package votorola.a.register; // Copyright 2008, Michael Allan. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Votorola Software"), to deal in the Votorola Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicence, and/or sell copies of the Votorola Software, and to permit persons to whom the Votorola Software is furnished to do so, subject to the following conditions: The preceding copyright notice and this permission notice shall be included in all copies or substantial portions of the Votorola Software. THE VOTOROLA SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE VOTOROLA SOFTWARE OR THE USE OR OTHER DEALINGS IN THE VOTOROLA SOFTWARE.

import votorola.g.lang.*;


/** A null implementation of a node in a compiled voter list.
  */
public @ThreadSafe final class ListNode0 implements ListNode
{

    private static final long serialVersionUID = 0L;



    /** Creates a ListNode0.
      *
      *     @param voterEmail per {@linkplain #voterEmail() voterEmail}()
      */
    public ListNode0( String voterEmail )
    {
        if( voterEmail == null ) throw new NullPointerException(); // fail fast

        this.voterEmail = voterEmail;
        bar = ListNodeC.defaultRootNeighbourhoodBar( voterEmail );
    }



   // - L i s t - N o d e ----------------------------------------------------------------


    /** @return zero
      */
    public int doubterCount() { return 0; }



    /** @return a default bar
      * @see ListNodeC#defaultRootNeighbourhoodBar(String)
      */
    public String getBar() { return bar; }


        private final String bar;



    /** @return empty string
      */
    public String getNeighbourhoodPath() { return ""; }



    /** @return null
      */
    public String getResidence() { return null; }



    public String leafRegisterPath() { return "."; } // super-register traces not yet supported, only leaves



    /** @return zero
      */
    public int primaryTrustEdgeCount() { return 0; }



    /** @return zero
      */
    public int trustLevel() { return 0; }



    public String voterEmail() { return voterEmail; }


        private final String voterEmail;



   // - O b j e c t ----------------------------------------------------------------------


    /** Returns the {@linkplain #voterEmail() voter email address}.
      */
    public @Override String toString() { return voterEmail(); }



}