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Added serializable_list (which is a noop for non-dynamic cases)

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Roland Bock 2013-11-15 09:56:46 +01:00
parent 85f2a97649
commit d3e438606c
1 changed files with 108 additions and 0 deletions
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108
include/sqlpp11/detail/serializable_list.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_SERIALIZABLE_LIST_H
#define SQLPP_SERIALIZABLE_LIST_H
#include <vector>
#include <sqlpp11/detail/serializable.h>
namespace sqlpp
{
namespace detail
{
template<typename Db>
struct serializable_list
{
std::vector<detail::serializable_t<Db>> _serializables;
std::size_t size() const
{
return _serializables.size();
}
bool empty() const
{
return _serializables.empty();
}
template<typename Expr>
void emplace_back(Expr&& expr)
{
_serializables.emplace_back(std::forward<Expr>(expr));
}
void serialize(std::ostream& os, Db& db, bool first) const
{
for (const auto entry : _serializables)
{
if (not first)
os << ',';
entry.serialize(os, db);
first = false;
}
}
void serialize(std::ostream& os, Db& db, const std::string& separator, bool first) const
{
for (const auto entry : _serializables)
{
if (not first)
os << separator;
entry.serialize(os, db);
first = false;
}
}
};
template<>
struct serializable_list<void>
{
template<typename T>
void emplace_back(const T&) {}
constexpr std::size_t size() const
{
return 0;
}
constexpr bool empty() const
{
return true;
}
template<typename Db>
void serialize(std::ostream&, Db&, bool) const
{
}
};
}
}
#endif