query/include/matador/sql/value_generator.hpp

71 lines
2.0 KiB
C++

#ifndef QUERY_VALUE_GENERATOR_HPP
#define QUERY_VALUE_GENERATOR_HPP
#include "matador/sql/any_type.hpp"
#include "matador/utils/access.hpp"
#include "matador/utils/field_attributes.hpp"
#include "matador/utils/identifiable.hpp"
#include <vector>
namespace matador::utils {
enum class cascade_type;
}
namespace matador::sql {
class value_generator
{
private:
explicit value_generator(std::vector<any_type> &values);
public:
~value_generator() = default;
template < class Type >
static std::vector<any_type> generate()
{
std::vector<any_type> values;
value_generator gen(values);
Type obj;
matador::utils::access::process(gen, obj);
return std::move(values);
}
template<typename ValueType>
void on_primary_key(const char *, ValueType &x, typename std::enable_if<std::is_integral<ValueType>::value && !std::is_same<bool, ValueType>::value>::type* = 0)
{
append(x);
}
void on_primary_key(const char *id, std::string &pk, size_t size);
void on_revision(const char *id, unsigned long long &rev);
template < class Type >
void on_attribute(const char *, Type &x, const utils::field_attributes &/*attr*/ = utils::null_attributes)
{
append(x);
}
void on_attribute(const char *id, char *x, const utils::field_attributes &/*attr*/ = utils::null_attributes);
void on_attribute(const char *id, std::string &x, const utils::field_attributes &/*attr*/ = utils::null_attributes);
void on_belongs_to(const char *id, utils::identifiable &x, utils::cascade_type);
void on_has_one(const char *id, utils::identifiable &x, utils::cascade_type);
template<class ContainerType>
void on_has_many(const char *, ContainerType &, const char *, const char *, utils::cascade_type) {}
template<class ContainerType>
void on_has_many(const char *, ContainerType &, utils::cascade_type) {}
private:
template<typename Type>
void append(Type &value)
{
values_.emplace_back(value);
}
private:
std::vector<any_type> &values_;
};
}
#endif //QUERY_VALUE_GENERATOR_HPP