OTL 4.0, Example 698 (Oracle 11.2, native support for 64-bit ints)

This example demonstrates a native support for 64-bit ints in Oracle 11.2.

Source Code

#include <iostream>
using namespace std;

#include <stdio.h>
#define OTL_ORA11G_R2 // Compile OTL 4.0/OCI11.2

#if defined(__BORLANDC__)
#define OTL_BIGINT __int64 // Enabling G++ 64-bit integers
#define OTL_UBIGINT unsigned __int64 // Enabling G++ 64-bit integers
#elif !defined(_MSC_VER)
#define OTL_BIGINT long long // Enabling G++ 64-bit integers
#define OTL_UBIGINT unsigned long long // Enabling G++ 64-bit integers
#else
#define OTL_BIGINT __int64 // Enabling VC++ 64-bit integers
#define OTL_UBIGINT unsigned __int64 // Enabling VC++ 64-bit integers
#endif
#include <otlv4.h> // include the OTL 4.0 header file

const OTL_UBIGINT UBIG_VAL1=18446744073709551615ULL;

#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<bigint>,:f2<char[31]>,:f3<ubigint>)",
// SQL statement
db // connect object
);
char tmp[32];

for(OTL_BIGINT i=1;i<=100;++i){
#if defined(_MSC_VER)
#if (_MSC_VER >= 1400) // VC++ 8.0 or higher
sprintf_s(tmp,sizeof(tmp),"Name%d",static_cast<int>(i));
#else
sprintf(tmp,"Name%d",static_cast<int>(i));
#endif
#else
sprintf(tmp,"Name%d",static_cast<int>(i));
#endif
o<<i<<tmp<<UBIG_VAL1;
}
}

void select()
{
otl_stream i(50, // buffer size
"select f1 :#1<bigint>, f2, f3 :#3<ubigint> "
// the default mapping of f1 and f3 needs to be overridden
// explicitly when (u)bigint's are used in a combination with
// OTL/OCIx, because the default mapping maps
// Oracle NUMBERs into double containers, which are not
// big enough to hold (unsigned) 64-bit integer values.
"from test_tab "
"where f1>=:f<bigint> and f1<=:ff<bigint>*2",
// SELECT statement
db // connect object
);
// create select stream

OTL_BIGINT f1;
char f2[31];
OTL_UBIGINT f3;

i<<static_cast<OTL_BIGINT>(8)
<<static_cast<OTL_BIGINT>(8); // assigning :f = 8; :ff = 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>>f2>>f3;
printf("f1=%lld, f2=%s, f3=%llu\n",f1,f2,f3);
}

}

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

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

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 number, f2 varchar2(30), f3 number)"
); // 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 Oracle

return 0;

}

Output

f1=8, f2=Name8, f3=18446744073709551615
f1=9, f2=Name9, f3=18446744073709551615
f1=10, f2=Name10, f3=18446744073709551615
f1=11, f2=Name11, f3=18446744073709551615
f1=12, f2=Name12, f3=18446744073709551615
f1=13, f2=Name13, f3=18446744073709551615
f1=14, f2=Name14, f3=18446744073709551615
f1=15, f2=Name15, f3=18446744073709551615
f1=16, f2=Name16, f3=18446744073709551615


Examples Contents Go Home

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

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.