Mailing-List: contact user-help@commons.apache.org; run by ezmlm
Precedence: bulk
Reply-To: "Commons Users List" <user@commons.apache.org>
Received-SPF: pass (athena.apache.org: domain of kleij@hotmail.com designates
 65.55.116.84 as permitted sender)
Message-ID: <BLU122-W37B1FB2184E1504818069BAE920@phx.gbl>
Content-Type: multipart/alternative;
	boundary="_3ff1c911-1b9b-442e-bc95-73f2c7630256_"
From: Frank van der Kleij <kleij@hotmail.com>
To: <user@commons.apache.org>
Subject: [VFS] How to use operations
Date: Sun, 13 Jul 2008 18:41:29 +0000
Importance: Normal
MIME-Version: 1.0

--_3ff1c911-1b9b-442e-bc95-73f2c7630256_
Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable


Hi all=2C

I'm toying with my own VFS operations but I can't quite figure out how to w=
ork with them.

I
don't see how a client of the VFS framework should use the operations=3B
other than when the client has prior knowledge of the operations that
exist.

I wrote a beanshell script that rewrites the basic
beanshell interpreter file manipulations (cd=2C pwd=2C cp=2C mv etc) to VFS
manipulations. It works  great and  I can use my custom provider (for
Documentum) without any problem within the beanshell interpreter. When
I tried to add support for operations I found that it is difficult to
make  it generic though.

I added some operations to my provider
just to try=3B when I list the available operations I get a list of
Classes. As a user it is quite hard to interpret this. I could try to
use Reflection=2C but a user readable description of what the operation
seems far away.

In my view the operations only become
interesting when they are usable by a generic VFS client. If the client
is specific for the operations (I guess most operations are related to
a provider for a particular schema)  then I don't see the need to have
the intermediate VFS layer=2C you can as well  create a client based
directly on the underlying layer.

Does anyone have any experience with using the operations?

Thanks=2C

Frank
_________________________________________________________________
Express yourself instantly with MSN Messenger! Download today it's FREE!
http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/=

--_3ff1c911-1b9b-442e-bc95-73f2c7630256_--