no.computas.zebra.exercises.Exercise.java Source code

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Here is the source code for no.computas.zebra.exercises.Exercise.java

Source

package no.computas.zebra.exercises;

/*
 * #%L
 * Zebra
 * %%
 * Copyright (C) 2014 Computas AS
 * %%
 * 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.
 * #L%
 */

import com.hp.hpl.jena.ontology.Individual;
import com.hp.hpl.jena.ontology.OntModel;
import com.hp.hpl.jena.rdf.model.Statement;
import com.hp.hpl.jena.rdf.model.StmtIterator;
import com.hp.hpl.jena.util.iterator.ExtendedIterator;
import org.apache.commons.lang.StringUtils;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/**
 * @author Michael Gfeller
 */
public class Exercise {
    protected static final String TTL = "TTL";
    protected List<Individual> individuals;

    public int getIndividualsCount() {
        return individuals.size();
    }

    public Individual getIndividual(String localname) {
        for (Individual individual : individuals) {
            if (localname.equals(individual.getLocalName())) {
                return individual;
            }
        }
        return null;
    }

    public List<Individual> getIndividuals() {
        return Collections.unmodifiableList(individuals);
    }

    protected List<Individual> getIndividuals(OntModel model) {
        List<Individual> individuals = new ArrayList<Individual>();
        ExtendedIterator<Individual> iterator = model.listIndividuals();
        while (iterator.hasNext()) {
            individuals.add(iterator.next());
        }
        return individuals;
    }

    protected String printIndividuals(List<Individual> individuals) {
        StringBuilder stringBuffer = new StringBuilder();
        for (Individual individual : individuals) {
            stringBuffer.append(printIndividual(individual)).append("\n");
        }
        return stringBuffer.toString();
    }

    protected static String printIndividual(Individual individual) {
        StringBuilder stringBuilder = new StringBuilder();
        stringBuilder.append("Individual: " + individual.getLocalName() + "\n");
        StmtIterator properties = individual.listProperties();
        while (properties.hasNext()) {
            Statement s = properties.next();
            stringBuilder.append("  " + s.getPredicate().getLocalName() + " : " + s.getObject().toString() + "\n");
        }
        properties.close();
        stringBuilder.append("\n");
        stringBuilder.append(StringUtils.repeat("-", 70));
        return stringBuilder.toString();
    }
}