Package no.mnemonic.messaging.documentchannel.kafka

Class KafkaRangeIterator<T>

java.lang.Object

no.mnemonic.messaging.documentchannel.kafka.KafkaRangeIterator<T>

Type Parameters:

T - type of document to return

All Implemented Interfaces:

Iterable<KafkaDocument<T>>, Iterator<KafkaDocument<T>>

public class KafkaRangeIterator<T>
extends Object
implements Iterator<KafkaDocument<T>>, Iterable<KafkaDocument<T>>

This iterator implementation will return a range of documents from kafka, until the iterator reaches the cursor limit (for all partitions)

Constructor Summary

Constructors

Constructor	Description
KafkaRangeIterator(KafkaDocumentSource<T> source, String fromCursor, String toCursor)

Method Summary

Modifier and Type	Method	Description
boolean	hasNext()
Iterator<KafkaDocument<T>>	iterator()
KafkaDocument<T>	next()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Methods inherited from interface java.util.Iterator

forEachRemaining, remove

Constructor Details

KafkaRangeIterator

public KafkaRangeIterator(KafkaDocumentSource<T> source,
 String fromCursor,
 String toCursor)
                   throws KafkaInvalidSeekException,
InterruptedException

Parameters:

source - The kafka document source to read from. The source should be seeked to the proper start position.

fromCursor - a KafkaCursor string representing the start position to iterate from, as returned from a KafkaDocument.getCursor(). FromCursor MAY be null (will then iterate from the default starting point)

toCursor - a KafkaCursor string representing the end of the target range, as returned from a KafkaDocument.getCursor(). ToCursor MUST be set, or will throw IllegalArgumentException.

Throws:

KafkaInvalidSeekException

InterruptedException

Method Details

iterator

public Iterator<KafkaDocument<T>> iterator()

Specified by:

iterator in interface Iterable<T>

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<T>

next

public KafkaDocument<T> next()

Specified by:

next in interface Iterator<T>