topical media & game development
lib-of-vs-libs-Poco-include-Poco-StrategyCollection.h / h
//
// StrategyCollection.h
//
//
//
// Library: Foundation
// Package: Cache
// Module: StrategyCollection
//
// Definition of the StrategyCollection 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_StrategyCollection_INCLUDED
define Foundation_StrategyCollection_INCLUDED
include "Poco/KeyValueArgs.h"
include "Poco/ValidArgs.h"
include "Poco/AbstractStrategy.h"
include "Poco/SharedPtr.h"
include <vector>
namespace Poco {
template <class TKey, class TValue>
class StrategyCollection: public AbstractStrategy<TKey, TValue>
An StrategyCollection is a decorator masking n collections as a single one
{
public:
typedef std::vector<SharedPtr<AbstractStrategy<TKey, TValue> > > Strategies;
typedef typename Strategies::iterator Iterator;
typedef typename Strategies::const_iterator ConstIterator;
public:
StrategyCollection()
{
}
~StrategyCollection()
{
}
void pushBack(AbstractStrategy<TKey, TValue>* pStrat)
Adds an AbstractStrategy to the collection. Class takes ownership of pointer
{
_strategies.push_back(SharedPtr<AbstractStrategy<TKey, TValue> >(pStrat));
}
void popBack()
Removes the last added AbstractStrategy from the collection.
{
_strategies.pop_back();
}
void onAdd(const void* pSender, const KeyValueArgs <TKey, TValue>& key)
Adds the key to the strategy.
If for the key already an entry exists, it will be overwritten.
{
Iterator it = _strategies.begin();
Iterator endIt = _strategies.end();
for (; it != endIt; ++it)
{
(*it)->onAdd(pSender, key);
}
}
void onRemove(const void* pSender, const TKey& key)
Removes an entry from the strategy. If the entry is not found
the remove is ignored.
{
Iterator it = _strategies.begin();
Iterator endIt = _strategies.end();
for (; it != endIt; ++it)
{
(*it)->onRemove(pSender, key);
}
}
void onGet(const void* pSender, const TKey& key)
{
Iterator it = _strategies.begin();
Iterator endIt = _strategies.end();
for (; it != endIt; ++it)
{
(*it)->onGet(pSender, key);
}
}
void onClear(const void* pSender, const EventArgs& args)
{
Iterator it = _strategies.begin();
Iterator endIt = _strategies.end();
for (; it != endIt; ++it)
{
(*it)->onClear(pSender, args);
}
}
void onIsValid(const void* pSender, ValidArgs<TKey>& key)
{
Iterator it = _strategies.begin();
Iterator endIt = _strategies.end();
for (; it != endIt && key.isValid(); ++it)
{
(*it)->onIsValid(pSender, key);
}
}
void onReplace(const void* pSender, std::set<TKey>& elemsToRemove)
{
Iterator it = _strategies.begin();
Iterator endIt = _strategies.end();
for (; it != endIt; ++it)
{
(*it)->onReplace(pSender, elemsToRemove);
}
}
protected:
Strategies _strategies;
};
} // namespace Poco
endif
(C) Æliens
04/09/2009
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