Package org.springframework.batch.item.support

Class IteratorItemReader<T>

java.lang.Object

org.springframework.batch.item.support.IteratorItemReader<T>

All Implemented Interfaces:

ItemReader<T>

public class IteratorItemReader<T>
extends Object
implements ItemReader<T>

An ItemReader that pulls data from a Iterator or Iterable using the constructors.

Author:

Juliusz Brzostek, Dave Syer, Mahmoud Ben Hassine

Constructor Summary

Constructors

Constructor	Description
IteratorItemReader(Iterable<T> iterable)	Construct a new reader from this iterable (could be a collection), by extracting an instance of Iterator from it.
IteratorItemReader(Iterator<T> iterator)	Construct a new reader from this iterator directly.

Method Summary

Modifier and Type	Method	Description
T	read()	Implementation of ItemReader.read() that just iterates over the iterator provided.

Methods inherited from class java.lang.Object

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

Constructor Details

IteratorItemReader

public IteratorItemReader(Iterable<T> iterable)

Construct a new reader from this iterable (could be a collection), by extracting an instance of Iterator from it.

Parameters:

iterable - in instance of Iterable

See Also:

• Iterable.iterator()

IteratorItemReader

public IteratorItemReader(Iterator<T> iterator)

Construct a new reader from this iterator directly.

Parameters:

iterator - an instance of Iterator

Method Details

read

@Nullable
public T read()

Implementation of ItemReader.read() that just iterates over the iterator provided.

Specified by:

read in interface ItemReader<T>

Returns:

T the item to be processed or null if the data source is exhausted