How to access PL/SQL code using JDBC
Hi,
We have stored procedures written in PL/SQL. These stored procs take both IN and OUT parameters. The parameter types are both regular datatypes like NUMBER, VARCHAR etc. So far so good. I know how to handle these data types.
Some of the stored procs also use parameters that are defined as composite data types like %ROWTYPE or %RECORD. How would I set the values of these data types? Can I use the oracle extension - support for Oracle Objects to accomplish this. If so please let me know with an example. If not any other suggestions or help will be greatly appreciated.
Thanks
Karthik
JDBC (and SQLJ) only support SQL types as stored procedure arguments, not PL/SQL types.
If your stored procedure uses a PL/SQL-only type, such as BOOLEAN, record types, or index-by tables, then you cannot call it from Java (or, for that matter, from other languages as well).
There is one exception: scalar index-by table arguments have been supported since JDBC 8.1.7 in the JDBC-OCI driver (refer to the JDBC manual for specifics).
One workaround is to create wrapper PL/SQL stored procedures that take SQL arguments and convert them to PL/SQL -and vice versa- and call the original PL/SQL stored procedures. For example, a record type could be exploded into individual arguments, or it could be converted into a SQL object type, index-by tables could be represented as SQL collection types, etc.
You can find a small example of this in the back of the JPublisher manual, where an example is given how to call a PL/SQL stored procedure that takes BOOLEAN arguments.
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