Class NullDecoratorMapper

  • All Implemented Interfaces:
    DecoratorMapper

    public class NullDecoratorMapper
    extends java.lang.Object
    implements DecoratorMapper
    The NullDecoratorMapper represents the top-level DecoratorMapper that is finally delegated to if no other DecoratorMapper has intervened. It is used so the parent property does not have to be checked by other DecoratorMappers (null object pattern).
    Version:
    $Revision: 1.1 $
    Author:
    Joe Walnes
    See Also:
    DecoratorMapper
    • Constructor Detail

      • NullDecoratorMapper

        public NullDecoratorMapper()
    • Method Detail

      • init

        public void init​(Config config,
                         java.util.Properties properties,
                         DecoratorMapper parent)
        Does nothing.
        Specified by:
        init in interface DecoratorMapper
        Parameters:
        config - Config supplied by Servlet or Filter.
        properties - Any initialization properties (specific to implementation).
      • getNamedDecorator

        public Decorator getNamedDecorator​(javax.servlet.http.HttpServletRequest request,
                                           java.lang.String name)
        Returns null.
        Specified by:
        getNamedDecorator in interface DecoratorMapper