com.cloudera.crunch.fn
Class CompositeMapFn<R,S,T>
java.lang.Object
com.cloudera.crunch.DoFn<S,T>
com.cloudera.crunch.MapFn<R,T>
com.cloudera.crunch.fn.CompositeMapFn<R,S,T>
- All Implemented Interfaces:
- Serializable
public class CompositeMapFn<R,S,T>
- extends MapFn<R,T>
- See Also:
- Serialized Form
Methods inherited from class com.cloudera.crunch.DoFn |
cleanup, configure, getConfiguration, getCounter, getCounter, getStatus, getTaskAttemptID, progress, setConfigurationForTest, setContext, setStatus |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
CompositeMapFn
public CompositeMapFn(MapFn<R,S> first,
MapFn<S,T> second)
initialize
public void initialize()
- Description copied from class:
DoFn
- Called during the setup of the MapReduce job this
DoFn
is associated with. Subclasses may override this method to
do appropriate initialization.
- Overrides:
initialize
in class DoFn<R,T>
getFirst
public MapFn<R,S> getFirst()
getSecond
public MapFn<S,T> getSecond()
map
public T map(R input)
- Description copied from class:
MapFn
- Maps the given input into an instance of the output type.
- Specified by:
map
in class MapFn<R,T>
Copyright © 2012. All Rights Reserved.