--- /dev/null
+CREATE OR REPLACE FUNCTION asset.cache_copy_visibility () RETURNS TRIGGER as $func$
+DECLARE
+ add_front TEXT;
+ add_back TEXT;
+ add_base_query TEXT;
+ add_peer_query TEXT;
+ remove_query TEXT;
+ do_add BOOLEAN := false;
+ do_remove BOOLEAN := false;
+BEGIN
+ add_base_query := $$
+ SELECT cp.id, cp.circ_lib, cn.record, cn.id AS call_number, cp.location, cp.status
+ FROM asset.copy cp
+ JOIN asset.call_number cn ON (cn.id = cp.call_number)
+ JOIN actor.org_unit a ON (cp.circ_lib = a.id)
+ JOIN asset.copy_location cl ON (cp.location = cl.id)
+ JOIN config.copy_status cs ON (cp.status = cs.id)
+ JOIN biblio.record_entry b ON (cn.record = b.id)
+ WHERE NOT cp.deleted
+ AND NOT cn.deleted
+ AND NOT b.deleted
+ AND cs.opac_visible
+ AND cl.opac_visible
+ AND cp.opac_visible
+ AND a.opac_visible
+ $$;
+ add_peer_query := $$
+ SELECT cp.id, cp.circ_lib, pbcm.peer_record AS record, NULL AS call_number, cp.location, cp.status
+ FROM asset.copy cp
+ JOIN biblio.peer_bib_copy_map pbcm ON (pbcm.target_copy = cp.id)
+ JOIN actor.org_unit a ON (cp.circ_lib = a.id)
+ JOIN asset.copy_location cl ON (cp.location = cl.id)
+ JOIN config.copy_status cs ON (cp.status = cs.id)
+ WHERE NOT cp.deleted
+ AND cs.opac_visible
+ AND cl.opac_visible
+ AND cp.opac_visible
+ AND a.opac_visible
+ $$;
+ add_front := $$
+ INSERT INTO asset.opac_visible_copies (copy_id, circ_lib, record)
+ SELECT id, circ_lib, record FROM (
+ $$;
+ add_back := $$
+ ) AS x
+ $$;
+
+ remove_query := $$ DELETE FROM asset.opac_visible_copies WHERE copy_id IN ( SELECT id FROM asset.copy WHERE $$;
+
+ IF TG_TABLE_NAME = 'peer_bib_copy_map' THEN
+ IF TG_OP = 'INSERT' THEN
+ add_peer_query := add_peer_query || ' AND cp.id = ' || NEW.target_copy || ' AND pbcm.peer_record = ' || NEW.peer_record;
+ EXECUTE add_front || add_peer_query || add_back;
+ RETURN NEW;
+ ELSE
+ remove_query := 'DELETE FROM asset.opac_visible_copies WHERE copy_id = ' || OLD.target_copy || ' AND record = ' || OLD.peer_record || ';';
+ EXECUTE remove_query;
+ RETURN OLD;
+ END IF;
+ END IF;
+
+ IF TG_OP = 'INSERT' THEN
+
+ IF TG_TABLE_NAME IN ('copy', 'unit') THEN
+ add_base_query := add_base_query || ' AND cp.id = ' || NEW.id;
+ EXECUTE add_front || add_base_query || add_back;
+ END IF;
+
+ RETURN NEW;
+
+ END IF;
+
+ -- handle items first, since with circulation activity
+ -- their statuses change frequently
+ IF TG_TABLE_NAME IN ('copy', 'unit') THEN
+
+ IF OLD.location <> NEW.location OR
+ OLD.call_number <> NEW.call_number OR
+ OLD.status <> NEW.status OR
+ OLD.circ_lib <> NEW.circ_lib THEN
+ -- any of these could change visibility, but
+ -- we'll save some queries and not try to calculate
+ -- the change directly
+ do_remove := true;
+ do_add := true;
+ ELSE
+
+ IF OLD.deleted <> NEW.deleted THEN
+ IF NEW.deleted THEN
+ do_remove := true;
+ ELSE
+ do_add := true;
+ END IF;
+ END IF;
+
+ IF OLD.opac_visible <> NEW.opac_visible THEN
+ IF OLD.opac_visible THEN
+ do_remove := true;
+ ELSIF NOT do_remove THEN -- handle edge case where deleted item
+ -- is also marked opac_visible
+ do_add := true;
+ END IF;
+ END IF;
+
+ END IF;
+
+ IF do_remove THEN
