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Value::getAsArray function to parse array convert to correct type and

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uses inserter to fill container.

Unit tests included.
This commit is contained in:
eelke 2017-12-16 21:40:19 +01:00
parent ec930218cd
commit 2ad4a2601f
3 changed files with 55 additions and 9 deletions
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35
pgsql/Pgsql_Value.h
View file

@ -2,11 +2,14 @@
#define PGSQL_VALUE_H
#include "Pgsql_declare.h"
#include "ArrayParser.h"
#include <sstream>
#include <QString>
#include <QDateTime>
namespace Pgsql {
/** \brief Class that is returned as value of a cell to facilitate auto conversion.
*/
class Value {
@ -30,19 +33,35 @@ namespace Pgsql {
bool isString() const;
/**
*
* \param insert_iter An insert_iterator which is used to add the elements of the array to a container.
*/
template <typename E, typename I>
void getAsArray(I insert_iter) const
{
using value_type = E;
ArrayParser parser(m_val);
for (;;) {
auto res = parser.GetNextElem();
if (res.ok) {
std::string str(res.value->data(), res.value->length());
// std::istringstream iss(str);
Value val(str.c_str(), ANYOID);
value_type v;
// iss >> v;
v << val;
insert_iter = v;
}
else
break;
}
}
private:
const char *m_val;
Oid m_typ;
};
// void operator<<(QString &s, const Value &v);
// void operator<<(QDateTime &l, const Value &v);
// void operator<<(std::string &l, const Value &v);
// void operator<<(short &l, const Value &v);
// void operator<<(int &l, const Value &v);
// void operator<<(Oid &l, const Value &v);
// void operator<<(__int64 &l, const Value &v);
// void operator<<(bool &l, const Value &v);
template <typename T>
void operator<<(T &s, const Value &v)
{

6
tests/PgsqlTests/PgsqlTests.pro
View file

@ -8,12 +8,16 @@ CONFIG += qt
QT += core
QMAKE_CXXFLAGS += /std:c++17
INCLUDEPATH += C:\prog\include C:\Prog\include\pgsql
HEADERS +=
SOURCES += main.cpp \
tst_Value.cpp
tst_Value.cpp \
tst_ArrayParser.cpp \
tst_Pgsql_oids.cpp
win32:CONFIG(release, debug|release): LIBS += -L$$OUT_PWD/../../pgsql/release/ -lpgsql

23
tests/PgsqlTests/tst_Value.cpp
View file

@ -2,6 +2,9 @@
#include <gmock/gmock-matchers.h>
#include "Pgsql_Value.h"
#include "PrintTo_Qt.h"
#include <iterator>
#include <set>
#include <vector>
using namespace testing;
using namespace Pgsql;
@ -64,3 +67,23 @@ TEST(Pgsql_Value, isString_varchar)
Pgsql::Value v("1", VARCHAROID);
ASSERT_EQ(v.isString(), true);
}
TEST(Pgsql_Value, getAsArray_Ints)
{
Pgsql::Value v("{1,2}", TEXTARRAYOID);
std::vector<int> r;
v.getAsArray<int>(std::back_inserter(r));
ASSERT_EQ(r.size(), 2);
ASSERT_EQ(r[0], 1);
ASSERT_EQ(r[1], 2);
}
TEST(Pgsql_Value, getAsArray_QDateTime)
{
Pgsql::Value v("{\"2017-12-11 10:11:22\",\"2017-12-13 12:00:11\"}", TEXTARRAYOID);
std::set<QDateTime> r;
v.getAsArray<QDateTime>(std::inserter(r, r.end()));
ASSERT_EQ(r.size(), 2);
}