OTL 4.0, Example 351 (Simple Unicode Insert/Select and #define OTL_UNICODE_CHAR_TYPE)

Source Code

#include <iostream>
using namespace std;

#include <stdio.h>

#define OTL_ORA9I // Compile OTL 4.0/OCI9i
//#define OTL_ORA10G
//#define OTL_ORA10G_R2
#define OTL_UNICODE // Enable Unicode OTL for OCI9i

#if defined(__GNUC__)
#define OTL_UNICODE_CHAR_TYPE unsigned short 
#else
#define OTL_UNICODE_CHAR_TYPE wchar_t
#endif

#include <otlv4.h> // include the OTL 4.0 header file

otl_connect db; // connect object

void insert()
// insert rows into table
{ 
 otl_stream o(50, // buffer size
              "insert into test_tab values(:f1<int>,:f2<char[5]>)", 
                 // SQL statement, char[5] means 5 2-byte 
                 // Unicode charatcters including a null
                 // terminator
              db // connect object
             );

 OTL_UNICODE_CHAR_TYPE tmp[5]; // Null terminated Unicode character array.

 for(int i=1;i<=100;++i){
  o<<i;
  tmp[0]=100; // Unicode character (decimal code of 100)
  tmp[1]=101; // Unicode character (decimal code of 101)
  tmp[2]=102; // Unicode chracater (decimal code of 102)
  tmp[3]=103; // Unicode chracater (decimal code of 103)
  tmp[4]=0; // Unicode null terminator 
  o<<tmp; 
 }

}

void select()
{ 
 otl_stream i(50, // buffer size
              "select * from test_tab "
              "where f1>=:f11<int> "
              "  and f1<=:f12<int>*2",
                 // SELECT statement
              db // connect object
             ); 
   // create select stream
 
 int f1;
 OTL_UNICODE_CHAR_TYPE f2[5];

 i<<8<<8; // assigning :f11 = 8, f12 = 8
   // SELECT automatically executes when all input variables are
   // assigned. First portion of output rows is fetched to the buffer

 while(!i.eof()){ // while not end-of-data
  i>>f1;
  i>>f2;
  cout<<"f1="<<f1<<", f2=";
   for(int j=0;f2[j]!=0;++j)
     cout<<" "<<f2[j];
   cout<<endl;
 }

 i<<4<<4; // assigning :f11 = 4, :f12 = 4
   // SELECT automatically executes when all input variables are
   // assigned. First portion of output rows is fetched to the buffer

 while(!i.eof()){ // while not end-of-data
  i>>f1>>f2;
  cout<<"f1="<<f1<<", f2=";
   for(int j=0;f2[j]!=0;++j)
     cout<<" "<<f2[j];
   cout<<endl;
 }

}

int main()
{
 otl_connect::otl_initialize(); // initialize the database API environment
 try{

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

  otl_cursor::direct_exec
   (
    db,
    "drop table test_tab",
    otl_exception::disabled // disable OTL exceptions
   ); // drop table
   db.commit();
  otl_cursor::direct_exec
   (
    db,
    "create table test_tab(f1 int, f2 varchar2(4))"
    );  // create table
  insert(); // insert records into table
  select(); // select records from table

 }

 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 the database

 return 0;

}

Output

f1=8, f2= 100 101 102 103
f1=9, f2= 100 101 102 103
f1=10, f2= 100 101 102 103
f1=11, f2= 100 101 102 103
f1=12, f2= 100 101 102 103
f1=13, f2= 100 101 102 103
f1=14, f2= 100 101 102 103
f1=15, f2= 100 101 102 103
f1=16, f2= 100 101 102 103
f1=4, f2= 100 101 102 103
f1=5, f2= 100 101 102 103
f1=6, f2= 100 101 102 103
f1=7, f2= 100 101 102 103
f1=8, f2= 100 101 102 103

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. 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.