Java tutorial
/** * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You 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 com.siriusit.spezg.multilib.storage.jpa; import java.util.Date; import java.util.List; import javax.persistence.EntityManager; import javax.persistence.PersistenceContext; import javax.persistence.TypedQuery; import org.springframework.stereotype.Repository; import com.siriusit.spezg.multilib.domain.Loan; import com.siriusit.spezg.multilib.domain.Person; import com.siriusit.spezg.multilib.domain.Unit; import com.siriusit.spezg.multilib.domain.jpa.LoanDomainObject; import com.siriusit.spezg.multilib.storage.LoanRepository; /** * * @author Thao Nguyen <thao.nguyen@SiriusIT.com> */ @Repository("loanRepository") public class JpaLoanRepository implements LoanRepository { @PersistenceContext(unitName = "multilib-db") private EntityManager entityManager; public EntityManager getEntityManager() { return entityManager; } public void setEntityManager(EntityManager entityManager) { this.entityManager = entityManager; } @Override public Loan createLoan(Person loaner, Unit unit, Date dateOut, Date dateIn, Date deadline) { Loan loan = new LoanDomainObject(loaner, unit, dateOut, dateIn, deadline); entityManager.persist(loan); return loan; } @Override public void updateLoan(Loan loan) { entityManager.persist(loan); } @Override public void deleteLoan(Loan loan) { entityManager.remove(loan); } @Override public List<? extends Loan> findLoanUnitsBy(Person loaner) { TypedQuery<LoanDomainObject> query = entityManager.createNamedQuery("findLoanUnitsByPerson", LoanDomainObject.class); query.setParameter("loaner", loaner); return query.getResultList(); } @Override public List<? extends Loan> findLoansByUnit(Unit unit) { TypedQuery<LoanDomainObject> query = entityManager.createNamedQuery("findLoanByUnit", LoanDomainObject.class); query.setParameter("unit", unit); return query.getResultList(); } @Override public List<? extends Loan> findLoanByOwner(Person owner) { TypedQuery<LoanDomainObject> query = entityManager.createNamedQuery("findLoanByOwner", LoanDomainObject.class); query.setParameter("owner", owner); return query.getResultList(); } }