mirror of
https://github.com/rbock/sqlpp11.git
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452 lines
15 KiB
C++
452 lines
15 KiB
C++
/*
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* Copyright (c) 2013-2014, Roland Bock
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice, this
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* list of conditions and the following disclaimer in the documentation and/or
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* other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef SQLPP_INSERT_VALUE_LIST_H
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#define SQLPP_INSERT_VALUE_LIST_H
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#include <sqlpp11/type_traits.h>
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#include <sqlpp11/detail/logic.h>
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#include <sqlpp11/assignment.h>
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#include <sqlpp11/interpretable_list.h>
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#include <sqlpp11/interpret_tuple.h>
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#include <sqlpp11/insert_value.h>
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#include <sqlpp11/simple_column.h>
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#include <sqlpp11/no_data.h>
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namespace sqlpp
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{
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struct insert_default_values_data_t
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{};
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// COLUMN AND VALUE LIST
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struct insert_default_values_t
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{
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using _traits = make_traits<no_value_t>;
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using _recursive_traits = make_recursive_traits<>;
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// Data
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using _data_t = insert_default_values_data_t;
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// Member implementation with data and methods
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template<typename Policies>
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struct _impl_t
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{
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_data_t _data;
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};
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// Member template for adding the named member to a statement
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template<typename Policies>
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struct _member_t
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{
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using _data_t = insert_default_values_data_t;
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_impl_t<Policies> default_values;
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_impl_t<Policies>& operator()() { return default_values; }
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const _impl_t<Policies>& operator()() const { return default_values; }
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template<typename T>
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static auto _get_member(T t) -> decltype(t.default_values)
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{
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return t.default_values;
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}
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};
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template<typename Policies>
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struct _methods_t
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{};
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};
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template<typename Database, typename... Assignments>
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struct insert_list_data_t
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{
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insert_list_data_t(Assignments... assignments):
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_assignments(assignments...),
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_columns({assignments._lhs}...),
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_values(assignments._rhs...)
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{}
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insert_list_data_t(const insert_list_data_t&) = default;
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insert_list_data_t(insert_list_data_t&&) = default;
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insert_list_data_t& operator=(const insert_list_data_t&) = default;
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insert_list_data_t& operator=(insert_list_data_t&&) = default;
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~insert_list_data_t() = default;
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std::tuple<simple_column_t<typename Assignments::_column_t>...> _columns;
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std::tuple<typename Assignments::_value_t...> _values;
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std::tuple<Assignments...> _assignments; // FIXME: Need to replace _columns and _values by _assignments (connector-container requires assignments)
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interpretable_list_t<Database> _dynamic_columns;
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interpretable_list_t<Database> _dynamic_values;
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};
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template<typename Database, typename... Assignments>
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struct insert_list_t
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{
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using _traits = make_traits<no_value_t, ::sqlpp::tag::insert_list>;
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using _recursive_traits = make_recursive_traits<typename Assignments::_column_t..., typename Assignments::_value_t...>;
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using _is_dynamic = is_database<Database>;
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template<template<typename...> class Target>
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using copy_assignments_t = Target<Assignments...>; // FIXME: Nice idea to copy variadic template arguments?
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template<template<typename...> class Target, template<typename> class Wrap>
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using copy_wrapped_assignments_t = Target<Wrap<Assignments>...>;
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static_assert(_is_dynamic::value or sizeof...(Assignments), "at least one assignment required in set()");
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static_assert(not ::sqlpp::detail::has_duplicates<Assignments...>::value, "at least one duplicate argument detected in set()");
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static_assert(sqlpp::detail::all_t<is_assignment_t<Assignments>::value...>::value, "at least one argument is not an assignment in set()");
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static_assert(sqlpp::detail::none_t<must_not_insert_t<typename Assignments::_column_t>::value...>::value, "at least one assignment is prohibited by its column definition in set()");
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#warning: Need to reactivate these checks
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/*
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using _column_required_tables = typename ::sqlpp::detail::make_joined_set<typename Assignments::_column_t::_required_tables...>::type;
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using _value_required_tables = typename ::sqlpp::detail::make_joined_set<typename Assignments::value_type::_required_tables...>::type;
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using _provided_tables = ::sqlpp::detail::type_set<>;
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using _required_tables = typename ::sqlpp::detail::make_joined_set<_column_required_tables, _value_required_tables>::type;
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static_assert(sizeof...(Assignments) ? (_column_required_tables::size::value == 1) : true, "set() contains assignments for tables from several columns");
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static_assert(::sqlpp::detail::is_subset_of<_value_required_tables, _column_required_tables>::value, "set() contains values from foreign tables");
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*/
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// Data
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using _data_t = insert_list_data_t<Database, Assignments...>;
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// Member implementation with data and methods
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template <typename Policies>
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struct _impl_t
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{
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template<typename Assignment>
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void add_ntc(Assignment assignment)
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{
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add<Assignment, std::false_type>(assignment);
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}
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template<typename Assignment, typename TableCheckRequired = std::true_type>
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void add(Assignment assignment)
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{
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static_assert(_is_dynamic::value, "add must not be called for static from()");
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static_assert(is_assignment_t<Assignment>::value, "add() arguments require to be assigments");
