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CdbRooSimpleTranslator.hh

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#ifndef CDB_ROO_SIMPLETRANSLATOR_HH
#define CDB_ROO_SIMPLETRANSLATOR_HH

// File and Version Information:
//      $Id: CdbRooSimpleTranslator.hh,v 1.1 2005/07/12 21:55:28 jtinslay Exp $

#include "CdbRoo/CdbRooObjectTranslatorRT.hh"

/// A simpple implementation of persistent-to-transient translators
/**
  * This class is a specialization of generic "persistent-to-transient"
  * translators for persistent classes having the following minimal interface:
  *
  *   class T;
  *   class R : public CdbRooObjectR {
  *   public:
  *     T* transient() const;
  *   };
  *
  * Where:
  *
  *   T - is a transient type
  *   R - is a persistent type
  *
  * @see class CdbRooObjectTranslatorRT
  */
template< class R,
          class T >
class CdbRooSimpleTranslator : public CdbRooObjectTranslatorRT<R,T> {

private:

  /// Copy constructor (NOT IMPLEMENTED)

    CdbRooSimpleTranslator( const CdbRooSimpleTranslator<R,T>& );

  /// Assignment operator (NOT IMPLEMENTED)

    CdbRooSimpleTranslator<R,T>& operator=( const CdbRooSimpleTranslator<R,T>& );

public:

  /// Default constructor
  /**
    * @see CdbRooObjectTranslatorRT::CdbRooObjectTranslatorRT()
    */
    CdbRooSimpleTranslator(  ) :
         CdbRooObjectTranslatorRT<R,T>( )
    { }

  /// Destructor

    virtual ~CdbRooSimpleTranslator( ) { }

protected:

  /// Translate into a transient object (persistent & transient type specific translation)
  /**
    * Implement the corresponding method defined in the base class.
    *
    * @see CdbRooObjectTranslatorRT::toTransientRT()
    */
    virtual CdbStatus toTransientRT( T*&               theTransientPtr,
                                     const CdbCPtr<R>& theObjectPtr ) const
    {
        theTransientPtr = theObjectPtr->transient( );
        return ( 0 == theTransientPtr ? CdbStatus::Error : CdbStatus::Success );
    }
};

#endif  // CDB_ROO_SIMPLETRANSLATOR_HH

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