public final class GraphSONReader extends Object implements GraphReader
Edge and Vertex objects are serialized to Map instances. If an
Element is used as a key, it is coerced to its identifier. Other complex
objects are converted via Object.toString() unless there is a mapper serializer supplied.| Modifier and Type | Class and Description |
|---|---|
static class |
GraphSONReader.Builder |
GraphReader.ReaderBuilder<T extends GraphReader>| Modifier and Type | Method and Description |
|---|---|
static GraphSONReader.Builder |
build() |
Edge |
readEdge(InputStream inputStream,
Function<org.apache.tinkerpop.gremlin.structure.util.Attachable<Edge>,Edge> edgeAttachMethod)
Read an
Edge from output generated by GraphSONWriter.writeEdge(OutputStream, Edge) or via
an Edge passed to GraphSONWriter.writeObject(OutputStream, Object). |
void |
readGraph(InputStream inputStream,
Graph graphToWriteTo)
Read data into a
Graph from output generated by any of the GraphSONWriter writeVertex or
writeVertices methods or by GryoWriter.writeGraph(OutputStream, Graph). |
<C> C |
readObject(InputStream inputStream,
Class<? extends C> clazz)
Reads an arbitrary object using the registered serializers.
|
Property |
readProperty(InputStream inputStream,
Function<org.apache.tinkerpop.gremlin.structure.util.Attachable<Property>,Property> propertyAttachMethod)
Read a
Property from output generated by GraphSONWriter.writeProperty(OutputStream, Property) or
via an Property passed to GraphSONWriter.writeObject(OutputStream, Object). |
Vertex |
readVertex(InputStream inputStream,
Function<org.apache.tinkerpop.gremlin.structure.util.Attachable<Vertex>,Vertex> vertexAttachMethod)
Read a
Vertex from output generated by any of the GraphSONWriter writeVertex or
writeVertices methods or by GraphSONWriter.writeGraph(OutputStream, Graph). |
Vertex |
readVertex(InputStream inputStream,
Function<org.apache.tinkerpop.gremlin.structure.util.Attachable<Vertex>,Vertex> vertexAttachMethod,
Function<org.apache.tinkerpop.gremlin.structure.util.Attachable<Edge>,Edge> edgeAttachMethod,
Direction attachEdgesOfThisDirection)
Read a
Vertex from output generated by any of the GraphSONWriter writeVertex or
writeVertices methods or by GraphSONWriter.writeGraph(OutputStream, Graph). |
VertexProperty |
readVertexProperty(InputStream inputStream,
Function<org.apache.tinkerpop.gremlin.structure.util.Attachable<VertexProperty>,VertexProperty> vertexPropertyAttachMethod)
Read a
VertexProperty from output generated by
GraphSONWriter.writeVertexProperty(OutputStream, VertexProperty) or via an VertexProperty passed
to GraphSONWriter.writeObject(OutputStream, Object). |
Iterator<Vertex> |
readVertices(InputStream inputStream,
Function<org.apache.tinkerpop.gremlin.structure.util.Attachable<Vertex>,Vertex> vertexAttachMethod,
Function<org.apache.tinkerpop.gremlin.structure.util.Attachable<Edge>,Edge> edgeAttachMethod,
Direction attachEdgesOfThisDirection)
Read
Vertex objects from output generated by any of the GraphSONWriter writeVertex or
writeVertices methods or by GraphSONWriter.writeGraph(OutputStream, Graph). |
public void readGraph(InputStream inputStream, Graph graphToWriteTo) throws IOException
Graph from output generated by any of the GraphSONWriter writeVertex or
writeVertices methods or by GryoWriter.writeGraph(OutputStream, Graph).readGraph in interface GraphReaderinputStream - a stream containing an entire graph of vertices and edges as defined by the accompanying
GraphSONWriter.writeGraph(OutputStream, Graph).graphToWriteTo - the graph to write to when reading from the stream.IOExceptionpublic Iterator<Vertex> readVertices(InputStream inputStream, Function<org.apache.tinkerpop.gremlin.structure.util.Attachable<Vertex>,Vertex> vertexAttachMethod, Function<org.apache.tinkerpop.gremlin.structure.util.Attachable<Edge>,Edge> edgeAttachMethod, Direction attachEdgesOfThisDirection) throws IOException
Vertex objects from output generated by any of the GraphSONWriter writeVertex or
writeVertices methods or by GraphSONWriter.writeGraph(OutputStream, Graph).readVertices in interface GraphReaderinputStream - a stream containing at least one Vertex as defined by the accompanying
