de.sekmi.histream.ontology.skos.transform

Class RDFTransformation

java.lang.Object

de.sekmi.histream.ontology.skos.transform.RDFTransformation

All Implemented Interfaces:

Transformation

public class RDFTransformation
extends Object
implements Transformation

Transform observations with rules specified in the RDF ontology.

Author:

R.W.Majeed

Field Summary

Fields inherited from interface de.sekmi.histream.io.transform.Transformation

Identity

Constructor Summary

Constructors

Constructor and Description
RDFTransformation(ObservationFactory factory, Store store, String schema, boolean dropFactsWithoutRules) Creates a new transformation engine.

Method Summary

Modifier and Type	Method and Description
Observation	transform(Observation fact, Consumer<Observation> generatedReceiver)

Methods inherited from class java.lang.Object

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

Constructor Detail

RDFTransformation

public RDFTransformation(ObservationFactory factory,
                         Store store,
                         String schema,
                         boolean dropFactsWithoutRules)
                  throws TransformationException

Creates a new transformation engine.

Parameters:

factory - factory used to generate new facts

store - ontology store

schema - SKOS schema to use together with notation to locate ontology concepts. For notation, fact.getConceptId() is used. If set to null, behaves as if Store.getConceptByNotation(String, org.openrdf.model.URI) is called with a null schema.

dropFactsWithoutRules - if set to true, all facts without transformation rules are silently dropped.

Throws:

TransformationException - errors during XPathEvaluator initialisation

Method Detail

transform

public Observation transform(Observation fact,
                             Consumer<Observation> generatedReceiver)
                      throws TransformationException

Specified by:

transform in interface Transformation

Throws:

TransformationException