/**
* gda_data_model_array_copy_model:
* @src: a #GdaDataModel to copy data from
* @error: a place to store errors, or %NULL
*
* Makes a copy of @src into a new #GdaDataModelArray object
*
* Returns: (transfer full) (allow-none): a new data model, or %NULL if an error occurred
*/
GdaDataModelArray *
gda_data_model_array_copy_model (GdaDataModel *src, GError **error)
{
GdaDataModel *model;
gint nbfields, i;
g_return_val_if_fail (GDA_IS_DATA_MODEL (src), NULL);
nbfields = gda_data_model_get_n_columns (src);
model = gda_data_model_array_new (nbfields);
if (g_object_get_data (G_OBJECT (src), "name"))
g_object_set_data_full (G_OBJECT (model), "name", g_strdup (g_object_get_data (G_OBJECT (src), "name")), g_free);
if (g_object_get_data (G_OBJECT (src), "descr"))
g_object_set_data_full (G_OBJECT (model), "descr", g_strdup (g_object_get_data (G_OBJECT (src), "descr")), g_free);
for (i = 0; i < nbfields; i++) {
GdaColumn *copycol, *srccol;
gchar *colid;
srccol = gda_data_model_describe_column (src, i);
copycol = gda_data_model_describe_column (model, i);
g_object_get (G_OBJECT (srccol), "id", &colid, NULL);
g_object_set (G_OBJECT (copycol), "id", colid, NULL);
g_free (colid);
gda_column_set_description (copycol, gda_column_get_description (srccol));
gda_column_set_name (copycol, gda_column_get_name (srccol));
gda_column_set_dbms_type (copycol, gda_column_get_dbms_type (srccol));
gda_column_set_g_type (copycol, gda_column_get_g_type (srccol));
gda_column_set_position (copycol, gda_column_get_position (srccol));
gda_column_set_allow_null (copycol, gda_column_get_allow_null (srccol));
}
if (! gda_data_model_import_from_model (model, src, FALSE, NULL, error)) {
g_object_unref (model);
model = NULL;
}
/*else
gda_data_model_dump (model, stdout);*/
return (GdaDataModelArray*) model;
}
/**
* gda_column_set_name:
* @column: a #GdaColumn.
* @name: the new name of @column.
*
* Sets the name of @column to @name.
*/
void
gda_column_set_name (GdaColumn *column, const gchar *name)
{
gchar *old_name = NULL;
GValue *value = NULL;
g_return_if_fail (GDA_IS_COLUMN (column));
old_name = (gchar *) gda_column_get_name (column);
if (old_name)
old_name = g_strdup (old_name);
if (name)
g_value_set_string ((value = gda_value_new (G_TYPE_STRING)), name);
gda_column_set_attribute_static (column, GDA_ATTRIBUTE_NAME, value);
if (value)
gda_value_free (value);
g_signal_emit (G_OBJECT (column),
gda_column_signals[NAME_CHANGED],
0, old_name);
g_free (old_name);
}
/**
* gda_data_model_array_copy_model_ext:
* @src: a #GdaDataModel to copy data from
* @ncols: size of @cols
* @cols: (array length=ncols): array of @src's columns to copy into the new array, not %NULL
* @error: a place to store errors, or %NULL
*
* Like gda_data_model_array_copy_model(), makes a copy of @src, but copies only some
* columns.
*
* Returns: (transfer full) (allow-none): a new data model, or %NULL if an error occurred
*
* Since: 5.2.0
*/
GdaDataModelArray *
gda_data_model_array_copy_model_ext (GdaDataModel *src, gint ncols, gint *cols, GError **error)
{
GdaDataModel *model;
gint nbfields, i;
g_return_val_if_fail (GDA_IS_DATA_MODEL (src), NULL);
g_return_val_if_fail (cols, NULL);
g_return_val_if_fail (ncols > 0, NULL);
/* check columns' validity */
nbfields = gda_data_model_get_n_columns (src);
for (i = 0; i < ncols; i++) {
if ((cols[i] < 0) || (cols[i] >= nbfields)) {
g_set_error (error, GDA_DATA_MODEL_ERROR,
GDA_DATA_MODEL_COLUMN_OUT_OF_RANGE_ERROR,
_("Column %d out of range (0-%d)"), cols[i], nbfields - 1);
return NULL;
}
}
/* initialize new model */
model = gda_data_model_array_new (ncols);
if (g_object_get_data (G_OBJECT (src), "name"))
g_object_set_data_full (G_OBJECT (model), "name", g_strdup (g_object_get_data (G_OBJECT (src), "name")), g_free);
if (g_object_get_data (G_OBJECT (src), "descr"))
g_object_set_data_full (G_OBJECT (model), "descr", g_strdup (g_object_get_data (G_OBJECT (src), "descr")), g_free);
/* map new columns */
GHashTable *hash;
hash = g_hash_table_new_full (g_int_hash, g_int_equal, g_free, NULL);
for (i = 0; i < ncols; i++) {
gint *ptr;
ptr = g_new (gint, 1);
*ptr = i;
g_hash_table_insert (hash, ptr, GINT_TO_POINTER (cols[i]));
GdaColumn *copycol, *srccol;
gchar *colid;
srccol = gda_data_model_describe_column (src, cols[i]);
copycol = gda_data_model_describe_column (model, i);
g_object_get (G_OBJECT (srccol), "id", &colid, NULL);
g_object_set (G_OBJECT (copycol), "id", colid, NULL);
g_free (colid);
gda_column_set_description (copycol, gda_column_get_description (srccol));
gda_column_set_name (copycol, gda_column_get_name (srccol));
gda_column_set_dbms_type (copycol, gda_column_get_dbms_type (srccol));
gda_column_set_g_type (copycol, gda_column_get_g_type (srccol));
gda_column_set_position (copycol, gda_column_get_position (srccol));
gda_column_set_allow_null (copycol, gda_column_get_allow_null (srccol));
}
if (! gda_data_model_import_from_model (model, src, FALSE, hash, error)) {
g_hash_table_destroy (hash);
g_object_unref (model);
model = NULL;
}
/*else
gda_data_model_dump (model, stdout);*/
g_hash_table_destroy (hash);
return (GdaDataModelArray*) model;
}