cascading.pipe.assembly
Class Discard

java.lang.Object
  cascading.pipe.Pipe
      cascading.pipe.SubAssembly
          cascading.pipe.assembly.Discard

All Implemented Interfaces:

FlowElement, Serializable

public class Discard
extends SubAssembly

Class Discard is a SubAssembly that will retain all incoming fields except those given on the constructor.

Use this pipe to narrow a stream of tuples, removing unused data.

See Also:

Retain, Serialized Form

Field Summary

Fields inherited from class cascading.pipe.Pipe

configDef, name, parent, stepConfigDef

Constructor Summary

Discard(Pipe previous, Fields discardFields)

Method Summary

Methods inherited from class cascading.pipe.SubAssembly

getName, getPrevious, getTailNames, getTails, setPrevious, setTails, unwind

Methods inherited from class cascading.pipe.Pipe

equals, getConfigDef, getHeads, getParent, getStepConfigDef, getTrace, hasConfigDef, hashCode, hasStepConfigDef, id, isEquivalentTo, named, names, outgoingScopeFor, pipes, print, printInternal, resolveIncomingOperationArgumentFields, resolveIncomingOperationPassThroughFields, setParent, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Discard

@ConstructorProperties(value={"previous","discardFields"})
public Discard(Pipe previous,
                                          Fields discardFields)