Java tutorial
/* * Copyright (c) 2005-2009 Grameen Foundation USA * All rights reserved. * * Licensed 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. * * See also http://www.apache.org/licenses/LICENSE-2.0.html for an * explanation of the license and how it is applied. */ package org.mifos.user.repository; import java.util.List; import javax.persistence.EntityManager; import javax.persistence.PersistenceContext; import javax.persistence.Query; import org.mifos.core.MifosRuntimeException; import org.mifos.user.domain.Office; import org.springframework.transaction.annotation.Transactional; /** * */ public class StandardOfficeDao implements OfficeDao { @PersistenceContext private EntityManager entityManager; @Override @Transactional(readOnly = true) public List<Office> getAll() { Query query = entityManager.createQuery("from Office"); return query.getResultList(); } @Override @Transactional(readOnly = true) public Office getHeadOffice() { Query query = entityManager .createQuery("select office from Office office where office.parentOffice IS NULL"); List<Office> result = query.getResultList(); if (result.isEmpty()) { throw new MifosRuntimeException("Built in head office not found."); } else if (result.size() > 1) { throw new MifosRuntimeException("Multiple head offices found."); } return result.get(0); } }