uk.ac.starlink.ttools.calc

Class ColumnCalculatorFilter<S>

java.lang.Object

uk.ac.starlink.ttools.filter.BasicFilter

uk.ac.starlink.ttools.calc.ColumnCalculatorFilter<S>

All Implemented Interfaces:

ProcessingFilter

Direct Known Subclasses:

SchlegelFilter

public abstract class ColumnCalculatorFilter<S>
extends BasicFilter

ProcessingFilter implementation superclass which adds to a table columns produced by a ColumnCalculator.

Since:

14 Oct 2011

Author:

Mark Taylor

Constructor Summary

Constructors

Constructor and Description
ColumnCalculatorFilter(String name, String usage, ColumnCalculator<S> calc) Constructor.

Method Summary

Modifier and Type	Method and Description
protected ProcessingStep	createCalcStep(String[] tupleExpressions, S spec) Creates a processing step given a list of JEL expressions corresponding to the input tuple values for a table, and a calculation specification object

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

explainSyntax, getDescription, getDescriptionLines, getName, getUsage

Methods inherited from class java.lang.Object

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

Methods inherited from interface uk.ac.starlink.ttools.filter.ProcessingFilter

createStep

Constructor Detail

ColumnCalculatorFilter

public ColumnCalculatorFilter(String name,
                              String usage,
                              ColumnCalculator<S> calc)

Constructor.

Parameters:

name - filter name

usage - filter usage

calc - column calculator to produce results

Method Detail

createCalcStep

protected ProcessingStep createCalcStep(String[] tupleExpressions,
                                        S spec)

Creates a processing step given a list of JEL expressions corresponding to the input tuple values for a table, and a calculation specification object

Parameters:

tupleExpressions - JEL expressions giving input tuple values

spec - calculator-specific specification object