olg.csv.base
Class IgnoreNullReader

java.lang.Object
  olg.csv.base.IgnoreNullReader

All Implemented Interfaces:

Closeable, Iterator<Row>, IReader

public class IgnoreNullReader
extends Object
implements IReader

A "Proxy" reader which Provides a mecanism to skip empty row.

Field Summary

private Row	currentRow the last row retrieved from the original reader.
private ReaderException	exception because next() method even if returns the next element, loads the following row.
private static org.slf4j.Logger	LOGGER The class logger.
private boolean	next
private IReader	reader the original reader.

Constructor Summary

IgnoreNullReader(IReader reader)

Method Summary

void	close() close the original reader.
boolean	hasNext()
boolean	isWithHeaders() Indicates if the file has a headers line.
Row	next()
void	remove() Throws UnsupportedOperationException.
private Row	setNext()

Methods inherited from class java.lang.Object

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

Field Detail

LOGGER

private static final org.slf4j.Logger LOGGER

The class logger.

reader

private final IReader reader

the original reader.

currentRow

private Row currentRow

the last row retrieved from the original reader.

next

private boolean next

exception

private ReaderException exception

because next() method even if returns the next element, loads the following row. During loading the following row a readException could occur. So we need to keep this exception to throw it on the following call of next() method.

Constructor Detail

IgnoreNullReader

public IgnoreNullReader(IReader reader)

Parameters:

reader - a concret reader

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<Row>

Returns:

true if exists a next not empty row.

next

public Row next()

Specified by:

next in interface Iterator<Row>

Returns:

the next not empty row.

setNext

private Row setNext()

Returns:

the next not empty row.

remove

public void remove()

Throws UnsupportedOperationException.

Specified by:

remove in interface Iterator<Row>

close

public void close()

close the original reader.

Specified by:

close in interface Closeable

isWithHeaders

public boolean isWithHeaders()

Description copied from interface: IReader

Indicates if the file has a headers line.

Specified by:

isWithHeaders in interface IReader

Returns:

the original withHeaders attribute.