Re: Web Services Friendly Criteria Classes

[Brian McCallister]

Mid ether collision =)

-Brian

On Dec 11, 2003, at 1:11 PM, Gary wrote:

Thanks for the post.

I meant exposing Criteria as a transfer object, so the
client could instantiate one and fill it in as
necessary.  Not exposing its methods as web services.
I agree that it may be too fine grained - hence my
query as to whether anyone else has created a "skinny"
Criteria class (or some such thing).
Gary

--- Brian McCallister
<[EMAIL PROTECTED]> wrote:
Hmm, I would think that exposing a Criteria to as a
WebService is a bit
too fine grained.
A better solution, to me, is to expose something
that takes a query
language type query and gives you back a result, for
instance:
/**
  *
@whatever-the-tag-is-to-tell-xdoclet-to-generate-stub-and-wsdl-for-axis
  */
public Object[] query(String query)
{
        DList results QueryService.execute(query);
        return results.toArray();
}
Encapsulating a whole query in one request
(invocation) cuts down
drastically on the chatter of lots of calls to a
remote Criteria, and
allows you to make the web service stateless (much
preferred).
Criteria just seem far too fine-grained and API
specific to be good web
service candidates =/
This doesn't really answer your question, I know,
but I think the
answer is that using Criteria as a remote object via
a web service
isn't a hot idea.
-Brian

On Dec 11, 2003, at 12:35 PM, Gary wrote:

I'd like to expose the Criteria class via a web
service, so clients can easily create rich
queries.
However, the class uses a number of other classes
(different types of Collections, for example) that
don't "flatten out" well into SOAP.
Has anyone tackled this before?  Any code or ideas
out
there?

Thanks, Gary

__________________________________
Do you Yahoo!?
New Yahoo! Photos - easier uploading and sharing.
http://photos.yahoo.com/


---------------------------------------------------------------------
To unsubscribe, e-mail:
[EMAIL PROTECTED]
For additional commands, e-mail:
[EMAIL PROTECTED]






---------------------------------------------------------------------
To unsubscribe, e-mail:
[EMAIL PROTECTED]
For additional commands, e-mail:
[EMAIL PROTECTED]


__________________________________
Do you Yahoo!?
New Yahoo! Photos - easier uploading and sharing.
http://photos.yahoo.com/
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]



---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]