/* -*- mode: C; c-basic-offset: 4; indent-tabs-mode: nil; -*- */

#ifndef DDM_COMPILATION
#ifndef DDM_INSIDE_DDM_H
#error "Do not include this file directly, include ddm.h instead"
#endif /* DDM_INSIDE_DDM_H */
#endif /* DDM_COMPILATION */

#ifndef __DDM_DATA_FETCH_H__
#define __DDM_DATA_FETCH_H__

#include <ddm/ddm-data-resource.h>

G_BEGIN_DECLS

typedef struct _DDMDataFetchIter DDMDataFetchIter;

struct _DDMDataFetchIter
{
    DDMDataResource *resource;
    DDMDataFetch *fetch;
    int property_index;
    DDMDataProperty *next_property;
    DDMDataFetch *next_children;
    GSList *default_properties;
};

DDMDataFetch *ddm_data_fetch_ref           (DDMDataFetch      *fetch);
void          ddm_data_fetch_unref         (DDMDataFetch      *fetch);
DDMDataFetch *ddm_data_fetch_from_string   (const char        *str);
DDMDataFetch *ddm_data_fetch_merge         (DDMDataFetch      *fetch,
                                            DDMDataFetch      *other);
DDMDataFetch *ddm_data_fetch_subtract      (DDMDataFetch      *fetch,
                                            DDMDataFetch      *other);
char *        ddm_data_fetch_to_string     (DDMDataFetch      *fetch);
void          ddm_data_fetch_iter_init     (DDMDataFetchIter  *iter,
                                            DDMDataResource   *resource,
                                            DDMDataFetch      *fetch);
void          ddm_data_fetch_iter_clear    (DDMDataFetchIter  *iter);
gboolean      ddm_data_fetch_iter_has_next (DDMDataFetchIter  *iter);
void          ddm_data_fetch_iter_next     (DDMDataFetchIter  *iter,
                                            DDMDataProperty  **property,
                                            DDMDataFetch     **children);


G_END_DECLS

#endif /* __DDM_DATA_FETCH_H__ */