OTL 4.0, Example 639 (#define OTL_UNCAUGHT_EXCEPTION_ON)

This example demonstrates #define OTL_UNCAUGHT_EXCEPTION_ON. See also problem 46.

Source Code

#include <iostream>
using namespace std;

#include <stdio.h>
// Compile OTL 4.0/ODBC in Windows. Informix CLI uses the  
// regular ODBC header files in Windows
#define OTL_ODBC

// Uncomment the #defines below in Linux / Unix
//#define OTL_ODBC_UNIX
//#define OTL_INFORMIX_CLI
#define OTL_STL // enable STL / ANSI C++ compliance.
#define OTL_UNCAUGHT_EXCEPTION_ON // enable safe exception handling / error
// recovery.
#include <otlv4.h> // include the OTL 4.0 header file

otl_connect db; // connect object

void insert()
// insert rows into table
{
otl_stream o(10, // buffer size
"insert into test_tab values(:f1<int>,:f2<char[31]>)",
// SQL statement
db // connect object
);
o.set_commit(0); // turning off the stream's autocommit flag
char tmp[32];

for(int i=1;i<=100;++i){
sprintf(tmp,"Name%d",i);
o<<i;
if(i==17)
throw "Making a little trouble in the middle of the INSERT...";
o<<tmp;
}
o.flush(); // flushing the stream's buffer
db.commit(); // committing the changes to the database
}

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

db.rlogon("informix/tigger@informixsql"); // connect to Informix

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

}

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.rollback(); // roll back transaction
}

catch(const char* msg){
cerr<<msg<<endl; // print out the message
db.rollback(); // roll back transaction
}

db.logoff(); // disconnect from Informix

return 0;

}

Output

Making a little trouble in the middle of the INSERT...

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

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