com.google.cloud.dataflow.sdk.util.common

Class ElementByteSizeObservableIterable<V,InputT extends ElementByteSizeObservableIterator<V>>

java.lang.Object

com.google.cloud.dataflow.sdk.util.common.ElementByteSizeObservableIterable<V,InputT>

Type Parameters:

V - the type of elements returned by this iterable

InputT - type type of iterator returned by this iterable

All Implemented Interfaces:

Iterable<V>

public abstract class ElementByteSizeObservableIterable<V,InputT extends ElementByteSizeObservableIterator<V>>
extends Object
implements Iterable<V>

An abstract class used for iterables that notify observers about size in bytes of their elements, as they are being iterated over.

Constructor Summary

Constructors

Constructor and Description
ElementByteSizeObservableIterable()

Method Summary

Modifier and Type	Method and Description
void	addObserver(Observer observer) Sets the observer, which will observe the iterator returned in the next call to iterator() method.
protected abstract InputT	createIterator() Derived classes override this method to return an iterator for this iterable.
InputT	iterator() Returns a new iterator for this iterable.

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

Constructor Detail

ElementByteSizeObservableIterable

public ElementByteSizeObservableIterable()

Method Detail

createIterator

protected abstract InputT createIterator()

Derived classes override this method to return an iterator for this iterable.

addObserver

public void addObserver(Observer observer)

Sets the observer, which will observe the iterator returned in the next call to iterator() method. Future calls to iterator() won't be observed, unless an observer is set again.

iterator

public InputT iterator()

Returns a new iterator for this iterable. If an observer was set in a previous call to setObserver(), it will observe the iterator returned.

Specified by:

iterator in interface Iterable<V>