OTL 4.0, Example 201 (Unicode, PLSQL/index-by  tables as parameters, and NVARCHAR2s)

Example 201 (Unicode, PLSQL/index-by tables as parameters, and NVARCHAR2s)

This example demonstrates how to use OTL template & dynamic 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_ORA9I // Compile OTL 4.0/OCI9i
#define OTL_UNICODE // Enable Unicode OTL for OCI9i
#include <otlv4.h> // include the OTL 4.0 header file

otl_connect db; // connect object
void plsql(void)

 otl_stream s(1, // buffer size needs to be set to 1 in this case
                "begin "
                "  pkg_test.prc_test(:t1<int,inout[100]>,:t2<char[32],out[200]>); "
               "end;",
              db // connect object
             );

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

 otl_int_tab<100> t1; // PL/SQL table of int[100]
 otl_cstr_tab<200,130> t2; 
  // PL/SQL table of char[200][130]
  // 130 = 31 * (2 bytes per Unicode character + 2 bytes for 
  // a possible surrogate character) + 2-byte null terminator
 t1.v[0]=1; // assign 1 to t1[0]
 t1.set_non_null(0); // specify that the value is not null

 t1.v[1]=2; // assign 2 to t1[1]
 t1.set_non_null(1); // specify that the value is not null

 t1.set_null(2); // set t1[2]=NULL
 t1.set_len(3); // set t1's length to 3
 s<<t1; // write t1 into the stream, since it is input

 s>>t1; // read t1 from the stream since it is input/output
 s>>t2; // read t2 from the stream since it is output.
 cout<<"T1_Len="<<t1.len()<<endl;
 for(int i=0;i<t1.len();++i)
  if(t1.is_null(i))
   cout<<"T1["<<i<<"]=NULL"<<endl;
  else
   cout<<"T1["<<i<<"]="<<t1.v[i]<<endl;

 cout<<endl<<endl<<"T2_Len="<<t2.len()<<endl;
 for(int j=0;j<t2.len();++j)
  if(t2.is_null(j))
   cout<<"T2["<<j<<"]=NULL"<<endl;
  else {
   cout<<"T2["<<j<<"]=";
// Character / string PL/SQL table containers can hold Unicode strings, when
// #define OTL_UNICODE is enabled.
   unsigned short* t2jUni=(unsigned short*)&t2.v[j];
   for(int n=0;t2jUni[n]!=0;++n)
    cout<<(char)t2jUni[n]; // Unicode to ASCII
   cout<<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; "
    "  TYPE my_varchar_table IS TABLE OF NVARCHAR2(128) INDEX BY BINARY_INTEGER; "
    "    /* size is defined in bytes for Oracle 8i... */ "
    " "
    "  PROCEDURE prc_test(v1 IN OUT my_numeric_table, v2 OUT my_varchar_table); "
    " "
    "END; "
  );

  otl_cursor::direct_exec
   (db,
    "CREATE OR REPLACE PACKAGE BODY pkg_test IS "
    " "
    "  PROCEDURE prc_test(v1 IN OUT my_numeric_table, v2 OUT my_varchar_table) "
    "  IS "
    "  BEGIN "
    "    FOR i IN 1..v1.last LOOP "
    "      v1(i) := v1(i)+100; "
    "    END LOOP; "
    "    v1(v1.last+1) := 0; "
    "    v2(1) := 'Hello'; "
    "    v2(2) := 'World'; "
    "    v2(3) := '!!!'; "
    "  END; "
    "   "
    "END; "
  );

  db.set_character_set(SQLCS_NCHAR);

  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=4
T1[0]=101
T1[1]=102
T1[2]=NULL
T1[3]=0

T2_Len=3
T2[0]=Hello
T2[1]=World
T2[2]=!!!






Examples ContentsGo Home

Copyright © 1996-2017, Sergei Kuchin, email: skuchin@gmail.com, skuchin@gmail.com .

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. THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.