org.hypergraphdb.type

Class DefaultJavaTypeMapper

java.lang.Object

org.hypergraphdb.type.DefaultJavaTypeMapper

All Implemented Interfaces:

HGGraphHolder, JavaTypeMapper

public class DefaultJavaTypeMapper
extends Object
implements JavaTypeMapper

Constructor Summary

Constructors

Constructor and Description
DefaultJavaTypeMapper()

Method Summary

Methods

Modifier and Type	Method and Description
HGAtomType	defineHGType(Class<?> javaClass, HGHandle typeHandle) Create a new HyperGraphDB type for the given Java class.
HGAtomType	getJavaBinding(HGHandle typeHandle, HGAtomType hgType, Class<?> javaClass) Create a type wrapper for a given raw HyperGraphDB type.
static boolean	includeProperty(Class<?> javaClass, PropertyDescriptor desc)
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

Constructor Detail

DefaultJavaTypeMapper

public DefaultJavaTypeMapper()

Method Detail

includeProperty

public static boolean includeProperty(Class<?> javaClass,
                      PropertyDescriptor desc)

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

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