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CdbBdbSViewCollectionP.ddl

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#ifndef CDBBDBSHARED_VIEW_COLLECTION_P_HH
#define CDBBDBSHARED_VIEW_COLLECTION_P_HH

// File and Version Information:
//      $Id: CdbBdbSViewCollectionP.ddl,v 1.6 2004/12/08 09:26:55 gapon Exp $


#include "CdbBdbShared/CdbBdbSCollectionP.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 CdbBdbSViewCollectionP : public CdbBdbSCollectionP {

public:

  // Bring the type definitions from the base class into the scope
  // of the current one

//    using CdbBdbSCollectionP::IteratorOfNames;
//    using CdbBdbSCollectionP::IteratorOfIdentifiers;

public:

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

  /// Destructor

    virtual ~CdbBdbSViewCollectionP( );

  /// Insert an element
  /**
    * Override the method of the base class to perform additional tests
    * which are important in the current context.
    *
    * @see CdbBdbSCollectionP::insert()
    */
    virtual CdbStatus insert( const BdbRef( CdbBdbSCollectionElementP )& 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( BdbRef( CdbBdbSCollectionElementP )& theRef );

private:

    BdbRef( CdbBdbSCollectionElementP ) _newestRef;
};

#endif /* CDBBDBSHARED_VIEW_COLLECTION_P_HH */

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