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Modify select.h to support connection_pool and pool_connection

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This commit is contained in:
Frank Park 2017-04-11 01:09:51 -04:00
parent 7866749a2a
commit ecd6a6aeb8
1 changed files with 49 additions and 6 deletions
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55
include/sqlpp11/select.h
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@ -45,6 +45,8 @@
#include <sqlpp11/expression.h>
#include <sqlpp11/wrong.h>
#include <sqlpp11/type_traits.h>
namespace sqlpp
{
struct select_name_t
@ -95,18 +97,59 @@ namespace sqlpp
return blank_select_t<void>().columns(columns...);
}
template <typename Database>
blank_select_t<Database> dynamic_select(const Database&)
template <typename... Args>
blank_select_t<void> dynamic_select(Args& ...)
{
static_assert(std::is_base_of<connection, Database>::value, "Invalid database parameter");
static_assert(false, "Invalid database parameter");
return {};
}
template <typename Database, typename... Columns>
auto dynamic_select(const Database&, Columns... columns) -> decltype(blank_select_t<Database>().columns(columns...))
template <template <typename, typename, typename, typename> typename Pool_connection,
typename Connection_config, typename Connection_validator, typename Connection, typename Connection_pool,
typename std::enable_if<std::is_class<Connection>::value, int>::type = 0>
blank_select_t<Connection> dynamic_select(const Pool_connection<Connection_config, Connection_validator, Connection, Connection_pool>&)
{
return {};
}
template <template <typename, typename, typename> typename Connection_pool,
typename Connection_config, typename Connection_validator, typename Connection,
typename std::enable_if<std::is_class<Connection>::value, int>::type = 0>
blank_select_t<Connection> dynamic_select(const Connection_pool<Connection_config, Connection_validator, Connection>&)
{
return {};
}
template <typename Database>
blank_select_t<Database> dynamic_select(const Database&, typename std::enable_if<std::is_base_of<connection, Database>::value, int>::type = 0)
{
return {};
}
template <template <typename, typename, typename, typename> typename Pool_connection, typename... Columns,
typename Connection_config, typename Connection_validator, typename Connection, typename Connection_pool,
typename std::enable_if<std::is_class<Connection>::value, int>::type = 0>
auto dynamic_select(const Pool_connection<Connection_config, Connection_validator, Connection, Connection_pool>&, Columns... columns)
-> decltype(blank_select_t<Connection>().columns(columns...))
{
static_assert(std::is_base_of<connection, Database>::value, "Invalid database parameter");
return blank_select_t<Database>().columns(columns...);
}
template <template <typename, typename, typename> typename Connection_pool, typename... Columns,
typename Connection_config, typename Connection_validator, typename Connection,
typename std::enable_if<std::is_class<Connection>::value, int>::type = 0>
auto dynamic_select(const Connection_pool<Connection_config, Connection_validator, Connection>&, Columns... columns)
-> decltype(blank_select_t<Connection>().columns(columns...))
{
return {};
}
template <typename Connection, typename... Columns>
auto dynamic_select(const Connection&, Columns... columns,
typename std::enable_if<std::is_base_of<connection, Connection>::value, int>::type = 0)
-> decltype(blank_select_t<Connection>().columns(columns...))
{
return {};
}
}
#endif