de.unknownreality.dataframe.common.reader

Class BufferedStreamIterator<R extends Row>

java.lang.Object

de.unknownreality.dataframe.common.reader.BufferedStreamIterator<R>

All Implemented Interfaces:

Iterator<R>

Direct Known Subclasses:

CSVIterator

public abstract class BufferedStreamIterator<R extends Row>
extends Object
implements Iterator<R>

Created by Alex on 19.05.2017.

Constructor Summary

Constructors

Constructor and Description
BufferedStreamIterator(InputStream stream)

Method Summary

Modifier and Type	Method and Description
void	close() closes this iterator
protected String	getLine()
protected abstract R	getNext() Reads the csv input stream and returns a row
boolean	hasNext() Returns true if last row is not reached yet
protected void	loadNext()
R	next() Returns the next row.
void	remove() Remove is not supported
void	skip(int rows) skips rows

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Constructor Detail

BufferedStreamIterator

public BufferedStreamIterator(InputStream stream)

Method Detail

loadNext

protected void loadNext()

getLine

protected String getLine()
                  throws IOException

Throws:

IOException

skip

public void skip(int rows)

skips rows

Parameters:

rows - number of rows to be skipped

close

public void close()

closes this iterator

getNext

protected abstract R getNext()

Reads the csv input stream and returns a row

Returns:

next row

hasNext

public boolean hasNext()

Returns true if last row is not reached yet

Specified by:

hasNext in interface Iterator<R extends Row>

Returns:

true if next row exists

next

public R next()

Returns the next row. If last row is reached this iterator closes automatically.

Specified by:

next in interface Iterator<R extends Row>

Returns:

next row

remove

public void remove()

Remove is not supported

Specified by:

remove in interface Iterator<R extends Row>