infovis.column
Class ColumnIterator

java.lang.Object
  infovis.utils.AbstractRowIterator
      infovis.utils.TableIterator
          infovis.column.ColumnIterator

All Implemented Interfaces:

RowIterator, Iterator

public class ColumnIterator
extends TableIterator

Iterator over a column.

Version:

$Revision: 1.3 $

Author:

Jean-Daniel Fekete

Constructor Summary

ColumnIterator(Column c, int first, int end, boolean up)
Creates a column iterator given a first and last index and a direction.

Method Summary

int	nextRow() Returns the next row after incrementing the iterator.
int	peekRow() Returns the next row without incrementing the iterator.
void	remove()

Methods inherited from class infovis.utils.TableIterator

copy, hasNext

Methods inherited from class infovis.utils.AbstractRowIterator

next

Methods inherited from class java.lang.Object

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

Constructor Detail

ColumnIterator

public ColumnIterator(Column c,
                      int first,
                      int end,
                      boolean up)

Creates a column iterator given a first and last index and a direction.

Parameters:

c - the column

first - the first index (inclusive)

end - the end index (exclusive)

up - the direction: true for up and false for down.

Method Detail

nextRow

public int nextRow()

Returns the next row after incrementing the iterator.

Specified by:

nextRow in interface RowIterator

Overrides:

nextRow in class TableIterator

Returns:

the next row.

peekRow

public int peekRow()

Returns the next row without incrementing the iterator.

Specified by:

peekRow in interface RowIterator

Overrides:

peekRow in class TableIterator

Returns:

the next row.

remove

public void remove()

Specified by:

remove in interface Iterator

Overrides:

remove in class TableIterator