RE: Stored procedures that return multiple rows

From: sundeep maini <sundeep_maini_at_yahoo.com>
Date: Thu, 23 Aug 2001 15:02:16 -0700
Message-ID: <F001.00376435.20010823145845@fatcity.com>

I was about to write a similar testimonial when I saw Steve Orr's message. Don't use OCI based class111.zip. It has Oracle properity classes. The pure java class111.zip works great and is portable. Passing ref cursors from stored procedures makes the solution simple and elegent to implement.

The seperation between the client rendering (HTML/Javascript/XML crowd) and middle tier Java servlets and Middle tier and RDBMS developer (using ref cursors over thin JDBC) is perhaps the best way to go.

Avoid embeded SQL in Java if possible. Access to RDBMS via ref_cursor hides the DB schema from the Java developers making DB schema changes less painful and also allowing future switch of the databases if required, lot less painful. No meddling from Java folks too.

I don't know how anybody decides on application partitioning issues as this division between business/domain objects and their persistence in the database raises all sorts of interesting design issues....

Regds

• "Orr, Steve" <sorr_at_rightnow.com> wrote:
  > On my previous gig all DB access was via stored
  > procedures returning ref
  > cursors through JDBC. The Java dweebs could do just
  > about anything with the
  > ref cursor. It worked really well. I could actually
  > tune SQL queries on the
  > running production application without any
  > recompilation. Nice seperation of
  > code. The DBA can tune real SQL code and the
  > developers won't even know. No
  > embedded SQL. Yeah!!
  >
  > OCI can also accommodate ref cursors.
  >
  > Steve Orr
  >
  >
  > -----Original Message-----
  > Sent: Thursday, August 23, 2001 2:11 PM
  > To: Multiple recipients of list ORACLE-L
  >
  >
  > We're considering a mandate that all database access
  > be via stored
  > procedures (probably in packages). These would be
  > called either via OCCI
  > (the C++ call interface) or JDBC. My question is
  > whether anyone's had
  > experience in returning a result set from a PL/SQL
  > procedure under these
  > circumstances, and how it was implemented: did you
  > return a ref cursor, an
  > index-by table, a set of arrays....? Any advice
  > will be appreciated.
  > Thanks!
  >
  >
  > Paul Baumgartel
  > MortgageSight Holdings, LLC
  > pbaumgartel_at_mortgagesight.com
  >
  >
  >
  >
  

  ---

Sundeep Maini
Consultant
Currently on Assignement at Marshfield Clinic WI mainis_at_mfldclin.edu

---

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Author: sundeep maini
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Received on Thu Aug 23 2001 - 17:02:16 CDT