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// file : odb/statement.hxx
// copyright : Copyright (c) 2005-2018 Code Synthesis Tools CC
// license : GNU GPL v2; see accompanying LICENSE file
#ifndef ODB_STATEMENT_HXX
#define ODB_STATEMENT_HXX
#include <odb/pre.hxx>
#include <string>
#include <cstddef> // std::size_t
#include <odb/forward.hxx> // connection
#include <odb/details/export.hxx>
#include <odb/details/shared-ptr.hxx>
namespace odb
{
class LIBODB_EXPORT statement: public details::shared_base
{
private:
statement (const statement&);
statement& operator= (const statement&);
public:
typedef odb::connection connection_type;
virtual const char*
text () const = 0;
virtual connection_type&
connection () = 0;
virtual
~statement () = 0;
protected:
statement () {}
// Statement processing. Kept public only for testing.
//
public:
// Expected statement structure:
//
// INSERT INTO table\n
// [(a,\n
// b)\n]
// [OUTPUT ...\n]
// [VALUES\n
// ($1,\n
// $2)[\n]]
// [DEFAULT VALUES[\n]]
// [RETURNING ...]
// [; SELECT ...]
//
static void
process_insert (std::string& result,
const char* statement,
const void* const* bind, // Array of bind buffer pointers.
std::size_t bind_size, // Number of bind elements.
std::size_t bind_skip, // Offset to the next bind.
char param_symbol, // $, ?, :, etc.
char param_symbol2 = '\0');
// Expected statement structure:
//
// UPDATE table\n
// SET\n
// a=$1,\n
// b=$2[\n]
// [OUTPUT ...]
// [WHERE ...]
//
static void
process_update (std::string& result,
const char* statement,
const void* const* bind, // Array of bind buffer pointers.
std::size_t bind_size, // Number of bind elements.
std::size_t bind_skip, // Offset to the next bind.
char param_symbol, // $, ?, :, etc.
char param_symbol2 = '\0');
// Expected statement structure:
//
// SELECT\n
// [schema.]table.a [AS b],\n
// alias.b\n
// FROM [schema.]table[\n]
// [{A-Z }* JOIN [schema.]table [AS alias][ ON ...][\n]]*
// [WHERE ...]
//
static void
process_select (std::string& result,
const char* statement,
const void* const* bind, // Array of bind buffer pointers.
std::size_t bind_size, // Number of bind elements.
std::size_t bind_skip, // Offset to the next bind.
char quote_open, // Identifier opening quote.
char quote_close, // Identifier closing quote.
bool optimize, // Remove unused JOINs.
bool as = true); // JOINs use AS keyword.
};
}
#include <odb/post.hxx>
#endif // ODB_STATEMENT_HXX
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