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SequenceManager.h

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#ifndef CondCore_DBCommon_SequenceManager_h
#define CondCore_DBCommon_SequenceManager_h

#include <string>
#include <map>
//
// Package:     DBCommon
// Class  :     SequenceManager
// 
//
// Author:      Zhen Xie
//
namespace coral{
  class ISchema;
  class AttributeList;  
}
namespace cond {  
  class CoralTransaction;
  class SequenceManager {
  public:
    SequenceManager(cond::CoralTransaction& 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::CoralTransaction& 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

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