175 lines
7.6 KiB
C++
175 lines
7.6 KiB
C++
#ifndef QUERY_COLUMN_DEFINITION_HPP
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#define QUERY_COLUMN_DEFINITION_HPP
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#include "matador/utils/basic_types.hpp"
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#include "matador/utils/default_type_traits.hpp"
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#include "matador/utils/field_attributes.hpp"
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#include <memory>
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namespace matador::object {
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enum class null_option_type : uint8_t {
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NULLABLE, NOT_NULL
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};
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class object_definition;
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struct attribute_options {
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utils::field_attributes attributes;
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null_option_type null_option{null_option_type::NOT_NULL};
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int index{-1};
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};
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class attribute_definition {
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public:
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explicit attribute_definition(const char *name); // NOLINT(*-explicit-constructor)
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explicit attribute_definition(std::string name); // NOLINT(*-explicit-constructor)
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attribute_definition(const attribute_definition&) = default;
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attribute_definition& operator=(const attribute_definition&) = default;
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attribute_definition(attribute_definition&&) noexcept = default;
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attribute_definition& operator=(attribute_definition&&) noexcept = default;
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attribute_definition() = default;
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template<typename Type>
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attribute_definition(std::string name, const utils::field_attributes& attr)
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: attribute_definition(std::move(name), utils::data_type_traits<Type>::type(attr.size()), attr)
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{}
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template<typename Type>
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attribute_definition(std::string name, const Type &, const utils::field_attributes& attr, null_option_type null_opt)
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: attribute_definition(std::move(name), utils::data_type_traits<Type>::type(attr.size()), attr, null_opt)
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{}
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template<size_t SIZE>
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attribute_definition(std::string name, const char (&)[SIZE], const utils::field_attributes& attr, const null_option_type null_opt)
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: attribute_definition(std::move(name), utils::data_type_traits<const char*>::type(attr.size()), attr, null_opt)
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{}
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attribute_definition(std::string name, utils::basic_type type, const utils::field_attributes&, null_option_type null_opt, int index = 0);
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template<typename Type>
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attribute_definition(std::string name, const std::shared_ptr<attribute_definition> &ref_column, const utils::field_attributes& attr, null_option_type null_opt)
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: attribute_definition(std::move(name), utils::data_type_traits<Type>::type(attr.size()), ref_column, attr, null_opt)
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{}
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attribute_definition(std::string name, utils::basic_type type, int index, const std::shared_ptr<attribute_definition> &ref_column, const utils::field_attributes& attr, null_option_type null_opt);
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attribute_definition(std::string name, utils::basic_type type, const std::shared_ptr<attribute_definition> &ref_column = {});
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attribute_definition(std::string name, utils::basic_type type, const attribute_options& options, const std::shared_ptr<object_definition>& obj = {}, const std::shared_ptr<attribute_definition> &ref_column = {});
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[[nodiscard]] const std::string& name() const;
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void name(const std::string& n);
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[[nodiscard]] std::string full_name() const;
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[[nodiscard]] std::shared_ptr<object_definition> object() const;
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void object(const std::shared_ptr<object_definition> &obj);
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[[nodiscard]] int index() const;
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[[nodiscard]] const utils::field_attributes& attributes() const;
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[[nodiscard]] utils::field_attributes& attributes();
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[[nodiscard]] bool is_nullable() const;
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[[nodiscard]] utils::basic_type type() const;
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void change_type(utils::basic_type type, const utils::field_attributes &attr = utils::null_attributes);
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template < typename Type >
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void change_type(const utils::field_attributes &attr = utils::null_attributes) {
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type_ = utils::data_type_traits<Type>::type(attr.size());
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}
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[[nodiscard]] std::shared_ptr<attribute_definition> reference_column() const;
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[[nodiscard]] bool is_foreign_reference() const;
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[[nodiscard]] bool is_integer() const;
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[[nodiscard]] bool is_floating_point() const;
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[[nodiscard]] bool is_bool() const;
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[[nodiscard]] bool is_string() const;
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[[nodiscard]] bool is_varchar() const;
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[[nodiscard]] bool is_date() const;
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[[nodiscard]] bool is_time() const;
