edu.umass.cs.mallet.base.pipe
Class Noop

java.lang.Object
  extended byedu.umass.cs.mallet.base.pipe.Pipe
      extended byedu.umass.cs.mallet.base.pipe.Noop
All Implemented Interfaces:
java.io.Serializable

public class Noop
extends Pipe
implements java.io.Serializable

A pipe that does nothing to the instance fields but which has side effects on the dictionary.

See Also:
Serialized Form

Constructor Summary
Noop()
           
Noop(Alphabet dataDict, Alphabet targetDict)
           
Noop(java.lang.Class dataDictClass, java.lang.Class targetDictClass)
          Pass through input without change, but force the creation of Alphabet's, so it can be shared by future DictionariedPipe's.
 
Method Summary
 Instance pipe(Instance carrier)
          Process an Instance.
 
Methods inherited from class edu.umass.cs.mallet.base.pipe.Pipe
getDataAlphabet, getInstanceId, getParent, getParentRoot, getTargetAlphabet, isDataAlphabetSet, isTargetProcessing, pipe, readResolve, resolveDataAlphabet, resolveTargetAlphabet, setDataAlphabet, setParent, setTargetAlphabet, setTargetProcessing
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Noop

public Noop()

Noop

public Noop(java.lang.Class dataDictClass,
            java.lang.Class targetDictClass)
Pass through input without change, but force the creation of Alphabet's, so it can be shared by future DictionariedPipe's. You might want to use this before ParallelPipes where the previous pipes do not need dictionaries, but later steps in each parallel path do, and they all must share the same dictionary.


Noop

public Noop(Alphabet dataDict,
            Alphabet targetDict)
Method Detail

pipe

public Instance pipe(Instance carrier)
Description copied from class: Pipe
Process an Instance. This method takes an input Instance, destructively modifies it in some way, and returns it. This is the method by which all pipes are eventually run.

One can create a new concrete subclass of Pipe simply by implementing this method.

Specified by:
pipe in class Pipe
Parameters:
carrier - Instance to be processed.