#include <iostream>
using namespace std;
#include <stdio.h>
#include <windows.h>
#include <process.h>
#define OTL_DB2_CLI // Compile OTL 4.0/DB2-CLI
#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<float>,:f2<char[31]>)",
// SQL statement
db // connect object
);
char tmp[32];
for(int i=1;i<=100;++i){
sprintf(tmp,"Name%d",i);
o<<(float)i<<tmp;
}
}
otl_stream s;
void select(void* dummy_par)
{
try{
cout<<"Selecting..."<<endl;
s.open(1, // buffer size
"select count(*) "
"from test_tab a1, test_tab a2, test_tab a3, "
" test_tab a4, test_tab a5 "
"where 1=:f1<int>",
// SELECT statement
db // connect object
);
// Create select stream.
// The ":f1" dummy input parameter is needed to give the stream
// a chance to initialize its internal variables with the SELECT statement
// BEFORE the SELECT statement starts executing
int count;
s<<1; // Now, forcing the execution of the SQL
while(!s.eof()){ // while not end-of-data
s>>count;
cout<<"count="<<count<<endl;
}
}catch(otl_exception& p){
cerr<<"Select() ===> "<<p.msg<<endl; // print out error message
cerr<<"Select() ===> "<<p.stm_text<<endl; // print out SQL that caused the error
cerr<<"Select() ===> "<<p.var_info<<endl; // print out the vari }
}
_endthread();
}
void cancel(void* dummy_par)
{
try{
cout<<"Cancelling the SQL"<<endl;
s.cancel();
}catch(otl_exception& p){
cout<<"Cancel() ===> "<<p.msg<<endl; // print out error message
cout<<"Cancel() ===> "<<p.stm_text<<endl; // print out SQL that caused the error
cout<<"Cancel() ===> "<<p.var_info<<endl; // print out the vari }
}
cout<<"End of Cancelling"<<endl;
_endthread();
}
int main()
{
otl_connect::otl_initialize(); // initialize the environment
try{
db.rlogon("scott/tiger@db2sql"); // connect to the database
otl_cursor::direct_exec
(
db,
"drop table test_tab",
otl_exception::disabled // disable OTL exceptions
); // drop table
otl_cursor::direct_exec
(
db,
"create table test_tab(f1 int, f2 varchar(30))"
); // create table
insert(); // insert records into table
_beginthread(select,0,NULL);
Sleep(2000);
_beginthread(cancel,0,NULL);
Sleep(10000);
cout<<"End of program"<<endl;
}
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;
}
Selecting...
Cancelling the SQL
End of Cancelling
Select() ===>
Select() ===> select count(*) from test_tab a1, test_tab a2, test_tab a3, t
est_tab a4, test_tab a5 where 1=?
Select() ===>
End of program
Copyright © 1996, 2007, Sergei Kuchin, email: skuchin@ispwest.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.