query.h

#ifndef DBALLE_QUERY_H
#define DBALLE_QUERY_H
 
#include <dballe/fwd.h>
#include <dballe/types.h>
#include <functional>
#include <memory>
#include <string>
#include <wreport/var.h>
 
namespace dballe {
 
static constexpr int REQUIRED_MISSING_INT = MISSING_INT - 1;

class Query
{
public:
    Query() {}
    Query(const Query&) = default;
    Query(Query&&)      = default;
    virtual ~Query() {}
 
    Query& operator=(const Query& o) = default;
    Query& operator=(Query&& o)      = default;

    virtual DatetimeRange get_datetimerange() const = 0;

    virtual void set_datetimerange(const DatetimeRange& dt) = 0;

    virtual LatRange get_latrange() const = 0;

    virtual void set_latrange(const LatRange& latrange) = 0;

    virtual LonRange get_lonrange() const = 0;

    virtual void set_lonrange(const LonRange& lonrange) = 0;

    virtual Level get_level() const = 0;

    virtual void set_level(const Level& level) = 0;

    virtual Trange get_trange() const = 0;

    virtual void set_trange(const Trange& trange) = 0;

    virtual void clear() = 0;

    virtual bool is_subquery(const Query& other) const = 0;
 
#if 0
    virtual void foreach_key(std::function<void(const char*, wreport::Var&&)> dest) const = 0;
#endif

    virtual void print(FILE* out) const = 0;

    virtual std::unique_ptr<Query> clone() const = 0;

    static std::unique_ptr<Query> create();

    virtual bool empty() const = 0;
};
 
} // namespace dballe
#endif