com.hrstc.trec
Class ColumnExtractor

java.lang.Object
  com.hrstc.trec.ColumnExtractor

public class ColumnExtractor
extends java.lang.Object

ColumnExtractor.java Created on November 3, 2004, 8:41 AM Extracts specified columns from a file regular args: queries_even.txt.result 4 5 6 7 8 9 10 lucene args: queries.txt.result 4 5 6 7 8 9 10 desc run args:

Author:

Neil O. Rouben

Constructor Summary

ColumnExtractor()
Creates a new instance of ColumnExtractor

Method Summary

private java.lang.String	extractColumns(java.lang.String str, int fromIdx) Extract columns range
private java.lang.String	extractColumns(java.lang.String str, java.lang.String[] args) Extracts specific columns
static void	main(java.lang.String[] args) Extracts specific columns; if there are only 2 args extracts columns starting with args[1]
void	process(java.lang.String[] args) Extracts specific columns; if there are only 2 args extracts columns starting with args[1]

Methods inherited from class java.lang.Object

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

Constructor Detail

ColumnExtractor

public ColumnExtractor()

Creates a new instance of ColumnExtractor

Method Detail

process

public void process(java.lang.String[] args)
             throws java.io.IOException

Extracts specific columns; if there are only 2 args extracts columns starting with args[1]

Parameters:

args -

Throws:

java.io.IOException

extractColumns

private java.lang.String extractColumns(java.lang.String str,
                                        java.lang.String[] args)

Extracts specific columns

Parameters:

str -

args - - from main

Returns:

extractColumns

private java.lang.String extractColumns(java.lang.String str,
                                        int fromIdx)

Extract columns range

Parameters:

str -

fromIdx - - inclusive 1 based

Returns:

main

public static void main(java.lang.String[] args)
                 throws java.io.IOException

Extracts specific columns; if there are only 2 args extracts columns starting with args[1]

Parameters:

args - fileName col0 col2 (columns are 0 based)

Throws:

java.io.IOException