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REST SPI Implementation for SOS Proxy.
/*
* 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 org.hibernate.Criteria;
import org.hibernate.Session;
import org.hibernate.criterion.DetachedCriteria;
import org.hibernate.criterion.Projections;
import org.hibernate.criterion.Restrictions;
import org.hibernate.criterion.Subqueries;
import org.n52.series.db.beans.DatasetEntity;
import org.n52.series.db.beans.PhenomenonEntity;
import org.n52.series.db.beans.ServiceEntity;
import org.n52.series.db.dao.PhenomenonDao;
public class ProxyPhenomenonDao extends PhenomenonDao
implements InsertDao, ClearDao {
public ProxyPhenomenonDao(Session session) {
super(session);
}
@Override
public PhenomenonEntity getOrInsertInstance(PhenomenonEntity phenomenon) {
PhenomenonEntity instance = getInstance(phenomenon);
if (instance != null) {
return instance;
}
this.session.save(phenomenon);
this.session.flush();
return phenomenon;
}
@Override
@SuppressWarnings("unchecked")
public void clearUnusedForService(ServiceEntity service) {
Criteria criteria = session.createCriteria(getEntityClass())
.add(Restrictions.eq(PhenomenonEntity.PROPERTY_SERVICE, service))
.add(Subqueries.propertyNotIn(PhenomenonEntity.PROPERTY_PKID, createDetachedDatasetFilter()));
criteria.list().forEach(session::delete);
}
private PhenomenonEntity getInstance(PhenomenonEntity phenomenon) {
Criteria criteria = session.createCriteria(getEntityClass())
.add(Restrictions.eq(PhenomenonEntity.PROPERTY_DOMAIN_ID, phenomenon.getDomainId()))
.add(Restrictions.eq(PhenomenonEntity.PROPERTY_SERVICE, phenomenon.getService()));
return (PhenomenonEntity) criteria.uniqueResult();
}
private DetachedCriteria createDetachedDatasetFilter() {
return DetachedCriteria.forClass(DatasetEntity.class)
.setProjection(Projections.distinct(Projections.property(getDatasetProperty())));
}
}
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