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CdbAdapterItr.cc

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// File and Version Information:
//      $Id: CdbAdapterItr.cc,v 1.2 2005/08/26 07:36:47 gapon Exp $
#include "BaBar/BaBar.hh"

/// The implementation of the CdbAdapterItr interface.
/**
  * @see CdbAdapterItr
  */

#include "CdbBase/CdbAdapterItr.hh"

#include "ErrLogger/ErrLog.hh"

#include <assert.h>
using std::endl;

template< class T,
          class I >
CdbAdapterItr<T,I>::CdbAdapterItr( CdbIItr<I>* theInputItrPtr ) :
    _myInputItrPtr(theInputItrPtr)
{
    const char* fatalStr = "CdbAdapterItr<T,I>::CdbAdapterItr() -- FATAL ERROR IN THE CONSTRUCTOR";

    if( 0 == _myInputItrPtr )
        ErrMsg(fatal) << fatalStr << endl
                      << "    Null pointer passed as a parameter where a valid input iterator was expected." << endl
                      << "    An application may have a memory corruption problem or is inproperly configured.." << endmsg;
}

template< class T,
          class I >
CdbAdapterItr<T,I>::CdbAdapterItr( const CdbAdapterItr<T,I>& theItr ) :
    _myInputItrPtr(theItr._myInputItrPtr->clone( ))
{ }

template< class T,
          class I >
CdbAdapterItr<T,I>::~CdbAdapterItr( )
{
    if( 0 != _myInputItrPtr ) {
        delete _myInputItrPtr;
        _myInputItrPtr = 0;
    }
}

template< class T,
          class I >
CdbStatus
CdbAdapterItr<T,I>::reset( )
{
    return _myInputItrPtr->reset( );
}

template< class T,
          class I >
bool
CdbAdapterItr<T,I>::next( )
{
  // Run input objects through the filter before we see an object which will
  // be accepted by the filter.

    while( _myInputItrPtr->next( )) {
        if( isAccepted( _myInputItrPtr->value( ))) return true;
    }
    return false;
}

template< class T,
          class I >
T
CdbAdapterItr<T,I>::value( )
{
    const char* fatalStr = "CdbAdapterItr<T,I>::value() -- FATAL ERROR";

    if( !_myInputItrPtr->isValid( ))
        ErrMsg(fatal) << fatalStr << endl
                      << "    Improper use of the iterator. It's either empty or it has not been" << endl
                      << "    advanced to the first element before calling the current method." << endmsg;

    return toValue( _myInputItrPtr->value( ));
}

template< class T,
          class I >
bool
CdbAdapterItr<T,I>::isValid( )
{
    return _myInputItrPtr->isValid( );
}

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

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