WSOptional

Qualifies an attribute as optional in a REST function.

Syntax

WSOptional

Usage

You use this attribute to specify an attribute in a REST function as optional. You set the WSOptional attribute in the ATTRIBUTE() clause of the parameter.

WSOptional can be set only with the following attributes:

WSQuery
WSHeader ( input, output )
WSCookie

WSOptional is an optional attribute.

Example optional cookie

PUBLIC FUNCTION add(a INTEGER ATTRIBUTE(WSQuery),
    b INTEGER ATTRIBUTE(WSHeader),
    coef FLOAT ATTRIBUTE(WSCookie,WSOptional) )
  ATTRIBUTES (WSGet,
              WSPath='/add')
  RETURNS (FLOAT)
    # ... function code  ...
    RETURN (a + b) 
END FUNCTION