include/uninullgen.h

   1 /* -*- Mode: C++ -*-
   2  * Worldvisions Weaver Software:
   3  *   Copyright (C) 1997-2002 Net Integration Technologies, Inc.
   4  *
   5  * A generator that is always empty and rejects changes.
   6  */
   7 #ifndef __UNICONFNULL_H
   8 #define __UNICONFNULL_H
   9
  10 #include "uniconfgen.h"
  11
  12 /**
  13  * A generator that is always empty and rejects changes.
  14  *
  15  * To mount, use the moniker "null:".
  16  *
  17  */
  18 class UniNullGen : public UniConfGen
  19 {
  20 public:
  21     UniNullGen() { };
  22     virtual ~UniNullGen() { };
  23
  24     /***** Overridden methods *****/
  25
  26     virtual void flush_buffers() { }
  27     virtual WvString get(const UniConfKey &key) { return WvString::null; }
  28     virtual void set(const UniConfKey &key, WvStringParm value) { }
  29     virtual void setv(const UniConfPairList &pairs) { }
  30     virtual bool haschildren(const UniConfKey &key) { return false; }
  31     virtual Iter *iterator(const UniConfKey &key) { return new NullIter(); }
  32 };
  33
  34
  35 #endif // __UNICONFNULL_H