/*

 * Copyright (C) 2022, Red Hat, Inc

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2.1 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the

 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

 * Boston, MA  02110-1301, USA.

 *

 * Author: Carlos Garnacho <carlosg@gnome.org>

 */

#include "config.h"

#include "tracker-deserializer-rdf.h"

#include "tracker-private.h"

static gchar *col_names[] = {

  "subject",

  "predicate",

  "object",

  "graph",

};

G_STATIC_ASSERT (G_N_ELEMENTS (col_names) == TRACKER_RDF_N_COLS);

enum {

  PROP_0,

  PROP_HAS_GRAPH,

  N_PROPS

};

static GParamSpec *props[N_PROPS];

typedef struct _TrackerDeserializerRdfPrivate TrackerDeserializerRdfPrivate;

struct _TrackerDeserializerRdfPrivate

{

  gboolean has_graph;

};

G_DEFINE_ABSTRACT_TYPE_WITH_PRIVATE (TrackerDeserializerRdf, tracker_deserializer_rdf,

                                     TRACKER_TYPE_DESERIALIZER)

static void

tracker_deserializer_rdf_set_property (GObject      *object,

                                       guint         prop_id,

                                       const GValue *value,

                                       GParamSpec   *pspec)

{

  TrackerDeserializerRdf *serializer_rdf = TRACKER_DESERIALIZER_RDF (object);

  TrackerDeserializerRdfPrivate *priv =

    tracker_deserializer_rdf_get_instance_private (serializer_rdf);

  switch (prop_id) {

  case PROP_HAS_GRAPH:

    priv->has_graph = g_value_get_boolean (value);

    break;

  default:

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);

    break;

  }

}

static void

tracker_deserializer_rdf_get_property (GObject    *object,

                                       guint       prop_id,

                                       GValue     *value,

                                       GParamSpec *pspec)

{

  TrackerDeserializerRdf *serializer_rdf = TRACKER_DESERIALIZER_RDF (object);

  TrackerDeserializerRdfPrivate *priv =

    tracker_deserializer_rdf_get_instance_private (serializer_rdf);

  switch (prop_id) {

  case PROP_HAS_GRAPH:

    g_value_set_boolean (value, priv->has_graph);

    break;

  default:

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);

    break;

  }

}

static const gchar *

tracker_deserializer_rdf_get_variable_name (TrackerSparqlCursor *cursor,

                                            gint                 column)

{

  if (column >= tracker_sparql_cursor_get_n_columns (cursor))

    return NULL;

  g_assert (column < TRACKER_RDF_N_COLS);

  return col_names[column];

}

static gint

tracker_deserializer_rdf_get_n_columns (TrackerSparqlCursor *cursor)

{

  TrackerDeserializerRdf *deserializer_rdf =

    TRACKER_DESERIALIZER_RDF (cursor);

  TrackerDeserializerRdfPrivate *priv =

    tracker_deserializer_rdf_get_instance_private (deserializer_rdf);

  return (priv->has_graph) ? TRACKER_RDF_N_COLS : TRACKER_RDF_N_COLS - 1;

}

static void

tracker_deserializer_rdf_class_init (TrackerDeserializerRdfClass *klass)

{

  GObjectClass *object_class = G_OBJECT_CLASS (klass);

  TrackerSparqlCursorClass *cursor_class = TRACKER_SPARQL_CURSOR_CLASS (klass);

  object_class->set_property = tracker_deserializer_rdf_set_property;

  object_class->get_property = tracker_deserializer_rdf_get_property;

  cursor_class->get_variable_name = tracker_deserializer_rdf_get_variable_name;

  cursor_class->get_n_columns = tracker_deserializer_rdf_get_n_columns;

  props[PROP_HAS_GRAPH] =

    g_param_spec_boolean ("has-graph",

                          "Has graph",

                          "Has graph",

                          FALSE,

                          G_PARAM_CONSTRUCT_ONLY |

                          G_PARAM_STATIC_STRINGS |

                          G_PARAM_READABLE |

                          G_PARAM_WRITABLE);

  g_object_class_install_properties (object_class, N_PROPS, props);

}

static void

tracker_deserializer_rdf_init (TrackerDeserializerRdf *deserializer_rdf)

{

}