Java tutorial
/******************************************************************************* * Gisgraphy Project * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA * * Copyright 2008 Gisgraphy project * David Masclet <davidmasclet@gisgraphy.com> * * *******************************************************************************/ package com.gisgraphy.domain.repository; import java.util.ArrayList; import java.util.List; import javax.persistence.PersistenceException; import org.hibernate.Query; import org.hibernate.Session; import org.springframework.orm.hibernate3.HibernateCallback; import org.springframework.stereotype.Repository; import com.gisgraphy.domain.geoloc.entity.AlternateName; /** * A data access object for {@link AlternateName} * * @author <a href="mailto:david.masclet@gisgraphy.com">David Masclet</a> */ @Repository public class AlternateNameDao extends GenericDao<AlternateName, Long> implements IAlternateNameDao { /** * Default constructor */ public AlternateNameDao() { super(AlternateName.class); } /* * (non-Javadoc) * * @see com.gisgraphy.domain.repository.IAlternateNameDao#getUsedLanguages() */ @SuppressWarnings("unchecked") public List<String> getUsedLanguagesCodes() { return (List<String>) this.getHibernateTemplate().execute(new HibernateCallback() { public Object doInHibernate(final Session session) throws PersistenceException { final String queryString = "select distinct(a.language) from AlternateName a where a.language != null"; final Query qry = session.createQuery(queryString); qry.setCacheable(true); List<String> result = (List<String>) qry.list(); if (result == null) { result = new ArrayList<String>(); } return result; } }); } }