it.tidalwave.bluebill.othermarshallers.StatementUnmarshallerFactoryImpl Maven / Gradle / Ivy
/***********************************************************************************************************************
*
* blueBill Core - open source birding
* Copyright (C) 2009-2011 by Tidalwave s.a.s. (http://www.tidalwave.it)
*
***********************************************************************************************************************
*
* Licensed 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.
*
***********************************************************************************************************************
*
* WWW: http://bluebill.tidalwave.it
* SCM: https://kenai.com/hg/bluebill~core-src
*
**********************************************************************************************************************/
package it.tidalwave.bluebill.othermarshallers;
import javax.annotation.Nonnull;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.openide.util.lookup.ServiceProvider;
import it.tidalwave.util.Id;
import it.tidalwave.util.NotFoundException;
import it.tidalwave.semantic.io.spi.StatementUnmarshaller;
import it.tidalwave.semantic.io.spi.StatementUnmarshallerFactory;
import it.tidalwave.semantic.io.spi.StatementUnmarshallerSupport;
import it.tidalwave.observation.simple.rdf.SimpleLocationUnmarshaller;
import it.tidalwave.observation.simple.rdf.SimpleObservableUnmarshaller;
import it.tidalwave.observation.simple.rdf.SimpleObservationItemUnmarshaller;
import it.tidalwave.observation.simple.rdf.SimpleObservationSetUnmarshaller;
import it.tidalwave.observation.simple.rdf.SimpleObservationUnmarshaller;
import it.tidalwave.observation.simple.rdf.SimpleObserverUnmarshaller;
import it.tidalwave.observation.simple.rdf.SimpleSourceUnmarshaller;
import it.tidalwave.observation.simple.rdf.Vocabulary;
import it.tidalwave.bluebill.othermarshallers.MediaUnmarshaller;
import it.tidalwave.semantic.io.impl.Converter;
import org.openrdf.model.Statement;
/***********************************************************************************************************************
*
* @author Fabrizio Giudici
* @version $Id$
*
**********************************************************************************************************************/
@ServiceProvider(service=StatementUnmarshallerFactory.class)
public class StatementUnmarshallerFactoryImpl implements StatementUnmarshallerFactory
{
private final Map unmarshallerMapByType = new HashMap();
/*******************************************************************************************************************
*
*
******************************************************************************************************************/
public StatementUnmarshallerFactoryImpl()
{
// FIXME: discover with Lookup
unmarshallerMapByType.put(Vocabulary.OBSERVATION_SET, new SimpleObservationSetUnmarshaller());
unmarshallerMapByType.put(Vocabulary.OBSERVATION, new SimpleObservationUnmarshaller());
unmarshallerMapByType.put(Vocabulary.OBSERVATION_ITEM, new SimpleObservationItemUnmarshaller());
unmarshallerMapByType.put(Vocabulary.OBSERVABLE, new SimpleObservableUnmarshaller());
unmarshallerMapByType.put(Vocabulary.OBSERVER, new SimpleObserverUnmarshaller());
unmarshallerMapByType.put(Vocabulary.DC_PUBLISHER, new SimpleSourceUnmarshaller());
unmarshallerMapByType.put(Vocabulary.LOCATION, new SimpleLocationUnmarshaller());
// factoryMapByType.put(Media.FOAF_DOCUMENT, new MediaTripleUnmarshaller());
}
/*******************************************************************************************************************
*
*
******************************************************************************************************************/
@Nonnull
public StatementUnmarshaller findStatementUnmarshallerFor (final @Nonnull List statements)
throws NotFoundException
{
StatementUnmarshaller unmarshaller = null; // = new EntityTripleUnmarshaller();
// Find the best factory - FIXME: you should pick the most specialized one, but where to find hierarchy info?
for (final Statement statement :statements)
{
StatementUnmarshallerSupport temp = null;
if (statement.getPredicate().stringValue().equals(Vocabulary.RDF_TYPE.stringValue()))
{
temp = unmarshallerMapByType.get(Converter.valueToId(statement.getObject()));
}
else if (statement.getPredicate().stringValue().equals(Vocabulary.DC_TYPE.stringValue())
&& statement.getObject().stringValue().startsWith("http://purl.org/dc/dcmitype/"))
{
temp = new MediaUnmarshaller();
}
if (temp != null)
{
unmarshaller = temp;
}
}
return NotFoundException.throwWhenNull(unmarshaller, "No StatementUnmarshaller for %s", statements);
}
}