#ifndef TSLOWCONTROLDATABASE_seen
#define TSLOWCONTROLDATABASE_seen

#include <vector>
#include "ISlowControlMySQLInterface.hxx" 


/// A singleton class that creates, and provides access to a temporary 
/// slow control database (or at least the interface to a slow control database).
/// There may be a number of different GSC databases that the user can access.
/// The user must choose a particular database to access using the following 
/// environment variables:
///
///  ENV_GSC_TSQL_URL = url of database in form  < mysql://[host]:[port]/[database_name] >
///    where ':[port]' can be ommitted
///  ENV_GSC_TSQL_USER = username for database account
///  ENV_GSC_TSQL_PSWD = password for database account
///
class ISlowControlDatabase {
public:

  virtual ~ISlowControlDatabase();

  /// Get a reference to GSC interface
  static ISlowControlMySQLInterface& Get(void);

  /// Get a reference to ODB interface
  static ISlowControlMySQLInterface& ODB(void);

 private:
  
  ISlowControlDatabase();
    
  /// The static pointer to the singleton instance.
  static ISlowControlDatabase* fTSlowControlDatabase;
   
  /// Pointer to the Slow Control Database Interface
  ISlowControlMySQLInterface *fGSCInterface;

  /// Pointer to the ODB Database Interface
  ISlowControlMySQLInterface *fODBInterface;

};
#endif