From 2020fa0c3638c5ddb08bce54e3a0ffffb42bb82f Mon Sep 17 00:00:00 2001 From: Jason Etheridge Date: Sun, 25 Feb 2018 23:27:10 -0500 Subject: [PATCH] migration_tools.handle_not_migrate Signed-off-by: Jason Etheridge --- sql/base/base.sql | 41 +++++++++++++++++++++++++++++++++++++++++ 1 files changed, 41 insertions(+), 0 deletions(-) diff --git a/sql/base/base.sql b/sql/base/base.sql index 5dcc7a1..b05b4fd 100644 --- a/sql/base/base.sql +++ b/sql/base/base.sql @@ -2819,3 +2819,44 @@ CREATE OR REPLACE FUNCTION migration_tools.handle_circmod (TEXT,TEXT) RETURNS VO END; $$ LANGUAGE PLPGSQL STRICT VOLATILE; +-- convenience function for handling desired_not_migrate + +CREATE OR REPLACE FUNCTION migration_tools.handle_not_migrate (TEXT,TEXT) RETURNS VOID AS $$ + DECLARE + table_schema ALIAS FOR $1; + table_name ALIAS FOR $2; + proceed BOOLEAN; + BEGIN + EXECUTE 'SELECT EXISTS ( + SELECT 1 + FROM information_schema.columns + WHERE table_schema = $1 + AND table_name = $2 + and column_name = ''desired_not_migrate'' + )' INTO proceed USING table_schema, table_name; + IF NOT proceed THEN + RAISE EXCEPTION 'Missing column desired_not_migrate'; + END IF; + + EXECUTE 'ALTER TABLE ' + || quote_ident(table_name) + || ' DROP COLUMN IF EXISTS x_migrate'; + EXECUTE 'ALTER TABLE ' + || quote_ident(table_name) + || ' ADD COLUMN x_migrate BOOLEAN'; + + EXECUTE 'UPDATE ' || quote_ident(table_name) || ' a' + || ' SET x_migrate = CASE' + || ' WHEN BTRIM(desired_not_migrate) = ''TRUE'' THEN FALSE' + || ' WHEN BTRIM(desired_not_migrate) = ''FALSE'' THEN TRUE' + || ' WHEN BTRIM(desired_not_migrate) = '''' THEN TRUE' + || ' END'; + + EXECUTE 'SELECT migration_tools.assert( + NOT EXISTS (SELECT 1 FROM ' || quote_ident(table_name) || ' WHERE x_migrate IS NULL), + ''Not all desired_not_migrate values understood'', + ''All desired_not_migrate values understood'' + );'; + + END; +$$ LANGUAGE PLPGSQL STRICT VOLATILE; -- 1.7.2.5