How to use

BaseRowIterator

in

org.apache.cassandra.db.rows

  @Override
  protected BaseRowIterator applyToPartition(BaseRowIterator iterator)
  {
    if (iterator.isEmpty())
    {
      iterator.close();
      return null;
    }

    return iterator;
  }
}

public PartitionColumns columns()
{
  return input.columns();
}

public boolean isReverseOrder()
{
  return input.isReverseOrder();
}

public BaseRows(I input)
{
  super(input);
  staticRow = input.staticRow();
  partitionKey = input.partitionKey();
}

@Override
public BaseRowIterator<T> applyToPartition(BaseRowIterator<T> partition)
{
  currentKey = partition.partitionKey();
  // If this is the first partition of this page, this could be the continuation of a partition we've started
  // on the previous page. In which case, we could have the problem that the partition has no more "regular"
  // rows (but the page size is such we didn't knew before) but it does has a static row. We should then skip
  // the partition as returning it would means to the upper layer that the partition has "only" static columns,
  // which is not the case (and we know the static results have been sent on the previous page).
  if (isFirstPartition)
  {
    isFirstPartition = false;
    if (isPreviouslyReturnedPartition(currentKey) && !partition.hasNext())
    {
      partition.close();
      return null;
    }
  }
  return apply(partition);
}

int len = length;
while (!stop.isSignalled && !stopChild.isSignalled && input.hasNext())
  Unfiltered next = input.next();

public CFMetaData metadata()
{
  return input.metadata();
}

public DecoratedKey partitionKey()
{
  return input.partitionKey();
}

@Override
public BaseRowIterator<T> applyToPartition(BaseRowIterator<T> partition)
{
  currentKey = partition.partitionKey();
  // If this is the first partition of this page, this could be the continuation of a partition we've started
  // on the previous page. In which case, we could have the problem that the partition has no more "regular"
  // rows (but the page size is such we didn't knew before) but it does has a static row. We should then skip
  // the partition as returning it would means to the upper layer that the partition has "only" static columns,
  // which is not the case (and we know the static results have been sent on the previous page).
  if (isFirstPartition)
  {
    isFirstPartition = false;
    if (isPreviouslyReturnedPartition(currentKey) && !partition.hasNext())
    {
      partition.close();
      return null;
    }
  }
  return apply(partition);
}

public BaseRows(I input)
{
  super(input);
  staticRow = input.staticRow();
  partitionKey = input.partitionKey();
}

int len = length;
while (!stop.isSignalled && input.hasNext())
  Unfiltered next = input.next();

public CFMetaData metadata()
{
  return input.metadata();
}

public DecoratedKey partitionKey()
{
  return input.partitionKey();
}

@Override
public BaseRowIterator<T> applyToPartition(BaseRowIterator<T> partition)
{
  currentKey = partition.partitionKey();
  // If this is the first partition of this page, this could be the continuation of a partition we've started
  // on the previous page. In which case, we could have the problem that the partition has no more "regular"
  // rows (but the page size is such we didn't knew before) but it does has a static row. We should then skip
  // the partition as returning it would means to the upper layer that the partition has "only" static columns,
  // which is not the case (and we know the static results have been sent on the previous page).
  if (isFirstPartition)
  {
    isFirstPartition = false;
    if (isPreviouslyReturnedPartition(currentKey) && !partition.hasNext())
    {
      partition.close();
      return null;
    }
  }
  return apply(partition);
}

  @Override
  protected BaseRowIterator applyToPartition(BaseRowIterator iterator)
  {
    if (iterator.isEmpty())
    {
      iterator.close();
      return null;
    }

    return iterator;
  }
}

public BaseRows(I input)
{
  super(input);
  staticRow = input.staticRow();
  partitionKey = input.partitionKey();
}

int len = length;
while (!stop.isSignalled && !stopChild.isSignalled && input.hasNext())
  Unfiltered next = input.next();

public CFMetaData metadata()
{
  return input.metadata();
}

public boolean isReverseOrder()
{
  return input.isReverseOrder();
}

public PartitionColumns columns()
{
  return input.columns();
}