SequenceManager.h

Go to the documentation of this file.

#ifndef CondCore_DBCommon_SequenceManager_h
#define CondCore_DBCommon_SequenceManager_h

#include <string>
#include <map>
#include "CondCore/DBCommon/interface/DbSession.h"
//
// Package:     DBCommon
// Class  :     SequenceManager
// 
//
// Author:      Zhen Xie
//
namespace coral{
  class ISchema;
  class AttributeList;  
}
namespace cond {  
  class CoralTransaction;
  class SequenceManager {
  public:
    SequenceManager(cond::DbSession& coraldb,
            const std::string& sequenceTableName);

    ~SequenceManager();

    unsigned long long incrementId( const std::string& reftableName );

    void updateId( const std::string& reftableName, 
           unsigned long long lastId );

    void clear();
    
    bool existSequencesTable();

    void createSequencesTable();
    
  private:

    bool lockEntry( coral::ISchema& schema,
            const std::string& reftableName,
            unsigned long long& lastId );
    void init();
    private:
      cond::DbSession m_coraldb;

      std::string m_sequenceTableName;

      std::map< std::string, unsigned long long > m_tableToId;
      
      bool m_sequenceTableExists;

      std::string m_whereClause;

      coral::AttributeList* m_whereData;

      std::string m_setClause;
      bool m_started;
    };
}//ns cond
#endif