ResultSet.h

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// Copyright 2024 libsese
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
 
#pragma once
#include <sese/db/Config.h>
 
#include <string>
#include <cstring>
#include <sese/util/DateTime.h>
#include <optional>
 
namespace sese::db {
 
    class  ResultSet {
    public:
        using Ptr = std::unique_ptr<ResultSet>;
 
        virtual ~ResultSet() noexcept = default;
        virtual void reset() noexcept = 0;
        [[nodiscard]] virtual bool next() noexcept = 0;
        // [[nodiscard]] virtual const char *getColumnByIndex(size_t index) const noexcept = 0;
        [[nodiscard]] virtual size_t getColumns() const noexcept = 0;
 
        [[nodiscard]] virtual int32_t getInteger(size_t index) const noexcept = 0;
        [[nodiscard]] virtual int64_t getLong(size_t index) const noexcept = 0;
        [[nodiscard]] virtual std::string_view getString(size_t index) const noexcept = 0;
        [[nodiscard]] virtual double getDouble(size_t index) const noexcept = 0;
        [[nodiscard]] virtual float getFloat(size_t index) const noexcept = 0;
        [[nodiscard]] virtual std::optional<sese::DateTime> getDateTime(size_t index) const noexcept = 0;
        [[nodiscard]] virtual bool isNull(size_t index) const noexcept = 0;
    };
}