gdalalg_vector_limit.h

/******************************************************************************
 *
 * Project:  GDAL
 * Purpose:  "limit" step of "vector pipeline"
 * Author:   Dan Baston
 *
 ******************************************************************************
 * Copyright (c) 2025, ISciences LLC
 *
 * SPDX-License-Identifier: MIT
 ****************************************************************************/
 
#ifndef GDALALG_VECTOR_LIMIT_INCLUDED
#define GDALALG_VECTOR_LIMIT_INCLUDED
 
#include "gdalalg_vector_pipeline.h"

 
/************************************************************************/
/*                    GDALVectorLimitAlgorithm                         */
/************************************************************************/
 
class GDALVectorLimitAlgorithm /* non final */
    : public GDALVectorPipelineStepAlgorithm
{
  public:
    static constexpr const char *NAME = "limit";
    static constexpr const char *DESCRIPTION =
        "Truncate a vector dataset to no more than a specified number of "
        "features.";
    static constexpr const char *HELP_URL =
        "/programs/gdal_vector_pipeline.html";
 
    explicit GDALVectorLimitAlgorithm(bool standaloneStep = false);
 
  private:
    bool RunStep(GDALPipelineStepRunContext &ctxt) override;
 
    std::string m_activeLayer{};
    int m_featureLimit{};
};

 
#endif /* GDALALG_VECTOR_LIMIT_INCLUDED */