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CdbBdbSNodeP.ddl

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#ifndef CDBBDBSHARED_NODE_P_HH
#define CDBBDBSHARED_NODE_P_HH

// File and Version Information:
//      $Id: CdbBdbSNodeP.ddl,v 1.4 2004/08/06 05:54:25 bartoldu Exp $

#include "BdbUtil/Bdb.hh"

#include "CdbBase/CdbCommon.hh"

#include <iostream>

/// Base class for the all types of nodes of the "paged" v-array
/**
  * The subclasses include both 'dircetory' and 'leaf' nodes.
  */
template< typename E >
class CdbBdbSNodeP : public BdbPersObj {

public:

  // Constructors

    CdbBdbSNodeP( d_ULong theLevel = 0 );

  // Destructor

    virtual ~CdbBdbSNodeP( );

  // Resize the node (including its subnodes if any) to fit specified size

    virtual BdbStatus resize( d_ULong theNewSize,
                              d_ULong theNumPerLeaf,
                              d_ULong theNumPerDirectory ) = 0;

  // Modify an element at specified location

    virtual void setElementAt( d_ULong  theIndex,
                               const E& value,
                               d_ULong  theNumPerLeaf,
                               d_ULong  theNumPerDirectory ) = 0;

  // Return a copy of an element at specified location

    virtual E elementAt( d_ULong theIndex,
                         d_ULong theNumPerLeaf,
                         d_ULong theNumPerDirectory ) const = 0;

  /// Dump the node (recursive)
  /**
    * The detailed dump of the contents is only done if the corresponding
    * flass value is "true".
    */
    virtual void dump( d_ULong  numSpaces,
                       std::ostream& o,
                       bool     dumpContentsFlag ) const = 0;

public:

  // The current level of the node

    d_ULong _level;
};

#ifdef    BABAR_COMP_INST
#include "CdbBdbShared/CdbBdbSNodeP.cc"
#endif /* BABAR_COMP_INST */

#endif /* CDBBDBSHARED_NODE_P_HH */

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