Java tutorial
/* * #%L * BroadleafCommerce Framework * %% * Copyright (C) 2009 - 2013 Broadleaf Commerce * %% * 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. * #L% */ package org.broadleafcommerce.core.offer.dao; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.broadleafcommerce.common.persistence.EntityConfiguration; import org.broadleafcommerce.common.util.dao.TypedQueryBuilder; import org.broadleafcommerce.core.offer.domain.OfferAudit; import org.broadleafcommerce.core.offer.domain.OfferAuditImpl; import org.springframework.stereotype.Repository; import javax.annotation.Resource; import javax.persistence.EntityManager; import javax.persistence.PersistenceContext; import javax.persistence.TypedQuery; @Repository("blOfferAuditDao") public class OfferAuditDaoImpl implements OfferAuditDao { protected static final Log LOG = LogFactory.getLog(OfferAuditDaoImpl.class); @PersistenceContext(unitName = "blPU") protected EntityManager em; @Resource(name = "blEntityConfiguration") protected EntityConfiguration entityConfiguration; @Override public OfferAudit create() { return ((OfferAudit) entityConfiguration.createEntityInstance(OfferAudit.class.getName())); } @Override public void delete(final OfferAudit offerAudit) { OfferAudit loa = offerAudit; if (!em.contains(loa)) { loa = readAuditById(offerAudit.getId()); } em.remove(loa); } @Override public OfferAudit save(final OfferAudit offerAudit) { return em.merge(offerAudit); } @Override public OfferAudit readAuditById(final Long offerAuditId) { return em.find(OfferAuditImpl.class, offerAuditId); } @Override public Long countUsesByCustomer(Long customerId, Long offerId) { TypedQuery<Long> query = new TypedQueryBuilder<OfferAudit>(OfferAudit.class, "offerAudit") .addRestriction("offerAudit.customerId", "=", customerId) .addRestriction("offerAudit.offerId", "=", offerId).toCountQuery(em); Long result = query.getSingleResult(); return result; } @Override public Long countOfferCodeUses(Long offerCodeId) { TypedQuery<Long> query = new TypedQueryBuilder<OfferAudit>(OfferAudit.class, "offerAudit") .addRestriction("offerAudit.offerCodeId", "=", offerCodeId).toCountQuery(em); Long result = query.getSingleResult(); return result; } }