mongoc_cursor_t *
_mongoc_cursor_array_clone (const mongoc_cursor_t *cursor)
{
mongoc_cursor_t *clone;
ENTRY;
clone = _mongoc_cursor_clone (cursor);
_mongoc_cursor_array_init (clone);
RETURN (clone);
}
static mongoc_cursor_t *
_mongoc_cursor_array_clone (const mongoc_cursor_t *cursor)
{
mongoc_cursor_array_t *arr;
mongoc_cursor_t *clone_;
ENTRY;
arr = (mongoc_cursor_array_t *)cursor->iface_data;
clone_ = _mongoc_cursor_clone (cursor);
_mongoc_cursor_array_init (clone_, arr->field_name);
RETURN (clone_);
}
mongoc_cursor_t *
mongoc_client_find_databases (mongoc_client_t *client,
bson_error_t *error)
{
bson_t cmd = BSON_INITIALIZER;
mongoc_cursor_t *cursor;
BSON_ASSERT (client);
BSON_APPEND_INT32 (&cmd, "listDatabases", 1);
cursor = _mongoc_cursor_new (client, "admin", MONGOC_QUERY_SLAVE_OK,
0, 0, 0, true, NULL, NULL, NULL, NULL);
_mongoc_cursor_array_init (cursor, &cmd, "databases");
bson_destroy (&cmd);
return cursor;
}
mongoc_cursor_t *
mongoc_database_find_collections (mongoc_database_t *database,
const bson_t *filter,
bson_error_t *error)
{
mongoc_cursor_t *cursor;
mongoc_read_prefs_t *read_prefs;
bson_t cmd = BSON_INITIALIZER;
bson_t child;
bson_error_t lerror;
BSON_ASSERT (database);
BSON_APPEND_INT32 (&cmd, "listCollections", 1);
if (filter) {
BSON_APPEND_DOCUMENT (&cmd, "filter", filter);
BSON_APPEND_DOCUMENT_BEGIN (&cmd, "cursor", &child);
bson_append_document_end (&cmd, &child);
}
read_prefs = mongoc_read_prefs_new (MONGOC_READ_PRIMARY);
cursor = mongoc_database_command (database, MONGOC_QUERY_SLAVE_OK, 0, 0, 0,
&cmd, NULL, read_prefs);
_mongoc_cursor_cursorid_init(cursor);
cursor->limit = 0;
if (_mongoc_cursor_cursorid_prime (cursor)) {
/* intentionally empty */
} else {
if (mongoc_cursor_error (cursor, &lerror)) {
if (lerror.code == MONGOC_ERROR_QUERY_COMMAND_NOT_FOUND) {
/* We are talking to a server that doesn' support listCollections. */
/* clear out the error. */
memset (&lerror, 0, sizeof lerror);
/* try again with using system.namespaces */
mongoc_cursor_destroy (cursor);
cursor = _mongoc_database_find_collections_legacy (
database, filter, error);
} else if (error) {
memcpy (error, &lerror, sizeof *error);
}
} else {
/* TODO: remove this branch for general release. Only relevant for RC */
mongoc_cursor_destroy (cursor);
cursor = mongoc_database_command (database, MONGOC_QUERY_SLAVE_OK, 0, 0, 0,
&cmd, NULL, read_prefs);
_mongoc_cursor_array_init(cursor, "collections");
cursor->limit = 0;
}
}
bson_destroy (&cmd);
mongoc_read_prefs_destroy (read_prefs);
return cursor;
}
