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#pragma once
#include "ikeyvaluestore.h"
#include <map>
#include <string>
/**
* Default implementation of a key/value store by use of std::map.
*/
class KeyValueStore :
public virtual IKeyValueStore
{
private:
typedef std::map<std::string, std::string> KeyValues;
KeyValues _keyValues;
public:
std::size_t getPropertyCount() const
{
return _keyValues.size();
}
virtual void clearProperties() override
{
_keyValues.clear();
}
virtual std::string getProperty(const std::string& key) const override
{
auto existing = _keyValues.find(key);
return existing != _keyValues.end() ? existing->second : std::string();
}
virtual void setProperty(const std::string& key, const std::string& value) override
{
if (value.empty())
{
removeProperty(key);
return;
}
_keyValues[key] = value;
}
virtual void removeProperty(const std::string& key) override
{
_keyValues.erase(key);
}
virtual void foreachProperty(const std::function<void(const std::string&, const std::string&)>& visitor) const override
{
for (const auto& pair : _keyValues)
{
visitor(pair.first, pair.second);
}
}
};
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