uk.ac.starlink.ttools.filter

Class TransposeFilter

java.lang.Object

uk.ac.starlink.ttools.filter.BasicFilter

uk.ac.starlink.ttools.filter.TransposeFilter

All Implemented Interfaces:

ProcessingFilter

public class TransposeFilter
extends BasicFilter

Processing filter which transposes a table.

Since:

30 Jun 2006

Author:

Mark Taylor

Field Summary

Fields

Modifier and Type	Field and Description
static ColumnInfo	HEADING_INFO Metadata for column representing original column names.

Constructor Summary

Constructors

Constructor and Description
TransposeFilter() Constructor.

Method Summary

Modifier and Type	Method and Description
ProcessingStep	createStep(Iterator<String> argIt) Creates a new ProcessingStep based on a sequence of command-line arguments.
protected String[]	getDescriptionLines()

Methods inherited from class uk.ac.starlink.ttools.filter.BasicFilter

explainSyntax, getDescription, getName, getUsage

Methods inherited from class java.lang.Object

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

Field Detail

HEADING_INFO

public static final ColumnInfo HEADING_INFO

Metadata for column representing original column names.

Constructor Detail

TransposeFilter

public TransposeFilter()

Constructor.

Method Detail

getDescriptionLines

protected String[] getDescriptionLines()

Specified by:

getDescriptionLines in class BasicFilter

createStep

public ProcessingStep createStep(Iterator<String> argIt)
                          throws ArgException

Description copied from interface: ProcessingFilter

Creates a new ProcessingStep based on a sequence of command-line arguments. The argIt argument is an iterator over the command-line arguments positioned just before any arguments intended for this filter. If legal, any that can be comprehended by this filter should be read (iterated over) and removed, and a ProcessingStep should accordingly be returned. In the case of a successful return, it is essential that no arguments other than the ones intended for this filter are read from the iterator.

If the argument list is badly-formed as far as this filter is concerned, an ArgException should be thrown.

Parameters:

argIt - iterator over command-line arguments positioned at the first one

Throws:

ArgException