public interface JavaTypeMapper extends HGGraphHolder
JavaTypeMapper is used to create HyperGraphDB type out of Java classes and
to provide appropriate run-time representations.
When the type an atom of an unknown Java class is first requested, the type system must
create an appropriate HyperGraphDB type using Java reflection on the class. The HyperGraphDB
type should be portable and potentially usable from other languages such as C++. For example
a plain Java bean is usually translated into the general
The HyperGraphDB type, being general, doesn't have to necessarily create objects of the original Java class. In other words
|Modifier and Type||Method and Description|
Create a new HyperGraphDB type for the given Java class.
Create a type wrapper for a given raw HyperGraphDB type.
HGAtomType defineHGType(Class<?> javaClass, HGHandle typeHandle)
Create a new HyperGraphDB type for the given Java class. The
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
javaClass class. The method should return
case it cannot (or it determines that it should not) create a
In the case the JavaTypeFactory will move on to try the next of the registered
HGAtomTypecorresponding to the passed in Java class or
nullif such a type could not be created.
HGAtomType getJavaBinding(HGHandle typeHandle, HGAtomType hgType, Class<?> javaClass)
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.
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.
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