mlPropertyIndex.h

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/*************************************************************************************
**
** Copyright 2010, MeVis Medical Solutions AG
**
** The user may use this file in accordance with the license agreement provided with
** the Software or, alternatively, in accordance with the terms contained in a
** written agreement between the user and MeVis Medical Solutions AG.
**
** For further information use the contact form at https://www.mevislab.de/contact
**
**************************************************************************************/
 
#ifndef ML_PROPERTY_INDEX_H
#define ML_PROPERTY_INDEX_H
 
 
 
#include "mlVesselGraphSystem.h"
 
#include "mlIntrusivePtrBase.h"
#include "mlPropertyValue.h"
#include "mlPropertyManager.h"
 
VESSELGRAPH_BEGIN_NAMESPACE
 
class SmartPropertyIndex : public IntrusivePtrBase<SmartPropertyIndex> {
public:
  typedef SmartPropertyIndex type;
  typedef boost::intrusive_ptr<type> PointerType;
  typedef boost::intrusive_ptr<const type> ConstPointerType;
 
  SmartPropertyIndex(const PropertyManager::Pointer& manager, const std::string& propertyName) :
  _manager(manager), _propertyName(propertyName) { _manager->_register(this); update(); };
 
  SmartPropertyIndex(const SmartPropertyIndex& other) :
  _manager(other._manager), _propertyName(other._propertyName), _currentIndex(other._currentIndex),
    _valid(other._valid) { _manager->_register(this); }
 
  ~SmartPropertyIndex() { _manager->_unregister(this); }
 
  operator size_t() const { if (!_valid) throw ML_BAD_PARAMETER; return _currentIndex; }
 
  void update() const { _valid = _manager->hasProperty(_propertyName); if (_valid) _currentIndex = _manager->getPropertyIndex(_propertyName); }
 
  PropertyManager* getManager() { return _manager.get(); }
  const PropertyManager* getManager() const { return _manager.get(); }
  const std::string& getName() const { return _propertyName; }
  bool isValid() const { return _valid; }
 
private:
  SmartPropertyIndex& operator=(const SmartPropertyIndex& other);
 
  PropertyManager::Pointer _manager;
  const std::string _propertyName;
  mutable size_t _currentIndex;
  mutable bool _valid;
};
 
VESSELGRAPH_END_NAMESPACE
 
#endif // __mlPropertyIndex_H_