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static_assert(not must_not_insert_t<typename Assignment::_column_t>::value, "add() argument must not be used in insert");
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static_assert(not TableCheckRequired::value or Policies::template _no_unknown_tables<Assignment>::value, "add() contains a column from a foreign table");
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using ok = ::sqlpp::detail::all_t<
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_is_dynamic::value,
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is_assignment_t<Assignment>::value,
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not must_not_insert_t<typename Assignment::_column_t>::value,
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(not TableCheckRequired::value or Policies::template _no_unknown_tables<Assignment>::value)>;
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_add_impl(assignment, ok()); // dispatch to prevent compile messages after the static_assert
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}
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private:
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template<typename Assignment>
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void _add_impl(Assignment assignment, const std::true_type&)
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{
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_data._dynamic_columns.emplace_back(simple_column_t<typename Assignment::_column_t>{assignment._lhs});
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_data._dynamic_values.emplace_back(assignment._rhs);
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}
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template<typename Assignment>
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void _add_impl(Assignment assignment, const std::false_type&);
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public:
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_data_t _data;
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};
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// Member template for adding the named member to a statement
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template<typename Policies>
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struct _member_t
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{
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using _data_t = insert_list_data_t<Database, Assignments...>;
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_impl_t<Policies> insert_list;
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_impl_t<Policies>& operator()() { return insert_list; }
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const _impl_t<Policies>& operator()() const { return insert_list; }
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template<typename T>
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static auto _get_member(T t) -> decltype(t.insert_list)
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{
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return t.insert_list;
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}
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};
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// Additional methods for the statement
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template<typename Policies>
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struct _methods_t
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{
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};
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};
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template<typename... Columns>
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struct column_list_data_t
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{
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column_list_data_t(Columns... columns):
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_columns(simple_column_t<Columns>{columns}...)
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{}
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column_list_data_t(const column_list_data_t&) = default;
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column_list_data_t(column_list_data_t&&) = default;
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column_list_data_t& operator=(const column_list_data_t&) = default;
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column_list_data_t& operator=(column_list_data_t&&) = default;
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~column_list_data_t() = default;
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#warning need to define just one version of value_tuple_t
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using _value_tuple_t = std::tuple<insert_value_t<Columns>...>;
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std::tuple<simple_column_t<Columns>...> _columns;
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std::vector<_value_tuple_t> _insert_values;
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};
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template<typename... Columns>
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struct column_list_t
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{
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using _traits = make_traits<no_value_t, ::sqlpp::tag::column_list>;
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using _recursive_traits = make_recursive_traits<Columns...>;
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static_assert(sizeof...(Columns), "at least one column required in columns()");
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static_assert(not ::sqlpp::detail::has_duplicates<Columns...>::value, "at least one duplicate argument detected in columns()");
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static_assert(::sqlpp::detail::all_t<is_column_t<Columns>::value...>::value, "at least one argument is not a column in columns()");
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static_assert(::sqlpp::detail::none_t<must_not_insert_t<Columns>::value...>::value, "at least one column argument has a must_not_insert flag in its definition");
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using _value_tuple_t = std::tuple<insert_value_t<Columns>...>;
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static_assert(required_tables_of<column_list_t>::size::value == 1, "columns from multiple tables in columns()");
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// Data
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using _data_t = column_list_data_t<Columns...>;
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// Member implementation with data and methods
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template <typename Policies>
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struct _impl_t
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{
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template<typename... Assignments>
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void add(Assignments... assignments)
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{
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static_assert(::sqlpp::detail::all_t<is_assignment_t<Assignments>::value...>::value, "add_values() arguments have to be assignments");
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using _arg_value_tuple = std::tuple<insert_value_t<typename Assignments::_column_t>...>;
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using _args_correct = std::is_same<_arg_value_tuple, _value_tuple_t>;
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static_assert(_args_correct::value, "add_values() arguments do not match columns() arguments");
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using ok = ::sqlpp::detail::all_t<
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::sqlpp::detail::all_t<is_assignment_t<Assignments>::value...>::value,
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_args_correct::value>;
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_add_impl(ok(), assignments...); // dispatch to prevent compile messages after the static_assert
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}
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private:
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template<typename... Assignments>
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void _add_impl(const std::true_type&, Assignments... assignments)
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{
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return _data._insert_values.emplace_back(insert_value_t<typename Assignments::_column_t>{assignments}...);
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}
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template<typename... Assignments>
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void _add_impl(const std::false_type&, Assignments... assignments);
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public:
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_data_t _data;
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};
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// Member template for adding the named member to a statement
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template<typename Policies>
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struct _member_t
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{
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using _data_t = column_list_data_t<Columns...>;
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_impl_t<Policies> values;
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_impl_t<Policies>& operator()() { return values; }
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const _impl_t<Policies>& operator()() const { return values; }
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template<typename T>
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static auto _get_member(T t) -> decltype(t.values)
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{
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return t.values;
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}
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};
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// Additional methods for the statement
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template<typename Policies>
