edu.umass.cs.mallet.base.pipe

Class IteratingPipe

java.lang.Object

edu.umass.cs.mallet.base.pipe.Pipe

edu.umass.cs.mallet.base.pipe.IteratingPipe

All Implemented Interfaces:

Serializable

public class IteratingPipe
extends Pipe
implements Serializable

Converts the iterator in the data field to a PipeOutputAccumulation of the values spanned by the iterator.

Author:

Andrew McCallum mccallum@cs.umass.edu

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
IteratingPipe(Pipe iteratedPipe)
IteratingPipe(PipeOutputAccumulator accumulator, Pipe iteratedPipe)

Method Summary

Modifier and Type	Method and Description
static PipeOutputAccumulator	iteratePipe(Pipe iteratedPipe, PipeOutputAccumulator accumulator, Instance carrier)
Instance	pipe(Instance carrier) Process an Instance.
protected Alphabet	resolveDataAlphabet()
protected Alphabet	resolveTargetAlphabet()
void	setTargetProcessing(boolean lookForAndProcessTarget) Set whether input is taken from target field of instance during processing.

Methods inherited from class edu.umass.cs.mallet.base.pipe.Pipe

getDataAlphabet, getInstanceId, getParent, getParentRoot, getTargetAlphabet, isDataAlphabetSet, isTargetProcessing, pipe, readResolve, setDataAlphabet, setParent, setTargetAlphabet

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

IteratingPipe

public IteratingPipe(PipeOutputAccumulator accumulator,
                     Pipe iteratedPipe)

IteratingPipe

public IteratingPipe(Pipe iteratedPipe)

Method Detail

setTargetProcessing

public void setTargetProcessing(boolean lookForAndProcessTarget)

Description copied from class: Pipe

Set whether input is taken from target field of instance during processing. If argument is false, don't expect to find input material for the target. By default, this is true.

Overrides:

setTargetProcessing in class Pipe

resolveDataAlphabet

protected Alphabet resolveDataAlphabet()

Overrides:

resolveDataAlphabet in class Pipe

resolveTargetAlphabet

protected Alphabet resolveTargetAlphabet()

Overrides:

resolveTargetAlphabet in class Pipe

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.

iteratePipe

public static PipeOutputAccumulator iteratePipe(Pipe iteratedPipe,
                                                PipeOutputAccumulator accumulator,
                                                Instance carrier)