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CdbRooRoViewCollectionR.rdl

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#ifndef CDBROOREADONLY_VIEW_COLLECTION_R_RDL
#define CDBROOREADONLY_VIEW_COLLECTION_R_RDL

// File and Version Information:
//      $Id: CdbRooRoViewCollectionR.rdl,v 1.4 2004/12/08 17:36:47 gapon Exp $

#include "CdbBase/CdbCPtr.hh"

#include "CdbRooReadonly/CdbRooRoNameIdCollectionR.hh"
#include "CdbRooReadonly/CdbRooRoViewR.hh"

/// A persistent implementation the collection of persistent "view".
/**
  * In addition to its base class, the current collection brings in
  * the concept and extended API for the "newest" element. The "newest"
  * element is the view, which has the most recent creation time.
  */
class CdbRooRoViewCollectionR : public CdbRooRoNameIdCollectionR< CdbRooRoViewR > {

public:

  /// Default constructor
  /**
    * Initializes empty collection.
    */
    CdbRooRoViewCollectionR( );

  /// Destructor

    virtual ~CdbRooRoViewCollectionR( );

  /// Insert an element
  /**
    * Extend the "::add" method of the base class to perform additional tests
    * which are important in the current context.
    *
    * @see CdbRooRoNameIdCollectionR::add()
    */
    virtual CdbStatus add( const CdbRooRoViewR& theRef );

  /// Find the most recent view
  /**
    * The most recent view is the one having the most recent creation time.
    * The method will return CdbStatus::NotFound if the collection is empty.
    */
    virtual CdbStatus newest( CdbRooRoViewR& theRef );

  /// Find the most recent view
  /**
    * Being functionally similar to the previous method this one would initialize
    * a counted smart pointer onto the found object.
    */
    virtual CdbStatus newest( CdbCPtr< CdbRooRoViewR >& thePtr );

private:

    UShort_t _newestId;

    ClassDef(CdbRooRoViewCollectionR,1)
};

#endif /* CDBROOREADONLY_VIEW_COLLECTION_R_RDL */

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