001/*
002 * Copyright 2006-2007 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.batch.sample.domain.trade.internal;
018
019import java.math.BigDecimal;
020import java.sql.ResultSet;
021import java.sql.SQLException;
022import java.util.List;
023
024import org.springframework.batch.sample.domain.trade.CustomerCredit;
025import org.springframework.batch.sample.domain.trade.CustomerDao;
026import org.springframework.jdbc.core.RowMapper;
027import org.springframework.jdbc.core.support.JdbcDaoSupport;
028import org.springframework.jdbc.support.incrementer.DataFieldMaxValueIncrementer;
029
030/**
031 * @author Lucas Ward
032 *
033 */
034public class JdbcCustomerDao extends JdbcDaoSupport implements CustomerDao{
035
036        private static final String GET_CUSTOMER_BY_NAME = "SELECT ID, NAME, CREDIT from CUSTOMER where NAME = ?";
037        private static final String INSERT_CUSTOMER = "INSERT into CUSTOMER(ID, NAME, CREDIT) values(?,?,?)";
038        private static final String UPDATE_CUSTOMER = "UPDATE CUSTOMER set CREDIT = ? where NAME = ?";
039        
040        private DataFieldMaxValueIncrementer incrementer;
041        
042        public void setIncrementer(DataFieldMaxValueIncrementer incrementer) {
043                this.incrementer = incrementer;
044        }
045        
046        @Override
047        public CustomerCredit getCustomerByName(String name) {
048                
049                List<CustomerCredit> customers = getJdbcTemplate().query(GET_CUSTOMER_BY_NAME, new Object[]{name}, 
050                                
051                                new RowMapper<CustomerCredit>(){
052
053                        @Override
054                        public CustomerCredit mapRow(ResultSet rs, int rowNum) throws SQLException {
055                                CustomerCredit customer = new CustomerCredit();
056                                customer.setName(rs.getString("NAME"));
057                                customer.setId(rs.getInt("ID"));
058                                customer.setCredit(rs.getBigDecimal("CREDIT"));
059                                return customer;
060                        }
061                        
062                });
063        
064                if(customers.size() == 0){
065                        return null;
066                }
067                else{
068                        return customers.get(0);
069                }
070                
071        }
072
073        @Override
074        public void insertCustomer(String name, BigDecimal credit) {
075                
076                getJdbcTemplate().update(INSERT_CUSTOMER, new Object[]{incrementer.nextIntValue(), name, credit});
077        }
078
079        @Override
080        public void updateCustomer(String name, BigDecimal credit) {
081                getJdbcTemplate().update(UPDATE_CUSTOMER, new Object[]{credit, name});
082        }
083
084}