/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.stanbol.rules.web.writers;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
//import javax.servlet.ServletContext;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
//import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.Provider;
import org.apache.clerezza.commons.rdf.Graph;
import org.apache.clerezza.commons.rdf.IRI;
import org.apache.clerezza.rdf.core.serializedform.Serializer;
import org.apache.clerezza.rdf.core.serializedform.SupportedFormat;
import org.apache.clerezza.rdf.rdfjson.serializer.RdfJsonSerializingProvider;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Property;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.Service;
import org.apache.stanbol.commons.owl.transformation.OWLAPIToClerezzaConverter;
import org.apache.stanbol.commons.web.base.format.KRFormat;
import org.apache.stanbol.rules.base.api.Recipe;
import org.apache.stanbol.rules.base.api.Rule;
import org.apache.stanbol.rules.base.api.RuleStore;
import org.apache.stanbol.rules.base.api.Symbols;
import org.apache.stanbol.rules.base.api.util.RuleList;
import org.coode.owlapi.manchesterowlsyntax.ManchesterOWLSyntaxOntologyFormat;
import org.coode.owlapi.turtle.TurtleOntologyFormat;
import org.semanticweb.owlapi.apibinding.OWLManager;
import org.semanticweb.owlapi.io.OWLFunctionalSyntaxOntologyFormat;
import org.semanticweb.owlapi.io.OWLXMLOntologyFormat;
import org.semanticweb.owlapi.io.RDFXMLOntologyFormat;
import org.semanticweb.owlapi.model.OWLAxiom;
import org.semanticweb.owlapi.model.OWLDataFactory;
import org.semanticweb.owlapi.model.OWLDataProperty;
import org.semanticweb.owlapi.model.OWLIndividual;
import org.semanticweb.owlapi.model.OWLObjectProperty;
import org.semanticweb.owlapi.model.OWLOntology;
import org.semanticweb.owlapi.model.OWLOntologyCreationException;
import org.semanticweb.owlapi.model.OWLOntologyManager;
import org.semanticweb.owlapi.model.OWLOntologyStorageException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
*
* @author anuzzolese
*
*/
@Component(immediate=true)
@Service(Object.class)
@Property(name = "javax.ws.rs", boolValue = true)
@Provider
@Produces({KRFormat.RDF_XML, KRFormat.OWL_XML, KRFormat.MANCHESTER_OWL, KRFormat.FUNCTIONAL_OWL,
KRFormat.TURTLE, KRFormat.RDF_JSON, MediaType.TEXT_PLAIN})
public class RecipeWriter implements MessageBodyWriter<Recipe> {
@Reference
protected Serializer serializer;
// protected ServletContext servletContext;
@Reference
protected RuleStore ruleStore;
// public RecipeWriter(@Context ServletContext servletContext) {
// Logger log = LoggerFactory.getLogger(getClass());
// this.servletContext = servletContext;
// log.info("Setting context to " + servletContext);
// serializer = (Serializer) this.servletContext.getAttribute(Serializer.class.getName());
// if (serializer == null) {
// log.error("Serializer not found in Servlet context.");
// serializer = new Serializer();
// }
//
// ruleStore = (RuleStore) this.servletContext.getAttribute(RuleStore.class.getName());
//
// if (serializer == null) {
// log.error("RuleStore not found in Servlet context.");
// }
// }
@Override
public long getSize(Recipe arg0, Class<?> arg1, Type arg2, Annotation[] arg3, MediaType arg4) {
// TODO Auto-generated method stub
return -1;
}
@Override
public boolean isWriteable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
return Recipe.class.isAssignableFrom(type);
}
@Override
public void writeTo(Recipe recipe,
Class<?> arg1,
Type arg2,
Annotation[] arg3,
MediaType mediaType,
MultivaluedMap<String,Object> arg5,
OutputStream out) throws IOException, WebApplicationException {
Logger log = LoggerFactory.getLogger(getClass());
log.debug("Rendering the list of recipes.");
if(mediaType.toString().equals(MediaType.TEXT_PLAIN)){
String recipeString = recipe.toString();
out.write(recipeString.getBytes());
}
else if(mediaType.toString().equals(MediaType.TEXT_HTML)){
String recipeString = recipe.toString();
out.write(recipeString.getBytes());
}
else{
OWLOntologyManager manager = OWLManager.createOWLOntologyManager();
OWLDataFactory factory = OWLManager.getOWLDataFactory();
OWLOntology ontology;
try {
ontology = manager.createOntology();
RuleList rules = recipe.getRuleList();
IRI recipeID = recipe.getRecipeID();
String recipeURI = recipeID.toString().replace("<", "").replace(">", "");
org.semanticweb.owlapi.model.IRI recipeIRI = org.semanticweb.owlapi.model.IRI.create(recipeURI);
OWLIndividual recipeIndividual = factory.getOWLNamedIndividual(recipeIRI);
