hierarchical_key.hpp¶

Namespaces¶

Name
sgns
sgns::crdt

Classes¶

Name

class sgns::crdt::HierarchicalKey
A Key represents the unique identifier of an object, inspired by file systems and Google App Engine key model. Keys are meant to be unique across a system. Keys are hierarchical, incorporating more and more specific namespaces. Thus keys can be deemed 'children' or 'ancestors' of other keys:: Key("/Comedy") Key("/Comedy/MontyPython") Also, every namespace can be parametrized to embed relevant object information. For example, the Key name (most specific namespace) could include the object type:: Key("/Comedy/MontyPython/Actor:JohnCleese") Key("/Comedy/MontyPython/Sketch:CheeseShop") Key("/Comedy/MontyPython/Sketch:CheeseShop/Character:Mousebender").

Source code¶

#ifndef SUPERGENIUS_HIERARCHICAL_KEY_HPP
#define SUPERGENIUS_HIERARCHICAL_KEY_HPP

#include <string>
#include <vector>

namespace sgns::crdt
{
  class HierarchicalKey
  {
  public:

    HierarchicalKey() = default;

    HierarchicalKey( std::string key );

    HierarchicalKey( const HierarchicalKey & ) = default;

    virtual ~HierarchicalKey() = default;

    HierarchicalKey& operator=(const HierarchicalKey&) = default;

    void SetKey(const std::string& aKey ) { key_ = aKey; };

    std::string GetKey() const { return key_; };

    HierarchicalKey ChildString( std::string_view s ) const;

    std::vector<std::string> GetList() const;

    bool IsTopLevel() const;

    bool operator==( const HierarchicalKey &rhs ) const
    {
      return key_ == rhs.key_;
    }

    bool operator!=( const HierarchicalKey &rhs ) const
    {
      return !operator==(rhs);
    }

  private:

    std::string key_;
  };
} // namespace sgns::crdt

#endif //SUPERGENIUS_HIERARCHICAL_KEY_HPP

Updated on 2026-03-04 at 13:10:44 -0800