# Package org.apache.cassandra.db.transform

- Interface Summary
  Interface | Description
  --- | ---
  MorePartitions<I extends BasePartitionIterator<?>> | An interface for providing new partitions for a partitions iterator.
  MoreRows<I extends BaseRowIterator<?>> | An interface for providing new row contents for a partition.

- Class Summary
  Class | Description
  --- | ---
  BasePartitions<R extends BaseRowIterator<?>,I extends BasePartitionIterator<? extends BaseRowIterator<?>>> |
  BaseRows<R extends Unfiltered,I extends BaseRowIterator<? extends Unfiltered>> |
  EmptyPartitionsDiscarder |
  Filter |
  FilteredPartitions |
  FilteredRows |
  StoppingTransformation<I extends BaseRowIterator<?>> |
  Transformation<I extends BaseRowIterator<?>> | We have a single common superclass for all Transformations to make implementation efficient.

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