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[[nodiscard]] bool is_blob() const;
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[[nodiscard]] bool is_null() const;
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template< typename Type >
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[[nodiscard]] bool is_type_of() const {
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return type() == utils::data_type_traits<Type>::type(attributes().size());
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}
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private:
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friend class object_definition;
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std::string name_;
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std::shared_ptr<object_definition> object_{};
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attribute_options options_;
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utils::basic_type type_{utils::basic_type::type_null};
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std::shared_ptr<attribute_definition> reference_column_;
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};
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/**
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* User defined literal to have a shortcut creating a column object
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* @param name Name of the column
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* @param type
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* @param attr Length of the column name
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* @param null_opt
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* @return A column object with a given name
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*/
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attribute_definition make_column(const std::string &name, utils::basic_type type, utils::field_attributes attr = utils::null_attributes, null_option_type null_opt = null_option_type::NOT_NULL);
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template < typename Type >
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attribute_definition make_column(const std::string &name, utils::field_attributes attr = utils::null_attributes, null_option_type null_opt = null_option_type::NOT_NULL)
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{
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return make_column(name, utils::data_type_traits<Type>::type(0), attr, null_opt);
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}
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template <>
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attribute_definition make_column<std::string>(const std::string &name, utils::field_attributes attr, null_option_type null_opt);
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template < typename Type >
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attribute_definition make_pk_column(const std::string &name, size_t size = 0)
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{
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return make_column<Type>(name, { size, utils::constraints::PRIMARY_KEY });
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}
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template <>
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attribute_definition make_pk_column<std::string>(const std::string &name, size_t size);
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template < typename Type >
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attribute_definition make_fk_column(const std::string &name, size_t size, const std::shared_ptr<attribute_definition> &ref_column) {
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return {name, utils::data_type_traits<Type>::type(size), ref_column, { size, utils::constraints::FOREIGN_KEY }};
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}
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template < typename Type >
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[[maybe_unused]] attribute_definition make_fk_column(const std::string &name, const std::shared_ptr<attribute_definition> &ref_column)
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{
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return {name, utils::data_type_traits<Type>::type(0), 0, ref_column, { 0, utils::constraints::FOREIGN_KEY }, null_option_type::NOT_NULL};
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}
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template <>
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[[maybe_unused]] attribute_definition make_fk_column<std::string>(const std::string &name, size_t size, const std::shared_ptr<attribute_definition> &ref_column);
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template < typename Type >
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[[maybe_unused]] attribute_definition make_fk_column(const std::string &name, size_t size, const std::string &ref_table_name, const std::string &ref_column_name) {
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return {
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name, utils::data_type_traits<Type>::type(size), 0,
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std::make_shared<attribute_definition>(ref_column_name, ref_table_name, utils::data_type_traits<Type>::type(size), utils::constraints::FOREIGN_KEY),
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{ 0, utils::constraints::FOREIGN_KEY }, null_option_type::NOT_NULL
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};
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}
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template < typename Type >
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[[maybe_unused]] attribute_definition make_fk_column(const std::string &name, const std::string &ref_table_name, const std::string &ref_column_name) {
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return {
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name, utils::data_type_traits<Type>::type(0), 0,
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std::make_shared<attribute_definition>(ref_column_name, ref_table_name, utils::data_type_traits<Type>::type(0), utils::constraints::FOREIGN_KEY),
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{ 0, utils::constraints::FOREIGN_KEY }, null_option_type::NOT_NULL
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};
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}
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template <>
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[[maybe_unused]] attribute_definition make_fk_column<std::string>(const std::string &name, const std::string &ref_table_name, const std::string &ref_column_name);
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template <>
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[[maybe_unused]] attribute_definition make_fk_column<std::string>(const std::string &name, size_t size, const std::string &ref_table_name, const std::string &ref_column_name);
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}
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#endif //QUERY_COLUMN_DEFINITION_HPP
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