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struct _methods_t
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{
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};
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/*
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bool empty() const
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{
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return _insert_values.empty();
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}
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*/
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};
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// NO HAVING YET
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struct no_insert_value_list_t
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{
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using _traits = make_traits<no_value_t, ::sqlpp::tag::noop>;
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using _recursive_traits = make_recursive_traits<>;
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// Data
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using _data_t = no_data_t;
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// Member implementation with data and methods
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template<typename Policies>
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struct _impl_t
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{
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_data_t _data;
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};
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// Member template for adding the named member to a statement
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template<typename Policies>
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struct _member_t
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{
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using _data_t = no_data_t;
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_impl_t<Policies> no_insert_values;
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_impl_t<Policies>& operator()() { return no_insert_values; }
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const _impl_t<Policies>& operator()() const { return no_insert_values; }
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template<typename T>
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static auto _get_member(T t) -> decltype(t.no_insert_values)
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{
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return t.no_insert_values;
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}
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};
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template<typename Policies>
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struct _methods_t
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{
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using _database_t = typename Policies::_database_t;
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template<typename T>
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using _new_statement_t = typename Policies::template _new_statement_t<no_insert_value_list_t, T>;
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auto default_values()
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-> _new_statement_t<insert_default_values_t>
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{
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return { *static_cast<typename Policies::_statement_t*>(this), insert_default_values_data_t{} };
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}
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template<typename... Args>
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auto columns(Args... args)
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-> _new_statement_t<column_list_t<Args...>>
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{
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return { *static_cast<typename Policies::_statement_t*>(this), column_list_data_t<Args...>{args...} };
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}
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template<typename... Args>
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auto set(Args... args)
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-> _new_statement_t<insert_list_t<void, Args...>>
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{
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return { *static_cast<typename Policies::_statement_t*>(this), insert_list_data_t<void, Args...>{args...} };
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}
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template<typename... Args>
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auto dynamic_set(Args... args)
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-> _new_statement_t<insert_list_t<_database_t, Args...>>
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{
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static_assert(not std::is_same<_database_t, void>::value, "dynamic_set must not be called in a static statement");
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return { *static_cast<typename Policies::_statement_t*>(this), insert_list_data_t<_database_t, Args...>{args...} };
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}
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};
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};
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// Interpreters
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template<typename Context>
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struct serializer_t<Context, insert_default_values_data_t>
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{
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using T = insert_default_values_data_t;
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static Context& _(const T& t, Context& context)
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{
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context << " DEFAULT VALUES";
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return context;
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}
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};
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template<typename Context, typename... Columns>
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struct serializer_t<Context, column_list_data_t<Columns...>>
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{
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using T = column_list_data_t<Columns...>;
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static Context& _(const T& t, Context& context)
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{
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context << " (";
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interpret_tuple(t._columns, ",", context);
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context << ")";
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context << " VALUES ";
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bool first = true;
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for (const auto& row : t._insert_values)
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{
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if (not first)
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context << ',';
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else
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first = false;
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context << '(';
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interpret_tuple(row, ",", context);
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context << ')';
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}
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return context;
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}
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};
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template<typename Context, typename Database, typename... Assignments>
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struct serializer_t<Context, insert_list_data_t<Database, Assignments...>>
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{
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using T = insert_list_data_t<Database, Assignments...>;
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static Context& _(const T& t, Context& context)
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{
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if (sizeof...(Assignments) + t._dynamic_columns.size() == 0)
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{
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serialize(insert_default_values_data_t(), context);
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}
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else
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{
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context << " (";
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interpret_tuple(t._columns, ",", context);
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if (sizeof...(Assignments) and not t._dynamic_columns.empty())
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context << ',';
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interpret_list(t._dynamic_columns, ',', context);
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context << ") VALUES(";
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interpret_tuple(t._values, ",", context);
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if (sizeof...(Assignments) and not t._dynamic_values.empty())
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context << ',';
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interpret_list(t._dynamic_values, ',', context);
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context << ")";
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}
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return context;
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}
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};
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}
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#endif
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