RowIterators (apache-cassandra API)

java.lang.Object
- org.apache.cassandra.db.rows.RowIterators

public abstract class RowIterators
extends java.lang.Object

Static methods to work with row iterators.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static void`	`digest(RowIterator iterator, Digest digest)`
`static RowIterator`	`loggingIterator(RowIterator iterator, java.lang.String id)`	Wraps the provided iterator so it logs the returned rows for debugging purposes.
`static RowIterator`	`withOnlyQueriedData(RowIterator iterator, ColumnFilter filter)`	Filter the provided iterator to only include cells that are selected by the user.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - digest
```
public static void digest(RowIterator iterator,
                          Digest digest)
```
  - withOnlyQueriedData
```
public static RowIterator withOnlyQueriedData(RowIterator iterator,
                                              ColumnFilter filter)
```
    Filter the provided iterator to only include cells that are selected by the user.
    
    Parameters:
    
    iterator - the iterator to filter.
    
    filter - the ColumnFilter to use when deciding which cells are queried by the user. This should be the filter that was used when querying iterator.
    
    Returns:
    
    the filtered iterator..
  - loggingIterator
```
public static RowIterator loggingIterator(RowIterator iterator,
                                          java.lang.String id)
```
    Wraps the provided iterator so it logs the returned rows for debugging purposes.
    Note that this is only meant for debugging as this can log a very large amount of logging at INFO.