blob: 3500cb04a9083319ca87bbf5dc8db82ccbf4a6cd (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
/** Common implementation for statement parameter lists.
*
* See the connection_base hierarchy for more about prepared statements
*
* Copyright (c) 2000-2019, Jeroen T. Vermeulen.
*
* See COPYING for copyright license. If you did not receive a file called
* COPYING with this source code, please notify the distributor of this mistake,
* or contact the author.
*/
#include "pqxx/compiler-internal.hxx"
#include "pqxx/util"
#include "pqxx/internal/statement_parameters.hxx"
void pqxx::internal::statement_parameters::add_checked_param(
const std::string &value,
bool nonnull,
bool binary)
{
m_nonnull.push_back(nonnull);
if (nonnull) m_values.push_back(value);
m_binary.push_back(binary);
}
int pqxx::internal::statement_parameters::marshall(
std::vector<const char *> &values,
std::vector<int> &lengths,
std::vector<int> &binaries) const
{
const auto elements = m_nonnull.size();
const auto array_size = elements + 1;
values.clear();
values.resize(array_size, nullptr);
lengths.clear();
lengths.resize(array_size, 0);
// "Unpack" from m_values, which skips arguments that are null, to the
// outputs which represent all parameters including nulls.
size_t arg = 0;
for (size_t param = 0; param < elements; ++param)
if (m_nonnull[param])
{
values[param] = m_values[arg].c_str();
lengths[param] = int(m_values[arg].size());
++arg;
}
// The binaries array is simpler: it maps 1-on-1.
binaries.resize(array_size);
for (size_t param = 0; param < elements; ++param)
binaries[param] = int(m_binary[param]);
binaries.back() = 0;
return int(elements);
}
|
