mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-19 06:01:57 +00:00
136 lines
2.9 KiB
C++
136 lines
2.9 KiB
C++
//
|
|
// StrategyCollection.h
|
|
//
|
|
// $Id: //poco/1.4/Foundation/include/Poco/StrategyCollection.h#1 $
|
|
//
|
|
// Library: Foundation
|
|
// Package: Cache
|
|
// Module: StrategyCollection
|
|
//
|
|
// Definition of the StrategyCollection class.
|
|
//
|
|
// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
|
|
// and Contributors.
|
|
//
|
|
// SPDX-License-Identifier: BSL-1.0
|
|
//
|
|
|
|
|
|
#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 // Foundation_StrategyCollection_INCLUDED
|