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Added interpreters for a bunch of functions and table aliases

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rbock
2014-01-15 19:42:14 +01:00
parent 277ce51fb5
commit afcc62fc75
16 changed files with 266 additions and 174 deletions
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include/sqlpp11/table_alias.h Normal file
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/*
* Copyright (c) 2013, Roland Bock
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SQLPP_TABLE_ALIAS_H
#define SQLPP_TABLE_ALIAS_H
#include <string>
#include <ostream>
#include <sqlpp11/column.h>
#include <sqlpp11/alias.h>
#include <sqlpp11/detail/set.h>
#include <sqlpp11/type_traits.h>
namespace sqlpp
{
struct table_alias_base_t {};
template<typename AliasProvider, typename Table, typename... ColumnSpec>
struct table_alias_t: public table_alias_base_t, public ColumnSpec::_name_t::template _member_t<column_t<AliasProvider, ColumnSpec>>...
{
//FIXME: Need to add join functionality
using _is_table = std::true_type;
using _table_set = detail::set<table_alias_t>;
struct _value_type: Table::_value_type
{
using _is_expression = std::false_type;
using _is_named_expression = copy_type_trait<Table, is_value_t>;
using _is_alias = std::true_type;
};
using _name_t = typename AliasProvider::_name_t;
using _all_of_t = std::tuple<column_t<AliasProvider, ColumnSpec>...>;
table_alias_t(Table table):
_table(table)
{}
template<typename Db>
void serialize(std::ostream& os, Db& db) const
{
os << "("; _table.serialize(os, db); os << ") AS " << _name_t::_get_name();
}
Table _table;
};
template<typename Context, typename X>
struct interpreter_t<Context, X, typename std::enable_if<std::is_base_of<table_alias_base_t, X>::value, void>::type>
{
using T = X;
static Context& _(const T& t, Context& context)
{
context << "(";
interpret(t._table, context);
context << ") AS " << T::_name_t::_get_name();
return context;
}
};
}
#endif