Project

General

Profile

« Previous | Next » 

Revision 13135

schemas/util.sql: added try_cast()

View differences:

trunk/schemas/util.sql
3860 3860

  
3861 3861

  
3862 3862
--
3863
-- Name: try_cast(text, anyelement); Type: FUNCTION; Schema: util; Owner: -
3864
--
3865

  
3866
CREATE FUNCTION try_cast(value text, ret_type_null anyelement) RETURNS anyelement
3867
    LANGUAGE plpgsql IMMUTABLE
3868
    AS $$
3869
BEGIN
3870
	/* need explicit cast because some types not implicitly-castable, and also
3871
	to make the cast happen inside the try block. (*implicit* casts to the
3872
	return type happen at the end of the function, outside any block.) */
3873
	RETURN util.cast(value, ret_type_null);
3874
EXCEPTION
3875
WHEN data_exception THEN
3876
	PERFORM util.raise('WARNING', SQLERRM);
3877
	RETURN NULL;
3878
END;
3879
$$;
3880

  
3881

  
3882
--
3883
-- Name: FUNCTION try_cast(value text, ret_type_null anyelement); Type: COMMENT; Schema: util; Owner: -
3884
--
3885

  
3886
COMMENT ON FUNCTION try_cast(value text, ret_type_null anyelement) IS '
3887
ret_type_null: NULL::ret_type
3888
';
3889

  
3890

  
3891
--
3863 3892
-- Name: try_create(text); Type: FUNCTION; Schema: util; Owner: -
3864 3893
--
3865 3894

  

Also available in: Unified diff