END
$function$;
+
+-- convenience function for handling item barcode collisions in asset_copy_legacy
+
+CREATE OR REPLACE FUNCTION migration_tools.handle_asset_barcode_collisions(migration_schema TEXT) RETURNS VOID AS $function$
+DECLARE
+ x_barcode TEXT;
+ x_id BIGINT;
+ row_count NUMERIC;
+ internal_collision_count NUMERIC := 0;
+ incumbent_collision_count NUMERIC := 0;
+BEGIN
+ FOR x_barcode IN SELECT barcode FROM asset_copy_legacy WHERE x_migrate GROUP BY 1 HAVING COUNT(*) > 1
+ LOOP
+ FOR x_id IN SELECT id FROM asset_copy WHERE barcode = x_barcode
+ LOOP
+ UPDATE asset_copy SET barcode = migration_schema || '_internal_collision_' || id || '_' || barcode WHERE id = x_id;
+ GET DIAGNOSTICS row_count = ROW_COUNT;
+ internal_collision_count := internal_collision_count + row_count;
+ END LOOP;
+ END LOOP;
+ RAISE INFO '% internal collisions', internal_collision_count;
+ FOR x_barcode IN SELECT a.barcode FROM asset.copy a, asset_copy_legacy b WHERE x_migrate AND a.deleted IS FALSE AND a.barcode = b.barcode
+ LOOP
+ FOR x_id IN SELECT id FROM asset_copy_legacy WHERE barcode = x_barcode
+ LOOP
+ UPDATE asset_copy_legacy SET barcode = migration_schema || '_incumbent_collision_' || id || '_' || barcode WHERE id = x_id;
+ GET DIAGNOSTICS row_count = ROW_COUNT;
+ incumbent_collision_count := incumbent_collision_count + row_count;
+ END LOOP;
+ END LOOP;
+ RAISE INFO '% incumbent collisions', incumbent_collision_count;
+END
+$function$ LANGUAGE plpgsql;