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 org.openmeetings.app.data.user; import java.util.Date; import java.util.List; import javax.persistence.EntityManager; import javax.persistence.PersistenceContext; import javax.persistence.TypedQuery; import org.openmeetings.app.OpenmeetingsVariables; import org.openmeetings.app.persistence.beans.adresses.States; import org.red5.logging.Red5LoggerFactory; import org.slf4j.Logger; import org.springframework.transaction.annotation.Transactional; /** * * @author swagner * */ @Transactional public class Statemanagement { private static final Logger log = Red5LoggerFactory.getLogger(Statemanagement.class, OpenmeetingsVariables.webAppRootKey); @PersistenceContext private EntityManager em; /** * adds a new State to the states table with no short name and code * * @param name * @return the id of the new state or null if an error occurred */ public Long addState(String name) { return addState(name, "", 0); } /** * adds a new State to the states table * * @param name the name of the country * @param shortName the short name of the country * @param code the code of the country * @return the id of the new state or null if an error occurred */ public Long addState(String name, String shortName, int code) { try { States st = new States(); st.setName(name); st.setShortName(shortName); st.setCode(code); st.setStarttime(new Date()); st.setDeleted("false"); st = em.merge(st); Long id = st.getState_id(); log.debug("added id " + id); return id; } catch (Exception ex2) { log.error("addState", ex2); } return null; } /** * selects a state by its id * * @param state_id * @return the state-object or null */ public States getStateById(long state_id) { try { TypedQuery<States> query = em.createQuery( "select c from States as c where c.state_id = :state_id AND c.deleted <> :deleted", States.class); query.setParameter("state_id", state_id); query.setParameter("deleted", "true"); List<States> ll = query.getResultList(); if (ll.size() > 0) { return ll.get(0); } } catch (Exception ex2) { log.error("getStateById", ex2); } return null; } /** * Get all state-Object * * @return List of State Objects or null */ public List<States> getStates() { try { TypedQuery<States> query = em.createQuery("select c from States as c where c.deleted <> :deleted", States.class); query.setParameter("deleted", "true"); List<States> ll = query.getResultList(); return ll; } catch (Exception ex2) { log.error("getStates", ex2); } return null; } }