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131 lines
3.2 KiB
C++
131 lines
3.2 KiB
C++
//
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// StrategyCollection.h
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//
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// Library: Foundation
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// Package: Cache
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// Module: StrategyCollection
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//
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// Definition of the StrategyCollection class.
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//
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// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// SPDX-License-Identifier: BSL-1.0
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//
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#ifndef Foundation_StrategyCollection_INCLUDED
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#define Foundation_StrategyCollection_INCLUDED
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#include <vector>
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#include "Poco/AbstractStrategy.h"
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#include "Poco/KeyValueArgs.h"
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#include "Poco/SharedPtr.h"
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#include "Poco/ValidArgs.h"
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namespace Poco
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{
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template <class TKey, class TValue>
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class StrategyCollection : public AbstractStrategy<TKey, TValue>
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/// An StrategyCollection is a decorator masking n collections as a single one.
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{
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public:
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typedef std::vector<SharedPtr<AbstractStrategy<TKey, TValue>>> Strategies;
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typedef typename Strategies::iterator Iterator;
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typedef typename Strategies::const_iterator ConstIterator;
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public:
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StrategyCollection() { }
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~StrategyCollection() { }
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void pushBack(AbstractStrategy<TKey, TValue> * pStrat)
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/// Adds an AbstractStrategy to the collection. Class takes ownership of pointer
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{
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_strategies.push_back(SharedPtr<AbstractStrategy<TKey, TValue>>(pStrat));
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}
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void popBack()
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/// Removes the last added AbstractStrategy from the collection.
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{
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_strategies.pop_back();
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}
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void onAdd(const void * pSender, const KeyValueArgs<TKey, TValue> & key)
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/// Adds the key to the strategy.
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/// If for the key already an entry exists, it will be overwritten.
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{
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Iterator it = _strategies.begin();
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Iterator endIt = _strategies.end();
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for (; it != endIt; ++it)
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{
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(*it)->onAdd(pSender, key);
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}
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}
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void onRemove(const void * pSender, const TKey & key)
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/// Removes an entry from the strategy. If the entry is not found
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/// the remove is ignored.
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{
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Iterator it = _strategies.begin();
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Iterator endIt = _strategies.end();
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for (; it != endIt; ++it)
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{
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(*it)->onRemove(pSender, key);
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}
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}
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void onGet(const void * pSender, const TKey & key)
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{
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Iterator it = _strategies.begin();
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Iterator endIt = _strategies.end();
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for (; it != endIt; ++it)
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{
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(*it)->onGet(pSender, key);
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}
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}
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void onClear(const void * pSender, const EventArgs & args)
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{
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Iterator it = _strategies.begin();
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Iterator endIt = _strategies.end();
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for (; it != endIt; ++it)
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{
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(*it)->onClear(pSender, args);
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}
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}
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void onIsValid(const void * pSender, ValidArgs<TKey> & key)
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{
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Iterator it = _strategies.begin();
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Iterator endIt = _strategies.end();
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for (; it != endIt && key.isValid(); ++it)
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{
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(*it)->onIsValid(pSender, key);
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}
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}
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void onReplace(const void * pSender, std::set<TKey> & elemsToRemove)
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{
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Iterator it = _strategies.begin();
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Iterator endIt = _strategies.end();
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for (; it != endIt; ++it)
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{
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(*it)->onReplace(pSender, elemsToRemove);
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}
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}
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protected:
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Strategies _strategies;
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};
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} // namespace Poco
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#endif // Foundation_StrategyCollection_INCLUDED
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