org.n52.proxy.db.dao.ProxyDatasetDao Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of proxy-dao Show documentation
REST SPI Implementation for SOS Proxy.
There is a newer version: 1.0.0-alpha.9
/*
 * Copyright (C) 2013-2017 52°North Initiative for Geospatial Open Source
 * Software GmbH
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published
 * by the Free Software Foundation.
 *
 * If the program is linked with libraries which are licensed under one of
 * the following licenses, the combination of the program with the linked
 * library is not considered a "derivative work" of the program:
 *
 *     - Apache License, version 2.0
 *     - Apache Software License, version 1.0
 *     - GNU Lesser General Public License, version 3
 *     - Mozilla Public License, versions 1.0, 1.1 and 2.0
 *     - Common Development and Distribution License (CDDL), version 1.0
 *
 * Therefore the distribution of the program linked with libraries licensed
 * under the aforementioned licenses, is permitted by the copyright holders
 * if the distribution is compliant with both the GNU General Public License
 * version 2 and the aforementioned licenses.
 *
 * 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.
 */
package org.n52.proxy.db.dao;

import static java.util.stream.Collectors.toSet;

import java.util.List;
import java.util.Set;

import org.hibernate.Session;
import org.hibernate.criterion.Restrictions;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import org.n52.proxy.db.beans.ProxyServiceEntity;
import org.n52.series.db.beans.DatasetEntity;
import org.n52.series.db.beans.DescribableEntity;
import org.n52.series.db.beans.ServiceEntity;
import org.n52.series.db.beans.UnitEntity;
import org.n52.series.db.dao.DatasetDao;

public class ProxyDatasetDao extends DatasetDao implements InsertDao {

    private static final Logger LOGGER = LoggerFactory.getLogger(ProxyDatasetDao.class);

    public ProxyDatasetDao(Session session) {
        super(session);
    }

    public ProxyDatasetDao(Session session, Class clazz) {
        super(session, clazz);
    }

    @Override
    @SuppressWarnings("unchecked")
    public T getOrInsertInstance(T dataset) {
        if (dataset.getUnit() != null) {
            dataset.setUnit(getOrInsertUnit(dataset.getUnit()));
        }
        T instance = getInstance(dataset);
        if (instance == null) {
            this.session.save(dataset);
            LOGGER.info("Save dataset: " + dataset);
            this.session.flush();
            this.session.refresh(dataset);
            return dataset;
        }
        return instance;
    }

    public UnitEntity getOrInsertUnit(UnitEntity unit) {
        UnitEntity instance = getUnit(unit);
        if (instance == null) {
            this.session.save(unit);
            this.session.flush();
            return unit;
        }
        return instance;
    }

    public Set getIdsForService(ProxyServiceEntity service) {
        return getDatasetsForService(service).stream().map(DescribableEntity::getPkid).collect(toSet());
    }

    public void removeDatasets(Set datasetIds) {
        datasetIds.forEach(id -> this.session.delete(this.session.get(DatasetEntity.class, id)));
        this.session.flush();
    }

    @SuppressWarnings("unchecked")
    public void removeAllOfService(ProxyServiceEntity service) {
        getDefaultCriteria(ProxyDbQuery.createDefaults())
                .add(Restrictions.eq(ProxyServiceEntity.PROPERTY_SERVICE, service))
                .list()
                .forEach(session::delete);
        this.session.createCriteria(UnitEntity.class)
                .add(Restrictions.eq(UnitEntity.PROPERTY_SERVICE, service))
                .list().forEach(session::delete);
        this.session.flush();
    }

    private UnitEntity getUnit(UnitEntity unit) {
        return (UnitEntity) this.session.createCriteria(UnitEntity.class)
                .add(Restrictions.eq(DescribableEntity.PROPERTY_NAME, unit.getName()))
                .add(Restrictions.eq(DescribableEntity.PROPERTY_SERVICE, unit.getService()))
                .uniqueResult();
    }

    @SuppressWarnings("unchecked")
    private T getInstance(T dataset) {
        return (T) getDefaultCriteria(ProxyDbQuery.createDefaults())
                .add(Restrictions.eq(DatasetEntity.PROPERTY_VALUE_TYPE, dataset.getValueType()))
                .add(Restrictions.eq(DatasetEntity.PROPERTY_CATEGORY, dataset.getCategory()))
                .add(Restrictions.eq(DatasetEntity.PROPERTY_FEATURE, dataset.getFeature()))
                .add(Restrictions.eq(DatasetEntity.PROPERTY_PROCEDURE, dataset.getProcedure()))
                .add(Restrictions.eq(DatasetEntity.PROPERTY_PHENOMENON, dataset.getPhenomenon()))
                .add(Restrictions.eq(DatasetEntity.PROPERTY_OFFERING, dataset.getOffering()))
                .add(Restrictions.eq(DatasetEntity.PROPERTY_SERVICE, dataset.getService()))
                .uniqueResult();
    }

    @SuppressWarnings("unchecked")
    private List getDatasetsForService(ServiceEntity service) {
        return getDefaultCriteria(ProxyDbQuery.createDefaults())
                .add(Restrictions.eq(DatasetEntity.PROPERTY_SERVICE, service))
                .list();
    }
}