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78 lines
2.6 KiB
C++
78 lines
2.6 KiB
C++
/*
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* Copyright (c) 2013, 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_COLUMN_H
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#define SQLPP_COLUMN_H
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#include <ostream>
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#include <sqlpp11/expression.h>
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#include <sqlpp11/alias.h>
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#include <sqlpp11/column_fwd.h>
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#include <sqlpp11/detail/wrong.h>
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#include <sqlpp11/type_traits.h>
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#include <sqlpp11/sort_order.h>
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namespace sqlpp
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{
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template<typename Table, typename ColumnSpec>
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struct column_t: public ColumnSpec::_value_type::template operators<column_t<Table, ColumnSpec>>
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{
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using _table = Table;
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using _column_type = typename ColumnSpec::_column_type;
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struct _value_type: ColumnSpec::_value_type
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{
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using _is_expression = tag_yes;
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using _is_named_expression = tag_yes;
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using _is_alias = tag_no;
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};
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using _name_t = typename ColumnSpec::_name_t;
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template<typename T>
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using _member_t = typename ColumnSpec::template _member_t<T>;
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template<typename Db>
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void serialize(std::ostream& os, Db& db) const
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{
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os << Table::_name_t::_get_name() << '.' << _name_t::_get_name();
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}
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template<typename alias_provider>
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expression_alias_t<column_t, typename std::decay<alias_provider>::type> as(alias_provider&&) const
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{
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return { *this };
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}
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template<typename T>
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assignment_t<column_t, typename _value_type::template _constraint<T>::type> operator =(T&& t) const
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{
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return { *this, std::forward<T>(t) };
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}
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};
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}
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#endif
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