cursor.h

#ifndef DBALLE_CURSOR_H
#define DBALLE_CURSOR_H
 
#include <dballe/fwd.h>
#include <dballe/values.h>
#include <memory>
#include <vector>
#include <wreport/var.h>
 
namespace dballe {

class Cursor : public std::enable_shared_from_this<Cursor>
{
public:
    virtual ~Cursor();

    virtual bool has_value() const = 0;

    virtual int remaining() const = 0;

    virtual bool next() = 0;

    virtual void discard() = 0;

    virtual DBStation get_station() const = 0;
};

class CursorStation : public Cursor
{
public:
    virtual DBValues get_values() const = 0;
};

class CursorStationData : public Cursor
{
public:
    virtual wreport::Varcode get_varcode() const = 0;

    virtual wreport::Var get_var() const = 0;
};

class CursorData : public Cursor
{
public:
    virtual wreport::Varcode get_varcode() const = 0;

    virtual wreport::Var get_var() const = 0;

    virtual Level get_level() const = 0;

    virtual Trange get_trange() const = 0;

    virtual Datetime get_datetime() const = 0;
};

class CursorSummary : public Cursor
{
public:
    virtual Level get_level() const = 0;

    virtual Trange get_trange() const = 0;

    virtual wreport::Varcode get_varcode() const = 0;

    virtual DatetimeRange get_datetimerange() const = 0;

    virtual size_t get_count() const = 0;
};

class CursorMessage : public Cursor
{
public:
    virtual std::shared_ptr<Message> get_message() const = 0;
};
 
} // namespace dballe
#endif