com.tinkerpop.gremlin.structure.io

Class GraphMigrator

java.lang.Object

com.tinkerpop.gremlin.structure.io.GraphMigrator

public final class GraphMigrator
extends java.lang.Object

GraphMigrator takes the data in one graph and pipes it to another graph. Uses the KryoReader and KryoWriter by default.

Author:

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

Constructor Summary

Constructors

Constructor and Description
GraphMigrator()

Method Summary

Modifier and Type	Method and Description
static void	migrateGraph(Graph fromGraph, Graph toGraph) Use Kryo 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

Constructor Detail

GraphMigrator

public GraphMigrator()

Method Detail

migrateGraph

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

Use Kryo to pipe the data from one graph to another graph. Uses all default settings for reader/writers. Refer to KryoReader and KryoWriter for those settings. To use features like incremental loading, construct the reader/writers manually and utilize migrateGraph(com.tinkerpop.gremlin.structure.Graph, com.tinkerpop.gremlin.structure.Graph, GraphReader, GraphWriter)

Throws:

java.io.IOException

migrateGraph

public static void migrateGraph(Graph fromGraph,
                                Graph toGraph,
                                GraphReader reader,
                                GraphWriter writer)
                         throws java.io.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:

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