--- /dev/null
+BEGIN;
+
+INSERT INTO config.upgrade_log('0510'); -- miker
+
+SELECT evergreen.change_db_setting('search_path', ARRAY['evergreen','public','pg_catalog']);
+
+-- Fix function breakage due to short search path
+CREATE OR REPLACE FUNCTION evergreen.force_unicode_normal_form(string TEXT, form TEXT) RETURNS TEXT AS $func$
+use Unicode::Normalize 'normalize';
+return normalize($_[1],$_[0]); # reverse the params
+$func$ LANGUAGE PLPERLU;
+
+CREATE OR REPLACE FUNCTION evergreen.facet_force_nfc() RETURNS TRIGGER AS $$
+BEGIN
+ NEW.value := force_unicode_normal_form(NEW.value,'NFC');
+ RETURN NEW;
+END;
+$$ LANGUAGE PLPGSQL;
+
+DROP TRIGGER facet_force_nfc_tgr ON metabib.facet_entry;
+
+CREATE TRIGGER facet_force_nfc_tgr
+ BEFORE UPDATE OR INSERT ON metabib.facet_entry
+ FOR EACH ROW EXECUTE PROCEDURE evergreen.facet_force_nfc();
+
+DROP FUNCTION IF EXISTS public.force_unicode_normal_form (TEXT,TEXT);
+DROP FUNCTION IF EXISTS public.facet_force_nfc ();
+
+CREATE OR REPLACE FUNCTION evergreen.xml_escape(str TEXT) RETURNS text AS $$
+ SELECT REPLACE(REPLACE(REPLACE($1,
+ '&', '&'),
+ '<', '<'),
+ '>', '>');
+$$ LANGUAGE SQL IMMUTABLE;
+
+CREATE OR REPLACE FUNCTION evergreen.maintain_901 () RETURNS TRIGGER AS $func$
+DECLARE
+ use_id_for_tcn BOOLEAN;
+BEGIN
+ -- Remove any existing 901 fields before we insert the authoritative one
+ NEW.marc := REGEXP_REPLACE(NEW.marc, E'<datafield[^>]*?tag="901".+?</datafield>', '', 'g');
+
+ IF TG_TABLE_SCHEMA = 'biblio' THEN
+ -- Set TCN value to record ID?
+ SELECT enabled FROM config.global_flag INTO use_id_for_tcn
+ WHERE name = 'cat.bib.use_id_for_tcn';
+
+ IF use_id_for_tcn = 't' THEN
+ NEW.tcn_value := NEW.id;
+ END IF;
+
+ NEW.marc := REGEXP_REPLACE(
+ NEW.marc,
+ E'(</(?:[^:]*?:)?record>)',
+ E'<datafield tag="901" ind1=" " ind2=" ">' ||
+ '<subfield code="a">' || evergreen.xml_escape(NEW.tcn_value) || E'</subfield>' ||
+ '<subfield code="b">' || evergreen.xml_escape(NEW.tcn_source) || E'</subfield>' ||
+ '<subfield code="c">' || NEW.id || E'</subfield>' ||
+ '<subfield code="t">' || TG_TABLE_SCHEMA || E'</subfield>' ||
+ CASE WHEN NEW.owner IS NOT NULL THEN '<subfield code="o">' || NEW.owner || E'</subfield>' ELSE '' END ||
+ CASE WHEN NEW.share_depth IS NOT NULL THEN '<subfield code="d">' || NEW.share_depth || E'</subfield>' ELSE '' END ||
+ E'</datafield>\\1'
+ );
+ ELSIF TG_TABLE_SCHEMA = 'authority' THEN
+ NEW.marc := REGEXP_REPLACE(
+ NEW.marc,
+ E'(</(?:[^:]*?:)?record>)',
+ E'<datafield tag="901" ind1=" " ind2=" ">' ||
+ '<subfield code="c">' || NEW.id || E'</subfield>' ||
+ '<subfield code="t">' || TG_TABLE_SCHEMA || E'</subfield>' ||
+ E'</datafield>\\1'
+ );
+ ELSIF TG_TABLE_SCHEMA = 'serial' THEN
+ NEW.marc := REGEXP_REPLACE(
+ NEW.marc,
+ E'(</(?:[^:]*?:)?record>)',
+ E'<datafield tag="901" ind1=" " ind2=" ">' ||
+ '<subfield code="c">' || NEW.id || E'</subfield>' ||
+ '<subfield code="t">' || TG_TABLE_SCHEMA || E'</subfield>' ||
+ '<subfield code="o">' || NEW.owning_lib || E'</subfield>' ||
+ CASE WHEN NEW.record IS NOT NULL THEN '<subfield code="r">' || NEW.record || E'</subfield>' ELSE '' END ||
+ E'</datafield>\\1'
+ );
+ ELSE
+ NEW.marc := REGEXP_REPLACE(
+ NEW.marc,
+ E'(</(?:[^:]*?:)?record>)',
+ E'<datafield tag="901" ind1=" " ind2=" ">' ||
+ '<subfield code="c">' || NEW.id || E'</subfield>' ||
+ '<subfield code="t">' || TG_TABLE_SCHEMA || E'</subfield>' ||
+ E'</datafield>\\1'
+ );
+ END IF;
+
+ RETURN NEW;
+END;
+$func$ LANGUAGE PLPGSQL;
+
+DROP TRIGGER b_maintain_901 ON biblio.record_entry;
+DROP TRIGGER b_maintain_901 ON authority.record_entry;
+DROP TRIGGER b_maintain_901 ON serial.record_entry;
+
+CREATE TRIGGER b_maintain_901 BEFORE INSERT OR UPDATE ON biblio.record_entry FOR EACH ROW EXECUTE PROCEDURE evergreen.maintain_901();
+CREATE TRIGGER b_maintain_901 BEFORE INSERT OR UPDATE ON authority.record_entry FOR EACH ROW EXECUTE PROCEDURE evergreen.maintain_901();
+CREATE TRIGGER b_maintain_901 BEFORE INSERT OR UPDATE ON serial.record_entry FOR EACH ROW EXECUTE PROCEDURE evergreen.maintain_901();
+
+DROP FUNCTION IF EXISTS public.maintain_901 ();
+
+COMMIT;
+