Java tutorial
/** * Copyright 2010 Vstra Gtalandsregionen * * This library is free software; you can redistribute it and/or modify * it under the terms of version 2.1 of the GNU Lesser General Public * License as published by the Free Software Foundation. * * 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 * */ package se.vgregion.urlservice.repository.jpa; import java.util.UUID; import javax.persistence.NoResultException; import org.springframework.stereotype.Repository; import org.springframework.transaction.annotation.Propagation; import org.springframework.transaction.annotation.Transactional; import se.vgregion.dao.domain.patterns.repository.db.jpa.AbstractJpaRepository; import se.vgregion.urlservice.repository.ApplicationRepository; import se.vgregion.urlservice.types.Application; @Repository("applicationRepository") public class JpaApplicationRepository extends AbstractJpaRepository<Application, UUID, UUID> implements ApplicationRepository { public JpaApplicationRepository() { super(Application.class); } @Override @Transactional(propagation = Propagation.MANDATORY, readOnly = true) public Application find(UUID id) { try { return (Application) entityManager .createQuery("select l from " + type.getSimpleName() + " l where l.id = :id") .setParameter("id", id).getSingleResult(); } catch (NoResultException e) { return null; } } @Override @Transactional(propagation = Propagation.MANDATORY, readOnly = true) public Application findByName(String name) { try { return (Application) entityManager .createQuery("select l from " + type.getSimpleName() + " l where l.name = :name") .setParameter("name", name).getSingleResult(); } catch (NoResultException e) { return null; } } @Override @Transactional(propagation = Propagation.MANDATORY, readOnly = true) public Application findByApiKey(String apikey) { try { return (Application) entityManager .createQuery("select l from " + type.getSimpleName() + " l where l.apikey = :apikey") .setParameter("apikey", apikey).getSingleResult(); } catch (NoResultException e) { return null; } } }