Java tutorial
/* * Copyright 2013 the original author or authors. * * 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. */ package com.exp.tracker.services.impl; import java.util.ArrayList; import java.util.List; import javax.faces.model.SelectItem; import javax.persistence.EntityManager; import javax.persistence.PersistenceContext; import javax.persistence.Query; import org.springframework.stereotype.Repository; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; import com.exp.tracker.data.entities.RoleEntity; import com.exp.tracker.services.api.RoleService; @Service("roleService") @Repository public class JpaRoleService implements RoleService { private EntityManager em; @PersistenceContext public void setEntityManager(EntityManager em) { this.em = em; } @SuppressWarnings("unchecked") @Transactional(readOnly = true) public List<RoleEntity> getRoles() { Query queryGetRoles = em.createNamedQuery("getRoles"); return queryGetRoles.getResultList(); } public List<SelectItem> getRolesSelectItems() { List<SelectItem> rl = new ArrayList<SelectItem>(); for (RoleEntity re : getRoles()) { rl.add(new SelectItem(re.getRole(), re.getRole())); } return rl; } }