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

Class FileElementFetcher<T extends org.apache.hugegraph.structure.GraphElement>

java.lang.Object

org.apache.hugegraph.computer.core.input.loader.FileElementFetcher<T>

All Implemented Interfaces:

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

Direct Known Subclasses:

FileEdgeFetcher, FileVertxFetcher

public abstract class FileElementFetcher<T extends org.apache.hugegraph.structure.GraphElement>
extends java.lang.Object
implements ElementFetcher<T>

Constructor Summary

Constructors

Constructor	Description
FileElementFetcher(org.apache.hugegraph.computer.core.config.Config config)

Method Summary

Modifier and Type	Method	Description
protected java.util.List<T>	buildElement(org.apache.hugegraph.loader.reader.line.Line line, org.apache.hugegraph.loader.builder.ElementBuilder<T> builder)
void	close()
protected abstract java.util.List<org.apache.hugegraph.loader.builder.ElementBuilder<T>>	elementBuilders(org.apache.hugegraph.loader.executor.LoadContext context, org.apache.hugegraph.loader.mapping.InputStruct struct)
boolean	hasNext()
T	next()
void	prepareLoadInputSplit(InputSplit split)	Set the current input split meta information to be loaded

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

FileElementFetcher

public FileElementFetcher(org.apache.hugegraph.computer.core.config.Config config)

Method Detail

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 extends org.apache.hugegraph.structure.GraphElement>

Parameters:

split - current input split meta

hasNext

public boolean hasNext()

Specified by:

hasNext in interface java.util.Iterator<T extends org.apache.hugegraph.structure.GraphElement>

next

public T next()

Specified by:

next in interface java.util.Iterator<T extends org.apache.hugegraph.structure.GraphElement>

buildElement

protected java.util.List<T> buildElement(org.apache.hugegraph.loader.reader.line.Line line,
                                         org.apache.hugegraph.loader.builder.ElementBuilder<T> builder)

elementBuilders

protected abstract java.util.List<org.apache.hugegraph.loader.builder.ElementBuilder<T>> elementBuilders(org.apache.hugegraph.loader.executor.LoadContext context,
                                                                                                         org.apache.hugegraph.loader.mapping.InputStruct struct)

close

public void close()