cascading.pipe.assembly
Class Rename

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

All Implemented Interfaces:

FlowElement, Serializable

public class Rename
extends SubAssembly

Class Rename is a SubAssembly that will rename the fromFields to the names in toFields.

Note that if any input field names are not given, they will retain their names.

See Also:

Serialized Form

Field Summary

Fields inherited from class cascading.pipe.Pipe

configDef, name, parent, stepConfigDef

Constructor Summary

Rename(Pipe previous, Fields fromFields, Fields toFields)
Rename the fromFields in the current Tuple to the given toFields.

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

Rename

@ConstructorProperties(value={"previous","fromFields","toFields"})
public Rename(Pipe previous,
                                         Fields fromFields,
                                         Fields toFields)

Rename the fromFields in the current Tuple to the given toFields.

 incoming: {"first", "middle", "last"} -> from:{"middle"} to:{"initial"} -> outgoing:{"first", "last", "initial"}
 

Parameters:

previous - of type Pipe

fromFields - of type Fields

toFields - of type Fields