query.hpp

Go to the documentation of this file.

#ifndef TIP_DB_PG_QUERY_HPP_
#define TIP_DB_PG_QUERY_HPP_

#include <tip/db/pg/common.hpp>

#include <memory>
#include <functional>
#include <boost/system/error_code.hpp>

namespace tip {
namespace db {
namespace pg {

class query {
public:
    query(dbalias const& alias, std::string const& expression);

    template < typename ... T >
    query(dbalias const& alias, std::string const& expression,
            T const& ... params);

    query(transaction_ptr tran, std::string const& expression);

    template < typename ... T >
    query(transaction_ptr tran, std::string const& expression,
            T const& ... params);

    template < typename ... T >
    query&
    bind(T const& ... params);

    query&
    bind();
    void
    run_async(query_result_callback const& result, error_callback const& error) const;
    void
    operator()(query_result_callback const& result, error_callback const& error) const;
private:
    typedef std::vector<byte> params_buffer;
    struct impl;
    typedef std::shared_ptr<impl> pimpl;

    type_oid_sequence&
    param_types();
    params_buffer&
    buffer();
    mutable pimpl pimpl_;
private:
    template < typename ... T >
    static pimpl
    create_impl(dbalias const&, std::string const& expression,
            T const& ... params);

    static pimpl
    create_impl(dbalias const&, std::string const& expression,
            type_oid_sequence&& param_types, params_buffer&& params);

    template < typename ... T >
    static pimpl
    create_impl(transaction_ptr, std::string const& expression,
            T const& ... params);

    static pimpl
    create_impl(transaction_ptr, std::string const& expression,
            type_oid_sequence&& param_types, params_buffer&& params);

};

}  // namespace pg
}  // namespace db
}  // namespace tip

#include <tip/db/pg/query.inl>

#endif /* TIP_DB_PG_QUERY_HPP_ */