DummyJELRowReader (Starjava TTOOLS API)

java.lang.Object
- gnu.jel.DVMap
- - uk.ac.starlink.ttools.jel.JELRowReader
  - - uk.ac.starlink.ttools.jel.StarTableJELRowReader
    - - uk.ac.starlink.ttools.jel.DummyJELRowReader

```
public class DummyJELRowReader
extends StarTableJELRowReader
```
JELRowReader which can't actually read any rows. It's only good for identifying columns, checking or evaluating JEL expressions in a per-table (not per-row) context, etc.

Since:

3 Mar 2005

Author:

Mark Taylor (Starlink)

Field Summary
- Fields inherited from class uk.ac.starlink.ttools.jel.StarTableJELRowReader
  PARAM_PREFIX, UCD_PREFIX, UTYPE_PREFIX
- Fields inherited from class uk.ac.starlink.ttools.jel.JELRowReader
  COLUMN_ID_CHAR, NULL_QUERY_PREFIX, OBJECT_PREFIX

Constructor Summary

Constructors
Constructor Description

DummyJELRowReader(uk.ac.starlink.table.StarTable baseTable)
Constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected java.lang.Object`	`getCell(int icol)`	Throws UnsupportedOperationException.
`long`	`getCurrentRow()`	Returns the index of the row on which evaluations are currently taking place.

Methods inherited from class uk.ac.starlink.ttools.jel.StarTableJELRowReader
createDescribedValueConstant, getBooleanColumnValue, getByteColumnValue, getCharColumnValue, getColumnClass, getColumnIndexByName, getConstantByName, getDoubleColumnValue, getFloatColumnValue, getIntColumnValue, getLongColumnValue, getObjectColumnValue, getShortColumnValue, getSpecialByName, getTable, getUcdRegex, getUtypeRegex, isBlank, requiresRowIndex

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - DummyJELRowReader
```
public DummyJELRowReader(uk.ac.starlink.table.StarTable baseTable)
```
    Constructor.
    
    Parameters:
    
    baseTable - table whose columns this reader will be based on
- Method Detail
  - getCell
```
protected java.lang.Object getCell(int icol)
```
    Throws UnsupportedOperationException.
    
    Specified by:
    
    getCell in class StarTableJELRowReader
    
    Parameters:
    
    icol - column index
    
    Returns:
    
    contents of column icol at the current row
  - getCurrentRow
```
public long getCurrentRow()
```
    Description copied from class: StarTableJELRowReader
    
    Returns the index of the row on which evaluations are currently taking place.
    
    Specified by:
    
    getCurrentRow in class StarTableJELRowReader
    
    Returns:
    
    row index (first row is 0)