spring-batch JdbcTradeDao 源码
spring-batch JdbcTradeDao 代码
文件路径：/spring-batch-samples/src/main/java/org/springframework/batch/sample/domain/trade/internal/JdbcTradeDao.java
/*
* Copyright 2006-2021 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
*
* https://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.springframework.batch.sample.domain.trade.internal;
import javax.sql.DataSource;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.batch.sample.domain.trade.Trade;
import org.springframework.batch.sample.domain.trade.TradeDao;
import org.springframework.jdbc.core.JdbcOperations;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.support.incrementer.DataFieldMaxValueIncrementer;
/**
* Writes a Trade object to a database
*
* @author Robert Kasanicky
*/
public class JdbcTradeDao implements TradeDao {
private Log log = LogFactory.getLog(JdbcTradeDao.class);
/**
* template for inserting a row
*/
private static final String INSERT_TRADE_RECORD = "INSERT INTO TRADE (id, version, isin, quantity, price, customer) VALUES (?, 0, ?, ? ,?, ?)";
/**
* handles the processing of SQL query
*/
private JdbcOperations jdbcTemplate;
/**
* database is not expected to be setup for auto increment
*/
private DataFieldMaxValueIncrementer incrementer;
/**
* @see TradeDao
*/
@Override
public void writeTrade(Trade trade) {
Long id = incrementer.nextLongValue();
if (log.isDebugEnabled()) {
log.debug("Processing: " + trade);
}
jdbcTemplate.update(INSERT_TRADE_RECORD, id, trade.getIsin(), trade.getQuantity(), trade.getPrice(),
trade.getCustomer());
}
public void setDataSource(DataSource dataSource) {
this.jdbcTemplate = new JdbcTemplate(dataSource);
}
public void setIncrementer(DataFieldMaxValueIncrementer incrementer) {
this.incrementer = incrementer;
}
}
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