topical media & game development

topical media & game development

[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

lib-of-vs-libs-Poco-include-Poco-AbstractStrategy.h / h


  //
  // AbstractStrategy.h
  //
  //  $Id: //poco/1.3/Foundation/include/Poco/AbstractStrategy.h#1$ 
  //
  // Library: Foundation
  // Package: Cache
  // Module:  AbstractCache
  //
  // Definition of the AbstractStrategy class.
  //
  // Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
  // and Contributors.
  //
  // Permission is hereby granted, free of charge, to any person or organization
  // obtaining a copy of the software and accompanying documentation covered by
  // this license (the "Software") to use, reproduce, display, distribute,
  // execute, and transmit the Software, and to prepare derivative works of the
  // Software, and to permit third-parties to whom the Software is furnished to
  // do so, all subject to the following:
  // 
  // The copyright notices in the Software and this entire statement, including
  // the above license grant, this restriction and the following disclaimer,
  // must be included in all copies of the Software, in whole or in part, and
  // all derivative works of the Software, unless such copies or derivative
  // works are solely in the form of machine-executable object code generated by
  // a source language processor.
  // 
  // THE 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, TITLE AND NON-INFRINGEMENT. IN NO EVENT
  // SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
  // FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
  // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  // DEALINGS IN THE SOFTWARE.
  //
  
  ifndef  Foundation_AbstractStrategy_INCLUDED
  define  Foundation_AbstractStrategy_INCLUDED
  
  include "Poco/KeyValueArgs.h"
  include "Poco/ValidArgs.h"
  include "Poco/EventArgs.h"
  
  namespace Poco {
  
  template <class TKey, class TValue> 
  class AbstractStrategy

An AbstractStrategy is the interface for all strategies. { public: AbstractStrategy() { }


          virtual ~AbstractStrategy()
          {
          }
          
          virtual void onAdd(const void* pSender, const KeyValueArgs <TKey, TValue>& key) = 0;

Adds the key to the strategy. If for the key already an entry exists, an excpetion will be thrown.


          virtual void onRemove(const void* pSender, const TKey& key) = 0;

Removes an entry from the strategy. If the entry is not found the remove is ignored.


          virtual void onGet(const void* pSender, const TKey& key) = 0;

Informs the strategy that a read-access happens to an element.


          virtual void onClear(const void* pSender, const EventArgs& args) = 0;

Removes all elements from the cache.


          virtual void onIsValid(const void* pSender, ValidArgs<TKey>& key) = 0;

Used to query if a key is still valid (i.e. cached).


          virtual void onReplace(const void* pSender, std::set<TKey>& elemsToRemove) = 0;

Used by the Strategy to indicate which elements should be removed from the cache. Note that onReplace does not change the current list of keys. The cache object is reponsible to remove the elements. };


  } // namespace Poco
  
  endif

[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

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