Package org.apache.hugegraph.computer.core.input.hg

Class HugeElementFetcher<T>

java.lang.Object

org.apache.hugegraph.computer.core.input.hg.HugeElementFetcher<T>

All Implemented Interfaces:

java.util.Iterator<T>, ElementFetcher<T>

Direct Known Subclasses:

HugeEdgeFetcher, HugeVertexFetcher

public abstract class HugeElementFetcher<T>
extends java.lang.Object
implements ElementFetcher<T>

Constructor Summary

Constructors

Constructor	Description
HugeElementFetcher(org.apache.hugegraph.computer.core.config.Config config, org.apache.hugegraph.driver.HugeClient client)

Method Summary

Modifier and Type	Method	Description
protected org.apache.hugegraph.driver.HugeClient	client()
protected org.apache.hugegraph.computer.core.config.Config	config()
abstract java.util.Iterator<T>	fetch(InputSplit split)
boolean	hasNext()
T	next()
protected int	pageSize()
void	prepareLoadInputSplit(InputSplit split)	Set the current input split meta information to be loaded
static org.apache.hugegraph.structure.graph.Shard	toShard(InputSplit split)

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining, remove

Constructor Detail

HugeElementFetcher

public HugeElementFetcher(org.apache.hugegraph.computer.core.config.Config config,
                          org.apache.hugegraph.driver.HugeClient client)

Method Detail

config

protected org.apache.hugegraph.computer.core.config.Config config()

client

protected org.apache.hugegraph.driver.HugeClient client()

pageSize

protected int pageSize()

prepareLoadInputSplit

public void prepareLoadInputSplit(InputSplit split)

Description copied from interface: ElementFetcher

Set the current input split meta information to be loaded

Specified by:

prepareLoadInputSplit in interface ElementFetcher<T>

Parameters:

split - current input split meta

hasNext

public boolean hasNext()

Specified by:

hasNext in interface java.util.Iterator<T>

next

public T next()

Specified by:

next in interface java.util.Iterator<T>

fetch

public abstract java.util.Iterator<T> fetch(InputSplit split)

toShard

public static org.apache.hugegraph.structure.graph.Shard toShard(InputSplit split)