73 lines
2.2 KiB
C++
73 lines
2.2 KiB
C++
#ifndef QUERY_VALUE_EXTRACTOR_HPP
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#define QUERY_VALUE_EXTRACTOR_HPP
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#include "matador/sql/fk_value_extractor.hpp"
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#include "matador/sql/types.hpp"
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#include <vector>
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namespace matador::sql {
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class value_extractor
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{
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private:
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explicit value_extractor(std::vector<any_type> &values);
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public:
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~value_extractor() = default;
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template < class Type >
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static std::vector<any_type> extract(const Type &type)
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{
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std::vector<any_type> values;
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value_extractor gen(values);
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matador::utils::access::process(gen, type);
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return std::move(values);
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}
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template<typename ValueType>
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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)
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{
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append(x);
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}
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void on_primary_key(const char *id, std::string &pk, size_t size);
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void on_revision(const char *id, unsigned long long &rev);
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template < class Type >
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void on_attribute(const char *, Type &x, const utils::field_attributes &/*attr*/ = utils::null_attributes)
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{
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append(x);
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}
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void on_attribute(const char *id, char *x, const utils::field_attributes &/*attr*/ = utils::null_attributes);
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void on_attribute(const char *id, std::string &x, const utils::field_attributes &/*attr*/ = utils::null_attributes);
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template<class Type, template < class ... > class Pointer>
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void on_belongs_to(const char * /*id*/, Pointer<Type> &x, utils::cascade_type)
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{
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values_.emplace_back(fk_value_extractor_.extract(*x));
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}
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template<class Type, template < class ... > class Pointer>
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void on_has_one(const char * /*id*/, Pointer<Type> &x, utils::cascade_type)
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{
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values_.emplace_back(fk_value_extractor_.extract(*x));
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}
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template<class ContainerType>
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void on_has_many(const char *, ContainerType &, const char *, const char *, utils::cascade_type) {}
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template<class ContainerType>
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void on_has_many(const char *, ContainerType &, utils::cascade_type) {}
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private:
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template<typename Type>
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void append(Type &value)
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{
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values_.emplace_back(data_type_traits<Type>::create_value(value));
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}
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private:
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detail::fk_value_extractor fk_value_extractor_;
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std::vector<any_type> &values_;
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};
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}
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#endif //QUERY_VALUE_EXTRACTOR_HPP
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