[newbe]Transfer objects

[polilop]

Is it possible to make Transfer object (as i found somwhere, known as:Value
object's) with POJO's.
If so, any tutorials on the web would be appriciated (been googl-ing but
found only with ejb's).
Thanks

 

[Alex Hunsley]

Is it possible to make Transfer object (as i found somwhere, known as:Value
object's) with POJO's.

Yes. Just write a java class with some member values that can be set (or
specified at constructor time) and also get. Rather than writing
getters, if the value object/transfer object is immutable (won't change
after creation), it's worth considering making the member values public
final and hence allowing direct access to them.

 

[polilop]

Thanks for reply. Have you any web-s, tutorials like that involve database
with TO-s (POJO's) ?

 

[Alex Hunsley]

Thanks for reply. Have you any web-s, tutorials like that involve database
with TO-s (POJO's) ?

One of the best places I know for this is Sun's own Core J2EE patterns site:

http://java.sun.com/blueprints/corej2eepatterns/

It's also available as a book, but the patterns are all there on the web
page above. Example: click on the "Core J2EE Patterns Catalog" link,
then click on "Transfer object" in the graphic.
HTH,
lex