sqlpp11/include/sqlpp11/policy_update.h at postgresql_remove_returning · rbock/sqlpp11 · GitHub

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#pragma once

* 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.

#include <sqlpp11/wrong.h>

namespace sqlpp

{

template <typename Needle, typename Replacement>

struct policy_update_impl

{

template <typename T>

using _policy_t = typename std::conditional<std::is_same<Needle, T>::value, Replacement, T>::type;

};

template <typename T, typename Needle, typename Replacement>

using policy_update_t = typename policy_update_impl<Needle, Replacement>::template _policy_t<T>;

template <typename Original, typename Needle, typename Replacement>

struct update_policies_impl

{

using type = typename Original::template _policy_update_t<Needle, Replacement>;

};

template <typename Original, typename Needle, typename Replacement>

using update_policies_t = typename update_policies_impl<Original, Needle, Replacement>::type;

template <typename Policies, typename Needle, typename Replacement>

using new_statement = typename Policies::template _new_statement_t<Needle, Replacement>;

template <typename Check, typename Policies, typename Needle, typename Replacement>

struct new_statement_impl

{

using type = Check;

};

template <typename Policies, typename Needle, typename Replacement>

struct new_statement_impl<consistent_t, Policies, Needle, Replacement>

{

using type = typename Policies::template _new_statement_t<Needle, Replacement>;

};

template <typename Check, typename Policies, typename Needle, typename Replacement>

using new_statement_t = typename new_statement_impl<Check, Policies, Needle, Replacement>::type;

} // namespace sqlpp

sqlpp11/include/sqlpp11/policy_update.h at postgresql_remove_returning · rbock/sqlpp11 · GitHub

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