Package uk.ac.osswatch.simal.model.jena

Source Code of uk.ac.osswatch.simal.model.jena.Document

package uk.ac.osswatch.simal.model.jena;

/*
*
Copyright 2007,2010 University of Oxford *
* 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.
*
*/

import java.util.Set;

import uk.ac.osswatch.simal.model.IDocument;
import uk.ac.osswatch.simal.model.IncompatibleTypeException;

import com.hp.hpl.jena.rdf.model.Model;
import com.hp.hpl.jena.rdf.model.Resource;
import com.hp.hpl.jena.rdf.model.Statement;
import com.hp.hpl.jena.sparql.vocabulary.FOAF;
import com.hp.hpl.jena.vocabulary.RDF;

public class Document extends FoafResource implements IDocument {

  private static final long serialVersionUID = 1908107004236890792L;

  public Document(com.hp.hpl.jena.rdf.model.Resource resource) {
    super(resource);
  }

  public IDocument ensureDocumentType() throws IncompatibleTypeException {
    Resource r = getJenaResource();
    Model model = r.getModel();
    Set<Statement> set = r.listProperties(RDF.type).toSet();

    if (set.size() > 0) {
      Resource type = set.iterator().next().getResource();
      if (!type.equals(FOAF.Document)) {
        throw new IncompatibleTypeException("Expected resource " + r
            + " to be of type " + FOAF.Document + " but is of type " + type);
      }
    } else {
      Statement s = model.createStatement(r, RDF.type, FOAF.Document);
      model.add(s);
    }
    return this;
  }
}
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