org.apache.flink.runtime.operators.util.metrics

Class CountingMutableObjectIterator<IN>

java.lang.Object

org.apache.flink.runtime.operators.util.metrics.CountingMutableObjectIterator<IN>

All Implemented Interfaces:

MutableObjectIterator<IN>

public class CountingMutableObjectIterator<IN>
extends Object
implements MutableObjectIterator<IN>

Constructor Summary

Constructors

Constructor and Description
CountingMutableObjectIterator(MutableObjectIterator<IN> iterator, Counter numRecordsIn)

Method Summary

Modifier and Type	Method and Description
IN	next() Gets the next element from the collection.
IN	next(IN reuse) Gets the next element from the collection.

Methods inherited from class java.lang.Object

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

Constructor Detail

CountingMutableObjectIterator

public CountingMutableObjectIterator(MutableObjectIterator<IN> iterator,
                                     Counter numRecordsIn)

Method Detail

next

public IN next(IN reuse)
        throws IOException

Description copied from interface: MutableObjectIterator

Gets the next element from the collection. The contents of that next element is put into the given reuse object, if the type is mutable.

Specified by:

next in interface MutableObjectIterator<IN>

Parameters:

reuse - The target object into which to place next element if E is mutable.

Returns:

The filled object or null if the iterator is exhausted.

Throws:

IOException - Thrown, if a problem occurred in the underlying I/O layer or in the serialization / deserialization logic

next

public IN next()
        throws IOException

Description copied from interface: MutableObjectIterator

Gets the next element from the collection. The iterator implementation must obtain a new instance.

Specified by:

next in interface MutableObjectIterator<IN>

Returns:

The object or null if the iterator is exhausted.

Throws:

IOException - Thrown, if a problem occurred in the underlying I/O layer or in the serialization / deserialization logic