String descriptionURI = Symbols.description.toString().replace("<", "").replace(">", "");
org.semanticweb.owlapi.model.IRI descriptionIRI = org.semanticweb.owlapi.model.IRI.create(descriptionURI);
OWLDataProperty descriptionProperty = factory.getOWLDataProperty(descriptionIRI);
OWLAxiom axiom;
String recipeDescription = recipe.getRecipeDescription();
if(recipeDescription != null){
axiom = factory.getOWLDataPropertyAssertionAxiom(descriptionProperty, recipeIndividual,
recipeDescription);
manager.addAxiom(ontology, axiom);
}
if(rules != null){
for (Rule rule : rules) {
IRI ruleID = rule.getRuleID();
String ruleName = rule.getRuleName();
String ruleDescription = rule.getDescription();
String ruleURI = ruleID.toString().replace("<", "").replace(">", "");
String ruleNameURI = Symbols.ruleName.toString().replace("<", "").replace(">", "");
String ruleBodyURI = Symbols.ruleBody.toString().replace("<", "").replace(">", "");
String ruleHeadURI = Symbols.ruleHead.toString().replace("<", "").replace(">", "");
String hasRuleURI = Symbols.hasRule.toString().replace("<", "").replace(">", "");
String ruleContent = rule.toString();
String[] ruleParts = ruleContent.split("\\->");
org.semanticweb.owlapi.model.IRI ruleIRI = org.semanticweb.owlapi.model.IRI.create(ruleURI);
org.semanticweb.owlapi.model.IRI ruleNameIRI = org.semanticweb.owlapi.model.IRI.create(ruleNameURI);
org.semanticweb.owlapi.model.IRI ruleBodyIRI = org.semanticweb.owlapi.model.IRI.create(ruleBodyURI);
org.semanticweb.owlapi.model.IRI ruleHeadIRI = org.semanticweb.owlapi.model.IRI.create(ruleHeadURI);
org.semanticweb.owlapi.model.IRI hasRuleIRI = org.semanticweb.owlapi.model.IRI.create(hasRuleURI);
OWLIndividual ruleIndividual = factory.getOWLNamedIndividual(ruleIRI);
OWLObjectProperty hasRule = factory.getOWLObjectProperty(hasRuleIRI);
OWLDataProperty nameProperty = factory.getOWLDataProperty(ruleNameIRI);
OWLDataProperty ruleBodyProperty = factory.getOWLDataProperty(ruleBodyIRI);
OWLDataProperty ruleHeadProperty = factory.getOWLDataProperty(ruleHeadIRI);
// add the name to the rule individual
axiom = factory.getOWLDataPropertyAssertionAxiom(nameProperty, ruleIndividual, ruleName);
manager.addAxiom(ontology, axiom);
// add the description to the rule individual
if(ruleDescription != null){
axiom = factory.getOWLDataPropertyAssertionAxiom(descriptionProperty, ruleIndividual,
ruleDescription);
manager.addAxiom(ontology, axiom);
}
// add the rule body to the rule individual
axiom = factory.getOWLDataPropertyAssertionAxiom(ruleBodyProperty, ruleIndividual,
ruleParts[0]);
manager.addAxiom(ontology, axiom);
// add the rule head to the rule individual
axiom = factory.getOWLDataPropertyAssertionAxiom(ruleHeadProperty, ruleIndividual,
ruleParts[1]);
manager.addAxiom(ontology, axiom);
// bind the rule to the recipe
axiom = factory.getOWLObjectPropertyAssertionAxiom(hasRule, recipeIndividual, ruleIndividual);
manager.addAxiom(ontology, axiom);
}
}
/*
* Write the ontology with the list of recipes
*/
if (mediaType.toString().equals(KRFormat.RDF_XML)) {
try {
manager.saveOntology(ontology, new RDFXMLOntologyFormat(), out);
} catch (OWLOntologyStorageException e) {
log.error("Failed to store ontology for rendering.", e);
}
} else if (mediaType.toString().equals(KRFormat.OWL_XML)) {
try {
manager.saveOntology(ontology, new OWLXMLOntologyFormat(), out);
} catch (OWLOntologyStorageException e) {
log.error("Failed to store ontology for rendering.", e);
}
} else if (mediaType.toString().equals(KRFormat.MANCHESTER_OWL)) {
try {
manager.saveOntology(ontology, new ManchesterOWLSyntaxOntologyFormat(), out);
} catch (OWLOntologyStorageException e) {
log.error("Failed to store ontology for rendering.", e);
}
} else if (mediaType.toString().equals(KRFormat.FUNCTIONAL_OWL)) {
try {
manager.saveOntology(ontology, new OWLFunctionalSyntaxOntologyFormat(), out);
} catch (OWLOntologyStorageException e) {
log.error("Failed to store ontology for rendering.", e);
}
} else if (mediaType.toString().equals(KRFormat.TURTLE)) {
try {
manager.saveOntology(ontology, new TurtleOntologyFormat(), out);
} catch (OWLOntologyStorageException e) {
log.error("Failed to store ontology for rendering.", e);
}
} else if (mediaType.toString().equals(KRFormat.RDF_JSON)) {
Graph mGraph = OWLAPIToClerezzaConverter.owlOntologyToClerezzaGraph(ontology);
RdfJsonSerializingProvider provider = new RdfJsonSerializingProvider();
provider.serialize(out, mGraph, SupportedFormat.RDF_JSON);
}
} catch (OWLOntologyCreationException e1) {
log.error("An error occurred.", e1);
}
}
out.flush();
}
}