org.knime.base.data.filter.column
Class FilterColumnRow

java.lang.Object
  org.knime.base.data.filter.column.FilterColumnRow

All Implemented Interfaces:

Iterable<DataCell>, DataRow

public final class FilterColumnRow
extends Object
implements DataRow

Filter DataRow which extracts particular cells (columns) from an underlying row.

Author:

Thomas Gabriel, University of Konstanz

Constructor Summary

FilterColumnRow(DataRow row, int[] columns)
Inits a new filter column DataRow with the underling row and an array of indices into this row.

Method Summary

DataCell	getCell(int index) Returns the data cell at the given index.
RowKey	getKey() Returns the row key.
int	getNumCells() Returns the length of this row, that is the number of columns of the DataTable (not including the row key).
Iterator<DataCell>	iterator()

Methods inherited from class java.lang.Object

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

Constructor Detail

FilterColumnRow

public FilterColumnRow(DataRow row,
                       int[] columns)

Inits a new filter column DataRow with the underling row and an array of indices into this row.

Parameters:

row - the underlying DataRow

columns - the array of column indices to keep

Method Detail

getNumCells

public int getNumCells()

Returns the length of this row, that is the number of columns of the DataTable (not including the row key).

Specified by:

getNumCells in interface DataRow

Returns:

length of this row

getKey

public RowKey getKey()

Returns the row key.

Specified by:

getKey in interface DataRow

Returns:

the row key

getCell

public DataCell getCell(int index)

Returns the data cell at the given index.

Specified by:

getCell in interface DataRow

Parameters:

index - the column index inside the row

Returns:

the data cell for index

Throws:

ArrayIndexOutOfBoundsException - if the index is out of range

iterator

public Iterator<DataCell> iterator()

Specified by:

iterator in interface Iterable<DataCell>