Re: Java stored procedure performing insert/update/delete

[Steve Ebersole]

Looks like I am seeing https://issues.apache.org/jira/browse/DERBY-211

On Wed 31 Jul 2013 07:02:01 PM CDT, Steve Ebersole wrote:

I am trying to work out how to define a Java stored procedure using
Derby that performs a insert/update/delete and results in the proper
"update count" on the JDBC client.  But I have so far been unsuccessful.

Here is what I have...

First, through JDBC I execute:

create procedure deleteAllUsers()
language java
external name 'TheClass.deleteAllUsers'
parameter style java

TheClass.deleteAllUsers looks like:

public static void deleteAllUsers() {
    Connection conn = DriverManager.getConnection(
"jdbc:default:connection" );
    PreparedStatement ps = conn.prepareStatement( "delete from t_user" );
    int count = ps.executeUpdate();
    System.out.println( "Count : " + count );
    ps.close();
    conn.close();
}

And on the JDBC client side:

Connection conn = ...;
CallableStatement stmnt = conn.prepareCall( "{call deleteAllUsers()}" );
// yes I know this could be stmnt.executeUpdate()...
stmnt.execute();
int count = stmnt.getUpdateCount();


So the deleteAllUsers() prints the correct count.  But on the client,
I always get zero (and not -1).

Obviously I am doing something wrong.  Any pointers?

Thanks,
Steve