/**
* gda_data_access_wrapper_set_mapping:
* @wrapper: a #GdaDataAccessWrapper object
* @mapping: (allow-none) (array length=mapping_size): an array of #gint which represents the mapping between @wrapper's columns
* and the columns of the wrapped data model
* @mapping_size: the size of @mapping.
*
* @wrapper will report as many columns as @mapping_size, and for each value at position 'i' in @mapping,
* @wrapper will report the 'i'th column, mapped to the wrapped data model column at position mapping[i].
* For example if mapping is {3, 4, 0}, then @wrapper will report 3 columns, respectively mapped to the 4th,
* 5th and 1st columns of the wrapped data model (as column numbers start at 0).
*
* If @mapping is %NULL, then no mapping is done and @wrapper's columns will be the same as the wrapped
* data model.
*
* If a column in @mapping does not exist in the wrapped data model, then it is simply ignored (no error
* reported).
*
* Please note that if @wrapper has already been used and if the wrapped data model offers a cursor forward
* access mode, then this method will return %FALSE and no action will be done.
*
* If the mapping is applied, then any existing iterator will be invalid, and @wrapper is reset as if it
* had just been created.
*
* Returns: %TRUE if the mapping actually changed
*
* Since: 5.2
*/
gboolean
gda_data_access_wrapper_set_mapping (GdaDataAccessWrapper *wrapper, const gint *mapping, gint mapping_size)
{
g_return_val_if_fail (GDA_IS_DATA_ACCESS_WRAPPER (wrapper), FALSE);
if ((! (wrapper->priv->model_access_flags & GDA_DATA_MODEL_ACCESS_CURSOR_BACKWARD)) &&
(wrapper->priv->iter_row >= 0)) {
/* error */
return FALSE;
}
clear_internal_state (wrapper);
if (mapping) {
/* define mapping */
wrapper->priv->rows_mapping = g_new (gint, mapping_size);
memcpy (wrapper->priv->rows_mapping, mapping, mapping_size * sizeof (gint));
wrapper->priv->nb_cols = mapping_size;
}
else {
if (wrapper->priv->rows_mapping) {
g_free (wrapper->priv->rows_mapping);
wrapper->priv->rows_mapping = NULL;
}
}
compute_columns (wrapper);
gda_data_model_reset ((GdaDataModel*) wrapper);
return TRUE;
}
static void
action_executed_holder_changed_cb (G_GNUC_UNUSED GdaSet *params, G_GNUC_UNUSED GdaHolder *holder,
ActionExecutedData *aed)
{
if (! aed->formgrid->priv->autoupdate || ! aed->formgrid->priv->autoupdate_possible)
return;
GError *error = NULL;
gda_data_model_freeze (aed->model);
if (!t_connection_rerun_select (aed->tcnc, aed->model, &error)) {
GtkWidget *toplevel;
toplevel = gtk_widget_get_toplevel (GTK_WIDGET (aed->formgrid));
ui_show_error (GTK_WINDOW (toplevel),
_("Error executing query:\n%s"), error->message ? error->message : _("No detail"));
g_clear_error (&error);
gda_data_model_thaw (aed->model);
}
else {
gda_data_model_thaw (aed->model);
gda_data_model_reset (aed->model);
}
}
static void
model_reset_cb (G_GNUC_UNUSED GdaDataModel *mod, GdaDataAccessWrapper *model)
{
gda_data_model_reset ((GdaDataModel*) model);
}
