binding	I-General_Concept
framework	O
for	O
Java	B-Language
with	O
some	O
features	O
like	O
Java	B-Language
to	O
Java-to-XML	O
binding	O
,	O
Java-to-SQL	O
persistence	O
,	O
paths	O
between	O
Java	B-Language
objects	O
,	O
XML	B-Protocol
documents	I-Protocol
,	O
relational	O
tables	O
,	O
etc	O
.	O
</s>
<s>
Castor	B-Library
is	O
one	O
of	O
the	O
oldest	O
data	B-General_Concept
binding	I-General_Concept
projects	O
.	O
</s>
<s>
Basic	O
process	O
flows	O
include	O
class	O
generation	O
,	O
marshalling	B-Application
,	O
unmarshalling	O
,	O
etc	O
.	O
</s>
<s>
Marshalling	B-Application
framework	O
includes	O
a	O
set	O
of	O
ClassDescriptors	O
and	O
FieldDescription	O
to	O
describe	O
objects	O
.	O
</s>
<s>
Class	O
generation	O
is	O
similar	O
to	O
JAXB	B-Language
and	O
Zeus	O
.	O
</s>
<s>
Castor	B-Library
supports	O
XML	B-Protocol
Schema	O
instead	O
of	O
DTDs	O
(	O
DTDs	O
are	O
not	O
supported	O
by	O
Castor	B-Library
)	O
.	O
</s>
<s>
Unmarshalling	O
and	O
marshalling	B-Application
are	O
dealt	O
with	O
marshall( )	O
and	O
unmarshall( )	O
methods	O
respectively	O
.	O
</s>
<s>
During	O
marshalling	B-Application
,	O
conversion	O
process	O
from	O
Java	B-Language
to	O
XML	B-Protocol
is	O
carried	O
out	O
,	O
and	O
,	O
during	O
unmarshalling	O
,	O
conversion	O
process	O
from	O
XML	B-Protocol
to	O
Java	B-Language
is	O
carried	O
out	O
.	O
</s>
<s>
Mapping	O
files	O
are	O
the	O
equivalent	O
of	O
a	O
binding	O
schema	O
,	O
which	O
allows	O
to	O
transforms	O
names	O
from	O
XML	B-Protocol
to	O
Java	B-Language
and	O
vice	O
versa	O
.	O
</s>
<s>
Castor	B-Library
offers	O
some	O
additional	O
features	O
which	O
are	O
not	O
present	O
in	O
JAXB	B-Language
.	O
</s>
<s>
JDO	O
-	O
Caster	O
supports	O
Java	B-Language
Data	I-Language
Objects	I-Language
.	O
</s>
<s>
Code	O
for	O
marshalling	B-Application
may	O
look	O
like	O
as	O
follows	O
:	O
</s>
