org.energyos.espi.common.repositories.jpa.MeterReadingRepositoryImpl.java Source code

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Here is the source code for org.energyos.espi.common.repositories.jpa.MeterReadingRepositoryImpl.java

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/*
 * Copyright 2013, 2014, 2015 EnergyOS.org
 *
 *    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.
 */

package org.energyos.espi.common.repositories.jpa;

import java.util.GregorianCalendar;
import java.util.List;
import java.util.UUID;

import javax.persistence.EntityManager;
import javax.persistence.NoResultException;
import javax.persistence.PersistenceContext;

import org.energyos.espi.common.domain.MeterReading;
import org.energyos.espi.common.domain.UsagePoint;
import org.energyos.espi.common.repositories.MeterReadingRepository;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;

@Repository
@Transactional(rollbackFor = { javax.xml.bind.JAXBException.class }, noRollbackFor = {
        javax.persistence.NoResultException.class, org.springframework.dao.EmptyResultDataAccessException.class })
public class MeterReadingRepositoryImpl implements MeterReadingRepository {

    @PersistenceContext
    protected EntityManager em;

    @Override
    public MeterReading findById(Long meterReadingId) {
        return em.find(MeterReading.class, meterReadingId);
    }

    @Override
    @Transactional(rollbackFor = { javax.xml.bind.JAXBException.class }, noRollbackFor = {
            javax.persistence.NoResultException.class,
            org.springframework.dao.EmptyResultDataAccessException.class })
    public void persist(MeterReading meterReading) {
        em.persist(meterReading);
    }

    @Override
    public MeterReading findByUUID(UUID uuid) {
        return (MeterReading) em.createNamedQuery(MeterReading.QUERY_FIND_BY_UUID)
                .setParameter("uuid", uuid.toString().toUpperCase()).getSingleResult();
    }

    @SuppressWarnings("unchecked")
    @Override
    public List<Long> findAllIds() {
        List<Long> temp;
        temp = (List<Long>) this.em.createNamedQuery(MeterReading.QUERY_FIND_ALL_IDS).getResultList();
        return temp;
    }

    @Override
    @Transactional(rollbackFor = { javax.xml.bind.JAXBException.class }, noRollbackFor = {
            javax.persistence.NoResultException.class,
            org.springframework.dao.EmptyResultDataAccessException.class })
    public void deleteById(Long id) {
        MeterReading mr = findById(id);
        UsagePoint up = mr.getUsagePoint();
        mr.removeReadingType(mr.getReadingType());
        if (up != null) {
            up.removeMeterReading(mr);
            em.persist(em.contains(up) ? up : em.merge(up));
        }
        em.remove(em.contains(mr) ? mr : em.merge(mr));
    }

    @Override
    @Transactional(rollbackFor = { javax.xml.bind.JAXBException.class }, noRollbackFor = {
            javax.persistence.NoResultException.class,
            org.springframework.dao.EmptyResultDataAccessException.class })
    public void createOrReplaceByUUID(MeterReading meterReading) {
        try {
            MeterReading existingMeterReading = findByUUID(meterReading.getUUID());
            meterReading.setId(existingMeterReading.getId());
            if (meterReading.getUsagePoint() == null) {
                meterReading.setUsagePoint(existingMeterReading.getUsagePoint());
            }

            if (existingMeterReading.getIntervalBlocks() != null) {
                meterReading.setIntervalBlocks(existingMeterReading.getIntervalBlocks());
            }

            if (existingMeterReading.getReadingType() != null) {
                meterReading.setReadingType(existingMeterReading.getReadingType());
            }

            if (existingMeterReading.getRelatedLinks() != null) {
                meterReading.setRelatedLinks(existingMeterReading.getRelatedLinks());
            }

            if (existingMeterReading.getSelfLink() != null) {
                meterReading.setSelfLink(existingMeterReading.getSelfLink());
            }

            if (existingMeterReading.getUpLink() != null) {
                meterReading.setUpLink(existingMeterReading.getUpLink());
            }

            em.merge(meterReading);
        } catch (NoResultException e) {
            meterReading.setPublished(new GregorianCalendar());
            meterReading.setUpdated(new GregorianCalendar());
            persist(meterReading);
        }

    }

}