org.sloth.persistence.impl.ReportDaoImpl.java Source code

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Here is the source code for org.sloth.persistence.impl.ReportDaoImpl.java

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/*
 * Copyright (C) 2009-2010  Stefan Arndt, Christian Autermann, Dustin Demuth,
 *                  Christoph Fendrich, Simon Ottenhues, Christian Paluschek
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.sloth.persistence.impl;

import java.util.Collection;

import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Root;

import org.sloth.exception.EntityAlreadyKnownException;
import org.sloth.exception.EntityNotKnownException;
import org.sloth.model.Observation;
import org.sloth.model.Report;
import org.sloth.model.Report_;
import org.sloth.model.User;
import org.sloth.persistence.ReportDao;
import org.springframework.stereotype.Repository;

/**
 * Implementation of a {@link ReportDao}.
 * 
 * @author Christian Autermann
 * @author Stefan Arndt
 * @author Dustin Demuth
 * @author Christoph Fendrich
 * @author Simon Ottenhues
 * @author Christian Paluschek
 */
@Repository
public class ReportDaoImpl extends EntityManagerDao<Report> implements ReportDao {

    @Override
    public void delete(Collection<Report> t) throws NullPointerException, IllegalArgumentException {
        for (Report r : t) {
            if (!isAttached(r)) {
                throw new EntityNotKnownException();
            }
            logger.info("Deleting Report with Id: {}", r.getId());
            getEntityManager().remove(r);
        }
        getEntityManager().flush();
    }

    @Override
    public void delete(Report t) throws NullPointerException, IllegalArgumentException {
        if (!isAttached(t)) {
            throw new EntityNotKnownException();
        }
        logger.info("Deleting Report with Id: {}", t.getId());
        getEntityManager().remove(t);
        getEntityManager().flush();

    }

    @Override
    public Collection<Report> getAll() {
        CriteriaQuery<Report> cq = getEntityManager().getCriteriaBuilder().createQuery(Report.class);
        cq.select(cq.from(Report.class));
        Collection<Report> list = getEntityManager().createQuery(cq).getResultList();
        logger.info("Getting all Reports; Found: {}", list.size());
        return list;
    }

    @Override
    public Report getById(Long id) {
        if (id == null) {
            throw new NullPointerException();
        }
        logger.info("Searching for Report with Id: {}", id);
        Report r = getEntityManager().find(Report.class, id);
        if (r != null) {
            logger.info("Found Report with Id {}; Author: {}; Observation: {}",
                    new Object[] { r.getId(), r.getAuthor().getId(), r.getObservation().getId() });
        } else {
            logger.info("Can't find Report with Id {}", id);
        }
        return r;
    }

    @Override
    public Collection<Report> getByObservation(Observation o)
            throws NullPointerException, IllegalArgumentException {
        if (o == null) {
            throw new NullPointerException();
        }
        if (o.isNew()) {
            throw new IllegalArgumentException();
        }
        CriteriaBuilder cb = getEntityManager().getCriteriaBuilder();
        CriteriaQuery<Report> cq = cb.createQuery(Report.class);
        Root<Report> r = cq.from(Report.class);
        cq.select(r).where(cb.equal(r.get(Report_.observation), o));
        Collection<Report> result = getEntityManager().createQuery(cq).getResultList();
        logger.info("{} Reports for Observation {}.", result.size(), o);
        return result;
    }

    @Override
    public Collection<Report> getByUser(User u) throws NullPointerException, IllegalArgumentException {
        if (u == null) {
            throw new NullPointerException();
        }
        if (u.isNew()) {
            throw new IllegalArgumentException();
        }
        CriteriaBuilder cb = getEntityManager().getCriteriaBuilder();
        CriteriaQuery<Report> cq = cb.createQuery(Report.class);
        Root<Report> r = cq.from(Report.class);
        cq.select(r).where(cb.equal(r.get(Report_.author), u));
        Collection<Report> result = getEntityManager().createQuery(cq).getResultList();
        logger.info("Found {} Reports by {}.", result.size(), u);
        return result;
    }

    @Override
    public Collection<Report> getProcessed() {
        return get(true);

    }

    @Override
    public Collection<Report> getUnprocessed() {
        return get(false);
    }

    @Override
    public void save(Report t) throws NullPointerException {
        if (isAttached(t)) {
            throw new EntityAlreadyKnownException();
        }
        getEntityManager().persist(t);
        logger.info("Persisting Report; Generated Id is: {}", t.getId());
        getEntityManager().flush();
    }

    @Override
    public void update(Report t) throws NullPointerException, IllegalArgumentException {
        if (!isAttached(t)) {
            throw new EntityNotKnownException();
        }
        logger.info("Updating Report with Id: {}", t.getId());
        getEntityManager().merge(t);
        getEntityManager().flush();
    }

    private Collection<Report> get(boolean processed) {
        CriteriaBuilder cb = getEntityManager().getCriteriaBuilder();
        CriteriaQuery<Report> cq = cb.createQuery(Report.class);
        Root<Report> r = cq.from(Report.class);
        cq.select(r).where(cb.equal(r.get(Report_.processed), processed));
        Collection<Report> result = getEntityManager().createQuery(cq).getResultList();
        logger.info("{} {} Reports.", (processed) ? "processed" : "unprocessed", result.size());
        return result;
    }
}