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CdbBdbSViewItr.cc

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// File and Version Information:
//      $Id: CdbBdbSViewItr.cc,v 1.3 2002/09/23 22:41:13 gapon Exp $

/// The implementation of the CdbBdbSViewItr class.
/**
  * @see CdbBdbSViewItr
  */

#include "BaBar/BaBar.hh"

#include "CdbBdbShared/CdbBdbSViewItr.hh"
#include "CdbBdbShared/CdbBdbSOriginP.hh"
#include "CdbBdbShared/CdbBdbSViewP.hh"

#include "CdbBase/CdbDatabase.hh"
#include "CdbBase/CdbCompositeName.hh"

#include <assert.h>

CdbBdbSViewItr::CdbBdbSViewItr( const BdbHandle(CdbBdbSRegistryP)& theMasterRegistryH ) :
    _masterRegistryH(theMasterRegistryH),
    _isValid(false),
    _hasEverBeenAdvanced(false)
{
    assert( !theMasterRegistryH.isNull( ));
}

CdbBdbSViewItr::CdbBdbSViewItr( const CdbBdbSViewItr& theItr ) :
    _masterRegistryH    (theItr._masterRegistryH),
    _isValid            (theItr._isValid),
    _hasEverBeenAdvanced(theItr._hasEverBeenAdvanced),
    _originNameItr      (theItr._originNameItr),
    _viewNameItr        (theItr._viewNameItr),
    _originName         (theItr._originName),
    _viewName           (theItr._viewName),
    _currentValue       (theItr._currentValue)
{ }

CdbBdbSViewItr::~CdbBdbSViewItr( )
{ }

CdbStatus
CdbBdbSViewItr::reset( )
{
    _isValid             = false;
    _hasEverBeenAdvanced = false;

    return CdbStatus::Success;
}

bool
CdbBdbSViewItr::tryNextView( )
{
    if( _viewNameItr.next( )) {
        _viewName = _viewNameItr.value( );

        CdbCompositeName compositeViewName( _originName.c_str( ),
                                            _viewName.c_str( ));
        assert( compositeViewName.isValid( ));

        _currentValue = compositeViewName.getName( );

        return true;
    }
    return tryNextOrigin( );
}

bool
CdbBdbSViewItr::tryNextOrigin( )
{
    while( _originNameItr.next( )) {

        _originName = _originNameItr.value( );

        BdbHandle(CdbBdbSRegistryP) rH;
        if( CdbStatus::Success == CdbBdbSRegistryP::findByOrigin( rH,
                                                                  _originName.c_str( ))) {

            BdbRef(CdbBdbSViewCollectionP) vCollRef = rH->viewCollection( );
            assert( !BdbIsNull(vCollRef));

            _viewNameItr = vCollRef->iterator_names( );

            return tryNextView( );
        }
    }
    return false;
}
 
bool
CdbBdbSViewItr::next( )
{
    if( _hasEverBeenAdvanced ) {
        if( _isValid ) {
            _isValid = tryNextView( );
        }

    } else {

        BdbRef(CdbBdbSOriginCollectionP) oCollRef = _masterRegistryH->originCollection( );
        assert( !BdbIsNull(oCollRef));

        _originNameItr = oCollRef->iterator_names( );

        _isValid             = tryNextOrigin( );
        _hasEverBeenAdvanced = true;
    }
    return _isValid;
}

CdbBdbSViewItr::ValueType
CdbBdbSViewItr::value( )
{
    if( _isValid ) return _currentValue.c_str( );
    return 0;
}

bool
CdbBdbSViewItr::isValid( )
{
    return _isValid;
}

CdbBdbSViewItr::InterfaceType*
CdbBdbSViewItr::clone( ) const
{
    return new CdbBdbSViewItr( *this );
}

/////////////////
// End Of File //
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