+++ /dev/null
-
--- pass it the biblionumber, the position of the character to start in the leader starting at 0
--- and the text to replace, single characer or multiple
-DROP FUNCTION IF EXISTS m_update_leader;
-DELIMITER $
-CREATE FUNCTION
- m_update_leader(bnumber INTEGER, ldr_position SMALLINT, new_value TEXT)
- RETURNS BOOLEAN
- DETERMINISTIC
- BEGIN
- DECLARE ldr TEXT COLLATE utf8mb4_unicode_ci DEFAULT NULL;
- DECLARE new_value_length SMALLINT DEFAULT 1;
- SET ldr_position = ldr_position + 1;
- SET new_value_length = LENGTH(new_value);
-
- SELECT ExtractValue(metadata, '//leader') INTO ldr FROM biblio_metadata WHERE biblionumber = bnumber;
- SET ldr = INSERT(ldr,ldr_position,new_value_length,new_value);
- SET ldr = CONCAT('<leader>',ldr,'</leader>');
-
- UPDATE biblio_metadata SET metadata = UpdateXML(metadata, '//leader', ldr) where biblionumber = bnumber;
- RETURN TRUE;
-
- END
-$
-DELIMITER ;
-
-