result_iteration_helper.h

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// SPDX-License-Identifier: BSD-3-Clause

/*
 * Copyright (c) 2020, Bjarne von Horn
 * 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.
 * * Neither the name of the copyright holder nor the names of its contributors
 *   may be used to endorse or promote products derived from this software
 *   without specific prior written permission.
 *
 * 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 BJARNE VON HORN 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,
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 */
#pragma once

#include <warehouse_ros/query_results.h>
#include <warehouse_ros_sqlite/utils.h>
#include <warehouse_ros_sqlite/warehouse_ros_sqlite_export.h>

namespace warehouse_ros_sqlite
{
class WAREHOUSE_ROS_SQLITE_EXPORT ResultIteratorHelper : public warehouse_ros::ResultIteratorHelper
{
  sqlite3_stmt_ptr stmt_;
  std::vector<std::pair<std::string, int>> metadata_cols_;
  void initMetadataCols();

public:
  ResultIteratorHelper() = default;
  ResultIteratorHelper(sqlite3_stmt_ptr stmt) : stmt_(std::move(stmt))
  {
    initMetadataCols();
  }
  bool next() override;
  bool hasData() const override;
  warehouse_ros::Metadata::ConstPtr metadata() const override;
  std::string message() const override;
};

}  // namespace warehouse_ros_sqlite