bool QgsAbstractFeatureIterator::nextFeature( QgsFeature& f )
{
bool dataOk = false;
switch ( mRequest.filterType() )
{
case QgsFeatureRequest::FilterExpression:
dataOk = nextFeatureFilterExpression( f );
break;
case QgsFeatureRequest::FilterFids:
dataOk = nextFeatureFilterFids( f );
break;
default:
dataOk = fetchFeature( f );
break;
}
// simplify the geometry using the simplifier configured
if ( dataOk && mLocalSimplification )
{
QgsGeometry* geometry = f.geometry();
if ( geometry ) simplify( f );
}
return dataOk;
}
bool QgsAbstractFeatureIterator::nextFeature( QgsFeature& f )
{
bool dataOk = false;
if ( mRequest.limit() >= 0 && mFetchedCount >= mRequest.limit() )
{
return false;
}
if ( mUseCachedFeatures )
{
if ( mFeatureIterator != mCachedFeatures.constEnd() )
{
f = mFeatureIterator->mFeature;
++mFeatureIterator;
dataOk = true;
}
else
{
dataOk = false;
// even the zombie dies at this point...
mZombie = false;
}
}
else
{
switch ( mRequest.filterType() )
{
case QgsFeatureRequest::FilterExpression:
dataOk = nextFeatureFilterExpression( f );
break;
case QgsFeatureRequest::FilterFids:
dataOk = nextFeatureFilterFids( f );
break;
default:
dataOk = fetchFeature( f );
break;
}
}
// simplify the geometry using the simplifier configured
if ( dataOk && mLocalSimplification )
{
if ( f.constGeometry() )
simplify( f );
}
if ( dataOk )
mFetchedCount++;
return dataOk;
}
