Package org.apache.tinkerpop.gremlin.structure.io

Class GraphMigrator

java.lang.Object

org.apache.tinkerpop.gremlin.structure.io.GraphMigrator

public final class GraphMigrator
extends Object

GraphMigrator takes the data in one graph and pipes it to another graph. Uses the GryoReader and GryoWriter by default. Note that this utility is meant as a convenience for "small" graph migrations.

Author:

Alex Averbuch (alex.averbuch@gmail.com), Stephen Mallette (http://stephen.genoprime.com)

Method Summary

Modifier and Type	Method	Description
static void	migrateGraph(Graph fromGraph, Graph toGraph)	Use Gryo to pipe the data from one graph to another graph.
static void	migrateGraph(Graph fromGraph, Graph toGraph, GraphReader reader, GraphWriter writer)	Pipe the data from one graph to another graph.

Methods inherited from class java.lang.Object

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

Method Details

migrateGraph

public static void migrateGraph(Graph fromGraph,
 Graph toGraph)
                         throws IOException

Use Gryo to pipe the data from one graph to another graph. Uses readers and writers generated from each Graph via the Graph.io(Io.Builder) method.

Throws:

IOException

migrateGraph

public static void migrateGraph(Graph fromGraph,
 Graph toGraph,
 GraphReader reader,
 GraphWriter writer)
                         throws IOException

Pipe the data from one graph to another graph. It is important that the reader and writer utilize the same format.

Parameters:

fromGraph - the graph to take data from.

toGraph - the graph to take data to.

reader - reads from the graph written by the writer.

writer - writes the graph to be read by the reader.

Throws:

IOException - thrown if there is an error in steam between the two graphs.