meta.hpp

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// Andrew Naplavkov
 
#ifndef BOAT_DB_META_HPP
#define BOAT_DB_META_HPP
 
#include <cstdint>
#include <ranges>
#include <string>
#include <vector>
 
namespace boat::db {
 
struct source {
    std::string source_name;
    std::string address;
};
 
struct layer {
    std::string schema_name;
    std::string table_name;
    std::string column_name;
    bool raster;
 
    friend bool operator==(layer const&, layer const&) = default;
};
 
struct column {
    std::string kind;
    std::string column_name;
    std::string type_name;  
    int length;
    int srid;
    int epsg;
    std::string wkt;
    std::string proj4;
 
    bool has_coord_sys() const
    {
        return epsg > 0 || !wkt.empty() || !proj4.empty();
    }
};
 
struct index_key {
    std::string schema_name;
    std::string index_name;
    std::string column_name;
    bool descending;
    bool partial;
    bool primary;
    bool unique;
    int ordinal;  
};
 
struct table {
    std::string dbms;  
    std::string schema_name;
    std::string table_name;
    std::vector<column> columns;
    std::vector<index_key> index_keys;
 
    auto indices() const
    {
        return index_keys | std::views::chunk_by([](auto& lhs, auto& rhs) {
                   return lhs.ordinal < rhs.ordinal;
               });
    }
};

struct bbox {
    std::vector<std::string> select_list;
    std::string layer_column;
    double xmin;
    double ymin;
    double xmax;
    double ymax;
    int limit;
};
 
struct order_key {
    std::string column_name;
    bool descending;
};

struct page {
    std::vector<std::string> select_list;
    std::vector<order_key> order_by;
    size_t offset;
    int limit;
};
 
struct band {
    std::string color_name;  
    std::string type_name;   
};
 
struct raster {
    std::string schema_name;
    std::string table_name;
    std::string column_name;
    std::vector<band> bands;
    int width;
    int height;
    double xorig;
    double yorig;
    double xscale;
    double yscale;
    double xskew;
    double yskew;
    int srid;
    int epsg;
    std::string wkt;
    std::string proj4;
};
 
struct rect {
    int x;
    int y;
    int width;
    int height;
};
 
}  // namespace boat::db
 
#endif  // BOAT_DB_META_HPP