OTL 4.0, Example 311 (Large PL/SQL tables as parameters)

This example demonstrates how to use OTL template & dymanic PL/SQL table containers for reading/writing PL/SQL tables from/to the otl_stream.

Source Code

#include <iostream>
using namespace std;

#include <stdio.h>

#define OTL_ORA7 // Compile OTL 4.0/OCI7
#include <otlv4.h> // include the OTL 4.0 header file

otl_connect db; // connect object

 otl_int_tab<50000> t1; // PL/SQL table of int[50000]

void plsql(void)
{ 
 otl_stream s(1, // buffer size needs to be set to 1 in this case
                "begin "
                "  pkg_test.prc_test(:tsize<int,in>,:t1<int,out[50000]>); "
               "end;",
              db // connect object
             );

 s.set_commit(0); // Since there is no transactions, unset the stream auto-commit

s<<50000; // write :tsize into the stream, since it is input
s>>t1; // read :t1 from the stream since it is output

 cout<<"T1_Len="<<t1.len()<<endl;
 if(t1.is_null(0))
   cout<<"T1["<<0<<"]=NULL"<<endl;
 else
   cout<<"T1["<<0<<"]="<<t1.v[0]<<endl;
 if(t1.is_null(t1.len()-1))
   cout<<"T1["<<t1.len()-1<<"]=NULL"<<endl;
 else
   cout<<"T1["<<t1.len()-1<<"]="<<t1.v[t1.len()-1]<<endl;

}


int main()
{
 otl_connect::otl_initialize(); // initialize OCI environment
 try{

  db.rlogon("scott/tiger"); // connect to Oracle

  otl_cursor::direct_exec
   (db,
    "CREATE OR REPLACE PACKAGE pkg_test IS "
    "  TYPE my_numeric_table IS TABLE OF NUMBER INDEX BY BINARY_INTEGER; "
    "  PROCEDURE prc_test(tsize IN NUMBER, v1 OUT my_numeric_table); "
    " "
    "END; "
  );

  otl_cursor::direct_exec
   (db,
    "CREATE OR REPLACE PACKAGE BODY pkg_test IS "
    " "
    "  PROCEDURE prc_test(tsize IN NUMBER, v1 OUT my_numeric_table) "
    "  IS "
    "  BEGIN "
    "    FOR i IN 1..tsize LOOP "
    "      v1(i) := i; "
    "    END LOOP; "
    "  END; "
    "   "
    "END; "
  );


  plsql();

 }

 catch(otl_exception& p){ // intercept OTL exceptions
  cerr<<p.msg<<endl; // print out error message
  cerr<<p.stm_text<<endl; // print out SQL that caused the error
  cerr<<p.var_info<<endl; // print out the variable that caused the error
 }

 db.logoff(); // disconnect from Oracle

 return 0;

}

Output

T1_Len=50000
T1[0]=1
T1[49999]=50000

Examples Contents Go Home

Permission to use, copy, modify and redistribute this document for any purpose is hereby granted without fee, provided that the above copyright notice appear in all copies.