+ DELETE FROM asset.opac_visible_copies WHERE copy_id = NEW.id;
+ END IF;
+ IF do_add THEN
+ add_base_query := add_base_query || ' AND cp.id = ' || NEW.id;
+ add_peer_query := add_peer_query || ' AND cp.id = ' || NEW.id;
+ EXECUTE add_front || add_base_query || ' UNION ' || add_peer_query || add_back;
+ END IF;
+
+ RETURN NEW;
+
+ END IF;
+
+ IF TG_TABLE_NAME IN ('call_number', 'record_entry') THEN -- these have a 'deleted' column
+
+ IF OLD.deleted AND NEW.deleted THEN -- do nothing
+
+ RETURN NEW;
+
+ ELSIF NEW.deleted THEN -- remove rows
+
+ IF TG_TABLE_NAME = 'call_number' THEN
+ DELETE FROM asset.opac_visible_copies WHERE copy_id IN (SELECT id FROM asset.copy WHERE call_number = NEW.id);
+ ELSIF TG_TABLE_NAME = 'record_entry' THEN
+ DELETE FROM asset.opac_visible_copies WHERE record = NEW.id;
+ END IF;
+
+ RETURN NEW;
+
+ ELSIF OLD.deleted THEN -- add rows
+
+ IF TG_TABLE_NAME = 'call_number' THEN
+ add_base_query := add_base_query || ' AND cn.id = ' || NEW.id;
+ EXECUTE add_front || add_base_query || add_back;
+ ELSIF TG_TABLE_NAME = 'record_entry' THEN
+ add_base_query := add_base_query || ' AND cn.record = ' || NEW.id;
+ add_peer_query := add_peer_query || ' AND pbcm.peer_record = ' || NEW.id;
+ EXECUTE add_front || add_base_query || ' UNION ' || add_peer_query || add_back;
+ END IF;
+
+ RETURN NEW;
+
+ END IF;
+
+ END IF;
+
+ IF TG_TABLE_NAME = 'call_number' THEN
+
+ IF OLD.record <> NEW.record THEN
+ -- call number is linked to different bib
+ remove_query := remove_query || 'call_number = ' || NEW.id || ');';
+ EXECUTE remove_query;
+ add_base_query := add_base_query || ' AND cn.id = ' || NEW.id;
+ EXECUTE add_front || add_base_query || add_back;
+ END IF;
+
+ RETURN NEW;
+
+ END IF;
+
+ IF TG_TABLE_NAME IN ('record_entry') THEN
+ RETURN NEW; -- don't have 'opac_visible'
+ END IF;
+
+ -- actor.org_unit, asset.copy_location, asset.copy_status
+ IF NEW.opac_visible = OLD.opac_visible THEN -- do nothing
+
+ RETURN NEW;
+
+ ELSIF NEW.opac_visible THEN -- add rows
+
+ IF TG_TABLE_NAME = 'org_unit' THEN
+ add_base_query := add_base_query || ' AND cp.circ_lib = ' || NEW.id;
+ add_peer_query := add_peer_query || ' AND cp.circ_lib = ' || NEW.id;
+ ELSIF TG_TABLE_NAME = 'copy_location' THEN
+ add_base_query := add_base_query || ' AND cp.location = ' || NEW.id;
+ add_peer_query := add_peer_query || ' AND cp.location = ' || NEW.id;
+ ELSIF TG_TABLE_NAME = 'copy_status' THEN
+ add_base_query := add_base_query || ' AND cp.status = ' || NEW.id;
+ add_peer_query := add_peer_query || ' AND cp.status = ' || NEW.id;
+ END IF;
+
+ EXECUTE add_front || add_base_query || ' UNION ' || add_peer_query || add_back;
+
+ ELSE -- delete rows
+
+ IF TG_TABLE_NAME = 'org_unit' THEN
+ remove_query := 'DELETE FROM asset.opac_visible_copies WHERE circ_lib = ' || NEW.id || ';';
+ ELSIF TG_TABLE_NAME = 'copy_location' THEN
+ remove_query := remove_query || 'location = ' || NEW.id || ');';
+ ELSIF TG_TABLE_NAME = 'copy_status' THEN
+ remove_query := remove_query || 'status = ' || NEW.id || ');';
+ END IF;
+
+ EXECUTE remove_query;
+
+ END IF;
+
+ RETURN NEW;
+END;
+$func$ LANGUAGE PLPGSQL;
projects / working / Evergreen.git / commitdiff