edu.umass.cs.mallet.base.pipe

Class Directory2FileIterator

java.lang.Object

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

edu.umass.cs.mallet.base.pipe.Directory2FileIterator

All Implemented Interfaces:

Serializable

public class Directory2FileIterator
extends Pipe

Convert a File object representing a directory into a FileIterator which iterates over files in the directory matching a pattern and which extracts a label from each file path to become the target field of the instance.

Author:

Andrew McCallum mccallum@cs.umass.edu

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Directory2FileIterator()
Directory2FileIterator(FileFilter fileFilter, Pattern labelRegex)
Directory2FileIterator(Pattern absolutePathRegex, Pattern filenameRegex, Pattern labelRegex)
Directory2FileIterator(String filenameRegex)

Method Summary

Modifier and Type	Method and Description
Iterator	pipe(File directory)
Instance	pipe(Instance carrier) Process an Instance.
Iterator	pipe(String directory)
Iterator	pipe(URI directory)

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

Directory2FileIterator

public Directory2FileIterator(FileFilter fileFilter,
                              Pattern labelRegex)

Directory2FileIterator

public Directory2FileIterator(Pattern absolutePathRegex,
                              Pattern filenameRegex,
                              Pattern labelRegex)

Directory2FileIterator

public Directory2FileIterator(String filenameRegex)

Directory2FileIterator

public Directory2FileIterator()

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.

pipe

public Iterator pipe(File directory)

pipe

public Iterator pipe(URI directory)

pipe

public Iterator pipe(String directory)