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// file : odb/oracle/traits.cxx
// author : Constantin Michael <constantin@codesynthesis.com>
// copyright : Copyright (c) 2005-2011 Code Synthesis Tools CC
// license : ODB NCUEL; see accompanying LICENSE file
#include <cstddef> // std::size_t
#include <cstring> // std::memcpy, std::strlen
#include <cassert>
#include <odb/oracle/traits.hxx>
using namespace std;
namespace odb
{
namespace oracle
{
//
// string_value_traits
//
void string_value_traits::
set_image (char* b,
size_t c,
size_t& n,
bool& is_null,
const string& v)
{
is_null = false;
n = v.size ();
assert (n <= c);
if (n != 0 && n <= c)
memcpy (b, v.c_str (), n);
}
//
// c_string_value_traits
//
void c_string_value_traits::
set_image (char* b,
size_t c,
size_t& n,
bool& is_null,
const char* v)
{
is_null = false;
n = strlen (v);
assert (n <= c);
if (n != 0 && n <= c)
memcpy (b, v, n);
}
//
// default_value_traits<vector<char>, id_raw>
//
void default_value_traits<vector<char>, id_raw>::
set_image (char* b,
size_t c,
size_t& n,
bool& is_null,
const value_type& v)
{
is_null = false;
n = v.size ();
assert (n <= c);
// std::vector::data() may not be available in older compilers.
//
if (n != 0)
memcpy (b, &v.front (), n);
}
//
// string_lob_value_traits
//
bool string_lob_value_traits::
result_callback (void* c, void* b, ub4 s, chunk_position p)
{
string& v (*static_cast<string*> (c));
switch (p)
{
case one_chunk:
case first_chunk:
{
v.clear ();
// Falling through.
}
case next_chunk:
case last_chunk:
{
v.append (static_cast<char*> (b), s);
break;
}
}
return true;
}
bool string_lob_value_traits::
param_callback (const void* ctx,
ub4* pos_ctx,
void** b,
ub4* s,
chunk_position* p,
void* temp_b,
ub4 cap)
{
const string& v (*static_cast<const string*> (ctx));
// @@ We rely on *pos_ctx == 0 for the first call. Make sure that this is
// set by the generated code, and update comment in oracle-types.hxx
// specifying that this is so.
//
*s = static_cast<ub4> (v.size ()) - *pos_ctx;
if (*s <= cap)
*p = *pos_ctx == 0 ? one_chunk : last_chunk;
else
{
*p = *pos_ctx == 0 ? first_chunk : next_chunk;
*s = cap;
*pos_ctx += *s;
}
*b = temp_b;
memcpy (temp_b, v.c_str () + *pos_ctx, *s);
return true;
}
//
// c_string_lob_value_traits
//
bool c_string_lob_value_traits::
param_callback (const void* ctx,
ub4* pos_ctx,
void** b,
ub4* s,
chunk_position* p,
void* temp_b,
ub4 cap)
{
const char* v (static_cast<const char*> (ctx));
// @@ We rely on *pos_ctx == 0 for the first call. Make sure that this is
// set by the generated code, and update comment in oracle-types.hxx
// specifying that this is so.
//
*s = static_cast<ub4> (strlen (v)) - *pos_ctx;
if (*s <= cap)
*p = *pos_ctx == 0 ? one_chunk : last_chunk;
else
{
*p = *pos_ctx == 0 ? first_chunk : next_chunk;
*s = cap;
*pos_ctx += *s;
}
*b = temp_b;
memcpy (temp_b, v + *pos_ctx, *s);
return true;
}
//
// default_value_traits<std::vector<char>, id_blob>
//
bool default_value_traits<std::vector<char>, id_blob>::
result_callback (void* c, void* b, ub4 s, chunk_position p)
{
value_type& v (*static_cast<value_type*> (c));
switch (p)
{
case one_chunk:
case first_chunk:
{
v.clear ();
// Falling through.
}
case next_chunk:
case last_chunk:
{
char* cb (static_cast<char*> (b));
v.insert (v.end (), cb, cb + s);
break;
}
}
return true;
}
bool default_value_traits<std::vector<char>, id_blob>::
param_callback (const void* ctx,
ub4* pos_ctx,
void** b,
ub4* s,
chunk_position* p,
void* temp_b,
ub4 cap)
{
const value_type& v (*static_cast<const value_type*> (ctx));
// @@ We rely on *position_context == 0 for the first call. Make sure
// that this is set by the generated code and update the comment in
// oracle-types.hxx specifying that this is so.
//
*s = static_cast<ub4> (v.size ()) - *pos_ctx;
if (*s <= cap)
*p = *pos_ctx == 0 ? one_chunk : last_chunk;
else
{
*p = *pos_ctx == 0 ? first_chunk : next_chunk;
*s = cap;
*pos_ctx += *s;
}
*b = temp_b;
memcpy (temp_b, &v[*pos_ctx], *s);
return true;
}
}
}
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