Calling Stored Procedures from JAVA Application

Question

Hi all,
i am using JDeveloper 3.2.2 for creating a DB Application that
uses Oracle8i as DB Server.
One approach of the application is to only use PL/SQL Stored
Procedures to write Data back to the DB.
Some of the stored procedures expect more than 20 parameters.
I want to know if there is a better way to call such a stored
procedure from Java than using a CallableStatement and setting
its 20 parameters.
Another reason why the way above isnt possible for me is that
i need a dynamic way to set the parameters of the stored
procedure.
A solution for that dynamic way i could think of is to get
the information of the stored procedure by using some functions
of DatabaseMetaData and than use this information to map the
parameters with their respective variables in the java
application.
The best argument against this way is that it would be time and
performance consuming.
So could anybody tell me a solution to call PL/SQL stored
procedures from java which is better than doing something like:
String calString = "{Call myStoredProc(";
while(counter < 22) {
params += "?";
if(counter<21) params += ",";
counter++;
calString += params + ")}";
try {
CallableStatement cs = session.prepareCall(calString);
} catch(SQLException ex) { ... }
cs.setString(1, var1);
cs.setString(1, var2);
And that for every Stored Procedure i want to call ?!?
Any help or direction-leading would be really appreciated.
Tank you much.
MfG,
Oliver Bankel

Answer 1

Hi Oliver,
If you your Stored Procedures were in Java and seamlessly
integrated with your Java application would that make your life
easier?
I don't know if this is a practical or acceptable solution in
your environment but it would certainly solve all of your issues
and provide your with a couple of nice advantages. Scalability
and platform independence are just a couple I could think of.
There is a tool called in2j (see http://www.in2j.com) which will
automatically migrate your PL/SQL Stored Procedures into Java.
You can download a copy of the tool and migrate your PL/SQL to
Java with no upfront costs. If you're happy with the generated
Java and want to deploy it, the migration fee falls due - simple.
Hope this helps.
Elton