/data/refman/pasoursint/CMSSW_5_3_4/src/DataFormats/SiStripCommon/interface/SiStripNullKey.h

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// Last commit: $Id: SiStripNullKey.h,v 1.4 2008/02/06 14:32:48 bainbrid Exp $

#ifndef DataFormats_SiStripCommon_SiStripNullKey_H
#define DataFormats_SiStripCommon_SiStripNullKey_H

#include "DataFormats/SiStripCommon/interface/ConstantsForGranularity.h"
#include "DataFormats/SiStripCommon/interface/SiStripKey.h"

class SiStripNullKey;

std::ostream& operator<< ( std::ostream&, const SiStripNullKey& );

class SiStripNullKey : public SiStripKey {
  
 public:
  
  // ---------- Constructors ----------
  
  SiStripNullKey();

  // ---------- Utility methods ---------- 

  bool isEqual( const SiStripKey& ) const;
  
  bool isConsistent( const SiStripKey& ) const;

  bool isValid() const;
  
  bool isValid( const sistrip::Granularity& ) const;
  
  bool isInvalid() const;

  bool isInvalid( const sistrip::Granularity& ) const;

  // ---------- Print methods ----------
  
  virtual void print( std::stringstream& ss ) const;
  
  virtual void terse( std::stringstream& ss ) const {;}
  
 private: 

  // ---------- Private methods ----------

  void initFromValue();
  void initFromKey();
  void initFromPath();
  void initGranularity();
  
};

#endif // DataFormats_SiStripCommon_SiStripNullKey_H