Javabean for file up-/down-load to/from the database

Dear all,
Has anyone any experience in client-side customizing/extending
through the use of standard JavaBeans or
Pluggable Java Components (PJCs) within the Oracle (Web-)Forms
Developer 6i environment? We want to realize the
following:
By using a Java Bean within a (Web-)Forms 6i client that is
capable of file uploads to and file downloads from a database
(end tier).
Important requirement is to uploads/downloads files (BLOB, CLOB)
directly to/from the database, NOT TO/FROM THE FILESYSTEM.
We have found a sample JavaBean on
http://otn.oracle.com/sample_code/products/forms/content.html.
Unfortunately, this code is based on file transfering to/from
the filesystem.
Is there someone who did customizations enabling file
uploads/downloads into/from the database? Are there any
other suggestions?
Please contact:
Deep Nanda
Developer
Wolters Kluwer Academic Publishers
The Netherlands
email: [email protected]
Thanks in advance,
Deep

I've not tried this out but in theory since a Java Bean is just
a piece of Java code you could do this using JDBC. However,
while you may have a valid reason for this, it really defeats
the purpose of having a middle tier. The idea behind the web
deployment is that the bulk of the application is on a powerful
server which makes the client as light weight as possible. If
you add more functionality to the client (which is not UI
specific) then you will increase the download to the client, you
will impact the system requirements for the client and you will
probably make the application less scalable (think about if yu
have 1000 clients with database connections for the middle tier
and now all 1000 want to connect from the client as well - yuo
double the access of the database)
SO the short answer is Yes yuo can in theory - in practice I
would be very careful in deciding to move this way.
Regards
Grant Ronald
Forms Product Management

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Javabean for file up-/down-load to/from the database

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