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wlan-cloud-lib-poco/Util/include/Poco/Util/LocalConfigurationView.h
2022-06-20 17:48:53 +02:00

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//
// LocalConfigurationView.h
//
// Library: Util
// Package: Configuration
// Module: LocalConfigurationView
//
// Definition of the ConfigurationView class.
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#ifndef Util_LocalConfigurationView_INCLUDED
#define Util_LocalConfigurationView_INCLUDED
#include "Poco/Util/AbstractConfiguration.h"
#include "Poco/Util/Util.h"
namespace Poco {
namespace Util {
class Util_API LocalConfigurationView : public AbstractConfiguration
/// This configuration implements a "view" into a sub-hierarchy
/// of another configuration.
///
/// For example, given a configuration with the following properties:
/// config.value1
/// config.value2
/// config.sub.value1
/// config.sub.value2
/// and a LocalConfigurationView with the prefix "config", then
/// the above properties will be available via the view as
/// value1
/// value2
/// sub.value1
/// sub.value2
///
/// A LocalConfigurationView is most useful in combination with a
/// LayeredConfiguration.
///
/// The LocalConfigurationView only searches for the properties in the viewed Space.
{
public:
LocalConfigurationView(const std::string& prefix, AbstractConfiguration::Ptr pConfig);
/// Creates the LocalConfigurationView. The LocalConfigurationView
/// retains (shared) ownership of the passed configuration.
protected:
bool getRaw(const std::string& key, std::string& value) const;
void setRaw(const std::string& key, const std::string& value);
void enumerate(const std::string& key, Keys& range) const;
void removeRaw(const std::string& key);
std::string translateKey(const std::string& key) const;
~LocalConfigurationView();
private:
LocalConfigurationView(const LocalConfigurationView&);
LocalConfigurationView& operator=(const LocalConfigurationView&);
std::string _prefix;
AbstractConfiguration::Ptr _pConfig;
};
}} // namespace Poco::Util
#endif // Util_LocalConfigurationView_INCLUDED