org.apache.tinkerpop.gremlin.structure.io.gryo

Class GryoMapper.Builder

java.lang.Object

org.apache.tinkerpop.gremlin.structure.io.gryo.GryoMapper.Builder

All Implemented Interfaces:

Mapper.Builder<GryoMapper.Builder>

Enclosing class:

GryoMapper

public static class GryoMapper.Builder
extends Object
implements Mapper.Builder<GryoMapper.Builder>

A builder to construct a GryoMapper instance.

Method Summary

Modifier and Type	Method and Description
GryoMapper.Builder	addCustom(Class... custom) Register custom classes to serializes with gryo using default serialization.
GryoMapper.Builder	addCustom(Class clazz, Function<Kryo,Serializer> functionOfKryo) Register a custom class to serialize with a custom serializer as returned from a Function.
GryoMapper.Builder	addCustom(Class clazz, Serializer serializer) Register custom class to serialize with a custom serialization class.
GryoMapper.Builder	addRegistry(IoRegistry registry) Adds a vendor supplied IoRegistry to the Mapper.Builder which enables it to check for vendor custom serializers to add to the Mapper.
GryoMapper.Builder	classResolver(Supplier<ClassResolver> classResolverSupplier) Provides a custom Kryo ClassResolver to be supplied to a Kryo instance.
GryoMapper	create() Creates a GryoMapper.
GryoMapper.Builder	referenceTracking(boolean referenceTracking) By default, each appearance of an object in the graph after the first is stored as an integer ordinal.
GryoMapper.Builder	registrationRequired(boolean registrationRequired) When set to true, all classes serialized by the Kryo instances created from this GryoMapper must have their classes known up front and registered appropriately through this builder.
GryoMapper.Builder	version(GryoVersion version) The version of Gryo to use in the mapper.

Methods inherited from class java.lang.Object

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

Method Detail

addRegistry

public GryoMapper.Builder addRegistry(IoRegistry registry)

Adds a vendor supplied IoRegistry to the Mapper.Builder which enables it to check for vendor custom serializers to add to the Mapper. All Io implementations should expose this method via this Mapper.Builder so that it is compatible with Graph.io(org.apache.tinkerpop.gremlin.structure.io.Io.Builder<I>). Successive calls to this method will add multiple registries. Registry order must be respected when doing so. In other words, data written with IoRegistry A added first and B second must be read by a Mapper with that same registry ordering. Attempting to add B before A will result in errors.

Specified by:

addRegistry in interface Mapper.Builder<GryoMapper.Builder>

version

public GryoMapper.Builder version(GryoVersion version)

The version of Gryo to use in the mapper. Defaults to 1.0. Calls to this method will reset values specified to addCustom(Class, Function) and related overloads.

classResolver

public GryoMapper.Builder classResolver(Supplier<ClassResolver> classResolverSupplier)

Provides a custom Kryo ClassResolver to be supplied to a Kryo instance. If this value is not supplied then it will default to the GryoClassResolver. To ensure compatibility with Gryo it is highly recommended that objects passed to this method extend that class.

If the ClassResolver implementation share state, then the Supplier should typically create new instances when requested, as the Supplier will be called for each Kryo instance created.

addCustom

public GryoMapper.Builder addCustom(Class... custom)

Register custom classes to serializes with gryo using default serialization. Note that calling this method for a class that is already registered will override that registration.

addCustom

public GryoMapper.Builder addCustom(Class clazz,
                                    Serializer serializer)

Register custom class to serialize with a custom serialization class. Note that calling this method for a class that is already registered will override that registration.

addCustom

public GryoMapper.Builder addCustom(Class clazz,
                                    Function<Kryo,Serializer> functionOfKryo)

Register a custom class to serialize with a custom serializer as returned from a Function. Note that calling this method for a class that is already registered will override that registration.

registrationRequired

public GryoMapper.Builder registrationRequired(boolean registrationRequired)

When set to true, all classes serialized by the Kryo instances created from this GryoMapper must have their classes known up front and registered appropriately through this builder. By default this value is true. This approach is more efficient than setting the value to false.

Parameters:

registrationRequired - set to true if the classes should be registered up front or false otherwise

referenceTracking

public GryoMapper.Builder referenceTracking(boolean referenceTracking)

By default, each appearance of an object in the graph after the first is stored as an integer ordinal. This allows multiple references to the same object and cyclic graphs to be serialized. This has a small amount of overhead and can be disabled to save space if it is not needed.

Parameters:

referenceTracking - set to true to enable and false otherwise

create

public GryoMapper create()

Creates a GryoMapper.