#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 © 1996-2023, 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.