org.apache.hama.graph

Class IDSkippingIterator<V extends org.apache.hadoop.io.WritableComparable,E extends org.apache.hadoop.io.Writable,M extends org.apache.hadoop.io.Writable>

java.lang.Object

org.apache.hama.graph.IDSkippingIterator<V,E,M>

public abstract class IDSkippingIterator<V extends org.apache.hadoop.io.WritableComparable,E extends org.apache.hadoop.io.Writable,M extends org.apache.hadoop.io.Writable>
extends Object

Iterator that allows skipping of items on disk based on some given stategy.

Constructor Summary

Constructors

Constructor and Description
IDSkippingIterator()

Method Summary

Methods

Modifier and Type	Method and Description
boolean	hasNext() Skips nothing, accepts everything.
abstract boolean	hasNext(V e, org.apache.hama.graph.IDSkippingIterator.Strategy strat) Skips until the given strategy is satisfied.
abstract Vertex<V,E,M>	next()

Methods inherited from class java.lang.Object

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

Constructor Detail

IDSkippingIterator

public IDSkippingIterator()

Method Detail

hasNext

public boolean hasNext()
                throws IOException

Skips nothing, accepts everything.

Returns:

true if the strategy found a new item, false if not.

Throws:

IOException

hasNext

public abstract boolean hasNext(V e,
              org.apache.hama.graph.IDSkippingIterator.Strategy strat)
                         throws IOException

Skips until the given strategy is satisfied.

Returns:

true if the strategy found a new item, false if not.

Throws:

IOException

next

public abstract Vertex<V,E,M> next()

Returns:

a found vertex that can be read safely.