org.hypergraphdb.type

Class JavaObjectMapper

java.lang.Object

org.hypergraphdb.type.JavaObjectMapper

All Implemented Interfaces:

HGGraphHolder, JavaTypeMapper

public class JavaObjectMapper
extends Object
implements JavaTypeMapper

Field Summary

Fields

Modifier and Type	Field and Description
protected HashSet<String>	classes
protected HyperGraph	graph
protected HGIndex<String,HGPersistentHandle>	idx
protected HGHandle	superSlot

Constructor Summary

Constructors

Constructor and Description
JavaObjectMapper()

Method Summary

Methods

Modifier and Type	Method and Description
void	addClass(Class<?> c)
void	addClass(String classname)
protected boolean	checkClass(Class<?> javaClass)
HGAtomType	defineHGType(Class<?> javaClass, HGHandle typeHandle) Create a new HyperGraphDB type for the given Java class.
protected HGIndex<String,HGPersistentHandle>	getIndex()
HGAtomType	getJavaBinding(HGHandle typeHandle, HGAtomType hgType, Class<?> javaClass) Create a type wrapper for a given raw HyperGraphDB type.
HGHandle	getSuperSlot()
protected void	initClasses()
protected boolean	mapAsSerializableObject(Class<?> javaClass)
void	setHyperGraph(HyperGraph graph) During load time, set the HyperGraph instance to which this atom belongs.

Methods inherited from class java.lang.Object

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

Field Detail

graph

protected HyperGraph graph

classes

protected HashSet<String> classes

superSlot

protected HGHandle superSlot

idx

protected HGIndex<String,HGPersistentHandle> idx

Constructor Detail

JavaObjectMapper

public JavaObjectMapper()

Method Detail

getIndex

protected HGIndex<String,HGPersistentHandle> getIndex()

getSuperSlot

public HGHandle getSuperSlot()

initClasses

protected void initClasses()

checkClass

protected boolean checkClass(Class<?> javaClass)

mapAsSerializableObject

protected boolean mapAsSerializableObject(Class<?> javaClass)

setHyperGraph

public void setHyperGraph(HyperGraph graph)

Description copied from interface: HGGraphHolder

During load time, set the HyperGraph instance to which this atom belongs.

Specified by:

setHyperGraph in interface HGGraphHolder

defineHGType

public HGAtomType defineHGType(Class<?> javaClass,
                      HGHandle typeHandle)

Description copied from interface: JavaTypeMapper

Create a new HyperGraphDB type for the given Java class. The HGHandle of the type pre-created and provided as a parameter.

This method should return a brand new HGAtomType that will subsequently be saved as a type atom with handle typeHandle and associated with the javaClass class. The method should return null in case it cannot (or it determines that it should not) create a HGAtomType. In the case the JavaTypeFactory will move on to try the next of the registered type mappers.

Specified by:

defineHGType in interface JavaTypeMapper

Returns:

A newly created HGAtomType corresponding to the passed in Java class or null if such a type could not be created.

getJavaBinding

public HGAtomType getJavaBinding(HGHandle typeHandle,
                        HGAtomType hgType,
                        Class<?> javaClass)

Description copied from interface: JavaTypeMapper

Create a type wrapper for a given raw HyperGraphDB type. The type wrapper should work with the regular Java runtime instance of an atom and use the underlying HG type for actual storage and retrieval.

Specified by:

getJavaBinding in interface JavaTypeMapper

Parameters:

typeHandle - The handle of the type being wrapped.

hgType - The HyperGraphDB type instance to be wrapped

javaClass - The Java class corresponding to this HyperGraphDB type.

Returns:

The type wrapper or null if

addClass

public void addClass(Class<?> c)

addClass

public void addClass(String classname)