ColumnCalculatorFilter (Starjava TTOOLS API)

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Summary:
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Field |
Constr |
Method

Detail:
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Constr |
Method

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	Description
`ColumnCalculatorFilter(java.lang.String name, java.lang.String usage, ColumnCalculator<S> calc)`	Constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected ProcessingStep`	`createCalcStep(java.lang.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(java.lang.String name,
                              java.lang.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(java.lang.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

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