org.apache.tinkerpop.gremlin.structure.io.graphson

Class GraphSONReader.Builder

java.lang.Object

org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONReader.Builder

All Implemented Interfaces:

GraphReader.ReaderBuilder<GraphSONReader>

Enclosing class:

GraphSONReader

public static final class GraphSONReader.Builder
extends Object
implements GraphReader.ReaderBuilder<GraphSONReader>

Method Summary

Modifier and Type	Method and Description
GraphSONReader.Builder	batchSize(long batchSize) Number of mutations to perform before a commit is executed when using GraphSONReader.readGraph(InputStream, Graph).
GraphSONReader	create() Creates the GraphReader implementation given options provided to the GraphReader.ReaderBuilder implementation.
GraphSONReader.Builder	mapper(Mapper<ObjectMapper> mapper) Override all of the GraphSONMapper builder options with this mapper.
GraphSONReader.Builder	unwrapAdjacencyList(boolean unwrapAdjacencyList) If the adjacency list is wrapped in a JSON object, as is done when writing a graph with GraphSONWriter.Builder.wrapAdjacencyList set to true, this setting needs to be set to true to properly read it.

Methods inherited from class java.lang.Object

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

Method Detail

batchSize

public GraphSONReader.Builder batchSize(long batchSize)

Number of mutations to perform before a commit is executed when using GraphSONReader.readGraph(InputStream, Graph).

mapper

public GraphSONReader.Builder mapper(Mapper<ObjectMapper> mapper)

Override all of the GraphSONMapper builder options with this mapper. If this value is set to something other than null then that value will be used to construct the writer.

unwrapAdjacencyList

public GraphSONReader.Builder unwrapAdjacencyList(boolean unwrapAdjacencyList)

If the adjacency list is wrapped in a JSON object, as is done when writing a graph with GraphSONWriter.Builder.wrapAdjacencyList set to true, this setting needs to be set to true to properly read it. By default, this value is false and the adjacency list is simply read as line delimited vertices.

By setting this value to true, the generated JSON is no longer "splittable" by line and thus not suitable for OLAP processing. Furthermore, reading this format of the JSON with GraphSONReader.readGraph(InputStream, Graph) or GraphSONReader.readVertices(InputStream, Function, Function, Direction) requires that the entire JSON object be read into memory, so it is best saved for "small" graphs.

create

public GraphSONReader create()

Description copied from interface: GraphReader.ReaderBuilder

Creates the GraphReader implementation given options provided to the GraphReader.ReaderBuilder implementation.

Specified by:

create in interface GraphReader.ReaderBuilder<GraphSONReader>