edu.upenn.cis.spinal
Class EchoWalker

java.lang.Object
  edu.upenn.cis.spinal.AbstractWalker
      edu.upenn.cis.spinal.EchoWalker

public class EchoWalker
extends AbstractWalker

Walks through a treebank, reads it in, and prints it to stdout unchanged. This class is provided as a simple example of an implementation of AbstractWalker. It can be used for debugging purposes when testing the toString() methods. This class can also print to file if that file is given as a second argument.

Author:

Lucas Champollion

Field Summary

Fields inherited from class edu.upenn.cis.spinal.AbstractWalker

args, terminate

Constructor Summary

EchoWalker()
Creates a new instance of EchoWalker.

Method Summary

void	forEachSentence(Sentence s) Implementations of this method should specify what the class should do on reading in a sentence (a derivation tree) from the file.
protected void	init() Implementations of this method should specify what (if anything) the class should do before attempting to read in a file.
static void	main(String[] argv) Main method, call from command line.
protected void	printUsage() Implementations of this method should print out a short string to stdout describing the function of the class.
protected void	wrapUp() Implementations of this method should specify what (if anything) the class should do upon reading all sentences from the file.

Methods inherited from class edu.upenn.cis.spinal.AbstractWalker

getArgs, process, terminate

Methods inherited from class java.lang.Object

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

Constructor Detail

EchoWalker

public EchoWalker()

Creates a new instance of EchoWalker.

Method Detail

init

protected void init()

Description copied from class: AbstractWalker

Implementations of this method should specify what (if anything) the class should do before attempting to read in a file.

Specified by:

init in class AbstractWalker

forEachSentence

public void forEachSentence(Sentence s)

Description copied from class: AbstractWalker

Implementations of this method should specify what the class should do on reading in a sentence (a derivation tree) from the file.

Specified by:

forEachSentence in class AbstractWalker

Parameters:

s - the current Sentence object

wrapUp

protected void wrapUp()

Description copied from class: AbstractWalker

Implementations of this method should specify what (if anything) the class should do upon reading all sentences from the file. The AbstractWalker.process(String[]) method also calls this if AbstractWalker.terminate() has been invoked.

Specified by:

wrapUp in class AbstractWalker

printUsage

protected void printUsage()

Description copied from class: AbstractWalker

Implementations of this method should print out a short string to stdout describing the function of the class. This method is automatically called by AbstractWalker.process(String[]) when no command-line argument is passed.

Specified by:

printUsage in class AbstractWalker

main

public static void main(String[] argv)

Main method, call from command line.

Parameters:

argv - the command line arguments