com.bank.repository.internal.JdbcAccountRepository.java Source code

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Here is the source code for com.bank.repository.internal.JdbcAccountRepository.java

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/*
 * Copyright 2002-2011 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.bank.repository.internal;

import java.sql.ResultSet;
import java.sql.SQLException;

import javax.sql.DataSource;

import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowMapper;

import com.bank.domain.Account;
import com.bank.repository.AccountRepository;

public class JdbcAccountRepository implements AccountRepository {

    private final JdbcTemplate jdbcTemplate;

    public JdbcAccountRepository(DataSource dataSource) {
        jdbcTemplate = new JdbcTemplate(dataSource);
    }

    @Override
    public Account findById(String srcAcctId) {
        return jdbcTemplate.queryForObject("select id, balance from account where id = ?", new AccountRowMapper(),
                srcAcctId);
    }

    @Override
    public void updateBalance(Account dstAcct) {
        jdbcTemplate.update("update account set balance = ? where id = ?", dstAcct.getBalance(), dstAcct.getId());
    }

    private static class AccountRowMapper implements RowMapper<Account> {

        @Override
        public Account mapRow(ResultSet rs, int rowNum) throws SQLException {
            return new Account(rs.getString("id"), rs.getDouble("balance"));
        }

    }

}