uk.ac.starlink.ttools.jel

Class DummyJELRowReader

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 and Description
DummyJELRowReader(StarTable baseTable) Constructor.

Method Summary

Modifier and Type	Method and Description
protected 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, getDescribedValueByName, getDoubleColumnValue, getFloatColumnValue, getIntColumnValue, getLongColumnValue, getObjectColumnValue, getShortColumnValue, getSpecialByName, getTable, getUcdRegex, getUtypeRegex, isBlank, requiresRowIndex, valueDouble, valueInt, valueLong, valueObject, valueString

Methods inherited from class uk.ac.starlink.ttools.jel.JELRowReader

evaluate, evaluateBoolean, evaluateDouble, foundNull, getBooleanArrayProperty, getBooleanProperty, getBooleanProperty, getBooleanValue, getByteArrayProperty, getByteProperty, getByteValue, getCharArrayProperty, getCharProperty, getCharValue, getColumnIndex, getDateArrayProperty, getDoubleArrayProperty, getDoubleProperty, getDoubleValue, getFloatArrayProperty, getFloatProperty, getFloatValue, getIntArrayProperty, getIntProperty, getIntValue, getLongArrayProperty, getLongProperty, getLongValue, getNumberProperty, getObjectArrayProperty, getObjectProperty, getShortArrayProperty, getShortProperty, getShortValue, getStringArrayProperty, getStringProperty, getTranslatedColumns, getTranslatedConstants, getTypeName, setFailOnNull, stripPrefix, translate

Methods inherited from class java.lang.Object

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

Constructor Detail

DummyJELRowReader

public DummyJELRowReader(StarTable baseTable)

Constructor.

Parameters:

baseTable - table whose columns this reader will be based on

Method Detail

getCell

protected 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)