odb's view
//db.hxx:
#ifndef PG_HXX_INCLUDED
#define PG_HXX_INCLUDED
#include <memory> // std::auto_ptr
#include <odb/database.hxx>
#include <odb/pgsql/database.hxx>
#include <odb/oracle/database.hxx>
namespace eachma{
namespace db{
static const std::auto_ptr<odb::database> pgdb
(new odb::pgsql::database ("tnt","pw","tnt","localhost",5432));
static const std::auto_ptr<odb::database> oradb
(new odb::oracle::database ("jw_xk","pwd","jwnew","211.69.240.2",1521));
}
};
#endif // DB_HXX_INCLUDED
hxx:
#ifndef JW_HXX_INCLUDED
#define JW_HXX_INCLUDED
#include <string>
#include <odb/core.hxx>
#include <odb/tr1/memory.hxx>
namespace eachma{
namespace jw{
#pragma db view query("SELECT XH, XM " \
"FROM JW.XJ_XJB WHERE XH LIKE (?)")
struct pupil
{
#pragma db type("VARCHAR(256)")
std::string xh;
#pragma db type("VARCHAR(256)")
std::string xm;
};
void print_pupils();
}}
#endif // JW_HXX_INCLUDED
cxx:
#include "jw.hxx"
#include <vector>
#include <odb/database.hxx>
#include <memory>
#include <odb/transaction.hxx>
#include "../utils/db.hxx"
#include "jw-odb.hxx"
#include <iostream>
namespace eachma
{
namespace jw
{
void print_pupils()
{
try
{
odb::transaction t (eachma::db::oradb->begin ());
odb::result<pupil> r(eachma::db::oradb->query<pupil>("'1410%'"));
for (odb::result<pupil>::iterator i (r.begin ()); i != r.end (); ++i)
{
std::cout << i->xh << ", " << i->xm <<std::endl;
}
t.commit();
}
catch(const odb::exception& e)
{
std::cout << e.what()<<std::endl;
}
}
}
}