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

Class GraphSONWriter.Builder

java.lang.Object

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

All Implemented Interfaces:

GraphWriter.WriterBuilder<GraphSONWriter>

Enclosing class:

GraphSONWriter

public static class GraphSONWriter.Builder
extends Object
implements GraphWriter.WriterBuilder<GraphSONWriter>

Method Summary

Modifier and Type	Method and Description
GraphSONWriter	create() Creates the GraphWriter implementation given options provided to the GraphWriter.WriterBuilder implementation.
GraphSONWriter.Builder	mapper(Mapper<ObjectMapper> mapper) Override all of the builder options with this mapper.
GraphSONWriter.Builder	wrapAdjacencyList(boolean wrapAdjacencyListInObject) Wraps the output of GraphWriter.writeGraph(OutputStream, Graph), GraphWriter.writeVertices(OutputStream, Iterator) and GraphWriter.writeVertices(OutputStream, Iterator, Direction) in a JSON object.

Methods inherited from class java.lang.Object

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

Method Detail

mapper

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

Override all of the 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.

wrapAdjacencyList

public GraphSONWriter.Builder wrapAdjacencyList(boolean wrapAdjacencyListInObject)

Wraps the output of GraphWriter.writeGraph(OutputStream, Graph), GraphWriter.writeVertices(OutputStream, Iterator) and GraphWriter.writeVertices(OutputStream, Iterator, Direction) in a JSON object. By default, this value is false which means that the output is such that there is one JSON object (vertex) per line. When true the line breaks are not written and instead a valid JSON object is formed where the vertices are part of a JSON array in a key called "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 GraphSONWriter create()

Description copied from interface: GraphWriter.WriterBuilder

Creates the GraphWriter implementation given options provided to the GraphWriter.WriterBuilder implementation.

Specified by:

create in interface GraphWriter.WriterBuilder<GraphSONWriter>