net.java.rdf.sommer
Class Mapping

java.lang.Object
  net.java.rdf.sommer.Mapping

All Implemented Interfaces:

Mapper, RDFFactory, RewriteMapper

Direct Known Subclasses:

SesameMapper

public abstract class Mapping
extends java.lang.Object
implements Mapper, RewriteMapper, RDFFactory

Classes that implement a Mapper need to implement this interface

Author:

Henry Story

Nested Class Summary

Nested classes/interfaces inherited from interface net.java.rdf.sommer.Mapper

Mapper.Init

Field Summary

(package private) static java.util.HashMap<java.lang.String,java.util.List<java.lang.Class>>

classmap

Constructor Summary

Mapping()

Method Summary

void	cogitate(java.util.List<Inferencer> inferenceList) run the inferencers on this graph one after the other
(package private) java.lang.Class	mostSpecificSubClass(java.lang.Class clazz, java.util.ArrayList<java.lang.String> typeUris) return the most specific subclass of clazz that is mapped to one of the given rdf types we assume that we don't have two subclasses of clazz that are associated with the same rdf type.
void	preload(java.lang.Class... classes) Sometimes one needs to preload a bunch of annotated classes in order to take account of hierarchies.

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.java.rdf.sommer.Mapper

addObject, addObjects, addStatements, clear, createObjectWithId, enableInferencing, equals, getAllObjectsOfType, getClassesOf, getObjectById, graphId, importFrom, importInto, isInferencingEnabled, isMapped, output, output, queryByExample, remove, removeStatements, size, unmap

Methods inherited from interface net.java.rdf.sommer.RewriteMapper

cifpName, cifpObject, createVirtualCollection, getCollectionField, getField, replaceVirtualCollection, setCollectionField, setField

Methods inherited from interface net.java.rdf.sommer.RDFFactory

createLiteral, createLiteral, createLiteralType, createResource

Field Detail

classmap

static final java.util.HashMap<java.lang.String,java.util.List<java.lang.Class>> classmap

Constructor Detail

Mapping

public Mapping()

Method Detail

preload

public void preload(java.lang.Class... classes)

Description copied from interface: Mapper

Sometimes one needs to preload a bunch of annotated classes in order to take account of hierarchies. We want to be able to have the most specific java class possible instantiate an rdf object. But we cannot walk down a java class hierarchy. see Mapping.mostSpecific(clazz,uri);

Specified by:

preload in interface Mapper

mostSpecificSubClass

java.lang.Class mostSpecificSubClass(java.lang.Class clazz,
                                     java.util.ArrayList<java.lang.String> typeUris)

return the most specific subclass of clazz that is mapped to one of the given rdf types we assume that we don't have two subclasses of clazz that are associated with the same rdf type. If this is not the case then the returned class will be randomly selected from one of the available ones. We also have to assume that the types given in rdf map to exclusive java classes. So the collection of typeUris should not be associated with classes in distinct classes in the java class hierarchy. Because there is no clear way to decide which one should be returned. see the thread on sommer.dev.java.net written over the weekend of 10 Dec 2006 mhh: problem: if an object

Parameters:

clazz -

typeUris -

Returns:

a subclass of clazz or clazz itself

cogitate

public void cogitate(java.util.List<Inferencer> inferenceList)

Description copied from interface: Mapper

run the inferencers on this graph one after the other

Specified by:

cogitate in interface Mapper