GraphWriter.writeVertices(OutputStream, Iterator, Direction) or
GraphWriter.writeVertices(OutputStream, Iterator) methods.vertexAttachMethod - a function that creates re-attaches a Vertex to a Host object.edgeAttachMethod - a function that creates re-attaches a Edge to a Host object.attachEdgesOfThisDirection - only edges of this direction are passed to the edgeMaker.IOExceptionpublic Vertex readVertex(InputStream inputStream, Function<org.apache.tinkerpop.gremlin.structure.util.Attachable<Vertex>,Vertex> vertexAttachMethod) throws IOException
Vertex from output generated by any of the GraphSONWriter writeVertex or
writeVertices methods or by GraphSONWriter.writeGraph(OutputStream, Graph).readVertex in interface GraphReaderinputStream - a stream containing at least a single vertex as defined by the accompanying
GraphWriter.writeVertex(OutputStream, Vertex).vertexAttachMethod - a function that creates re-attaches a Vertex to a Host object.IOExceptionpublic Vertex readVertex(InputStream inputStream, Function<org.apache.tinkerpop.gremlin.structure.util.Attachable<Vertex>,Vertex> vertexAttachMethod, Function<org.apache.tinkerpop.gremlin.structure.util.Attachable<Edge>,Edge> edgeAttachMethod, Direction attachEdgesOfThisDirection) throws IOException
Vertex from output generated by any of the GraphSONWriter writeVertex or
writeVertices methods or by GraphSONWriter.writeGraph(OutputStream, Graph).readVertex in interface GraphReaderinputStream - a stream containing at least one Vertex as defined by the accompanying
GraphWriter.writeVertices(OutputStream, Iterator, Direction) method.vertexAttachMethod - a function that creates re-attaches a Vertex to a Host object.edgeAttachMethod - a function that creates re-attaches a Edge to a Host object.attachEdgesOfThisDirection - only edges of this direction are passed to the edgeMaker.IOExceptionpublic Edge readEdge(InputStream inputStream, Function<org.apache.tinkerpop.gremlin.structure.util.Attachable<Edge>,Edge> edgeAttachMethod) throws IOException
Edge from output generated by GraphSONWriter.writeEdge(OutputStream, Edge) or via
an Edge passed to GraphSONWriter.writeObject(OutputStream, Object).readEdge in interface GraphReaderinputStream - a stream containing at least one Edge as defined by the accompanying
GraphWriter.writeEdge(OutputStream, Edge) method.edgeAttachMethod - a function that creates re-attaches a Edge to a Host object.IOExceptionpublic VertexProperty readVertexProperty(InputStream inputStream, Function<org.apache.tinkerpop.gremlin.structure.util.Attachable<VertexProperty>,VertexProperty> vertexPropertyAttachMethod) throws IOException
VertexProperty from output generated by
GraphSONWriter.writeVertexProperty(OutputStream, VertexProperty) or via an VertexProperty passed
to GraphSONWriter.writeObject(OutputStream, Object).readVertexProperty in interface GraphReaderinputStream - a stream containing at least one VertexProperty as written by the accompanying
GraphWriter.writeVertexProperty(OutputStream, VertexProperty) method.vertexPropertyAttachMethod - a function that creates re-attaches a VertexProperty to a
Host object.IOExceptionpublic Property readProperty(InputStream inputStream, Function<org.apache.tinkerpop.gremlin.structure.util.Attachable<Property>,Property> propertyAttachMethod) throws IOException
Property from output generated by GraphSONWriter.writeProperty(OutputStream, Property) or
via an Property passed to GraphSONWriter.writeObject(OutputStream, Object).readProperty in interface GraphReaderinputStream - a stream containing at least one Property as written by the accompanying
GraphWriter.writeProperty(OutputStream, Property) method.propertyAttachMethod - a function that creates re-attaches a Property to a Host object.IOExceptionpublic <C> C readObject(InputStream inputStream, Class<? extends C> clazz) throws IOException
readObject in interface GraphReaderinputStream - a stream containing an object.clazz - the class expected to be in the stream - may or may not be used by the underlying implementation.IOExceptionpublic static GraphSONReader.Builder build()
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