/usr/include/Poco/Util/ConfigurationView.h is in libpoco-dev 1.8.0.1-1ubuntu4.
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// ConfigurationView.h
//
// Library: Util
// Package: Configuration
// Module: ConfigurationView
//
// Definition of the ConfigurationView class.
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#ifndef Util_ConfigurationView_INCLUDED
#define Util_ConfigurationView_INCLUDED
#include "Poco/Util/Util.h"
#include "Poco/Util/AbstractConfiguration.h"
namespace Poco {
namespace Util {
class Util_API ConfigurationView: 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 ConfigurationView with the prefix "config", then
/// the above properties will be available via the view as
/// value1
/// value2
/// sub.value1
/// sub.value2
///
/// A ConfigurationView is most useful in combination with a
/// LayeredConfiguration.
///
/// If a property is not found in the view, it is searched in
/// the original configuration. Given the above example configuration,
/// the property named "config.value1" will still be found in the view.
///
/// The main reason for this is that placeholder expansion (${property})
/// still works as expected given a ConfigurationView.
{
public:
ConfigurationView(const std::string& prefix, AbstractConfiguration* pConfig);
/// Creates the ConfigurationView. The ConfigurationView does not take
/// 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;
~ConfigurationView();
private:
ConfigurationView(const ConfigurationView&);
ConfigurationView& operator = (const ConfigurationView&);
std::string _prefix;
AbstractConfiguration* _pConfig;
};
} } // namespace Poco::Util
#endif // Util_ConfigurationView_INCLUDED
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