Row of SQL Query results. More...

#include <gnc-sql-result.hpp>

Public Member Functions
	GncSqlRow (GncSqlResult::IteratorImpl *iter)

GncSqlRow &	operator++ ()

GncSqlRow &	operator* ()

std::optional< int64_t >	get_int_at_col (const char *col) const

std::optional< double >	get_float_at_col (const char *col) const

std::optional< double >	get_double_at_col (const char *col) const

std::optional< std::string >	get_string_at_col (const char *col) const

std::optional< time64 >	get_time64_at_col (const char *col) const

bool	is_col_null (const char *col) const noexcept

Friends
bool	operator!= (const GncSqlRow &, const GncSqlRow &)

Detailed Description

Row of SQL Query results.

This is a "pointer" class of a pimpl pattern, the implementation being GncSqlResult::IteratorImpl. It's designed to present a std::forward_iterator like interface for use with range-for while allowing for wrapping a C API.

Important Implementation Note: Operator++() as written requires that the sentinel GncSqlRow returned by GncSqlResult::end() has m_impl = nullptr in order to terminate the loop condition. This is a bit of a hack and might be a problem with a different SQL interface library from libdbi.

Note that GncSqlResult::begin and GncSqlRow::operator++() return GncSqlRow&. This is necessary for operator++() to be called: Using operator ++() on a pointer performs pointer arithmetic rather than calling the pointed-to-class's operator++() and C++'s range-for uses operator++() directly on whatever begin() gives it.

Definition at line 80 of file gnc-sql-result.hpp.

The documentation for this class was generated from the following files:

Public Member Functions

Friends

Detailed Description