spring-batch HibernateAwareCustomerCreditItemWriter 源码
spring-batch HibernateAwareCustomerCreditItemWriter 代码
文件路径：/spring-batch-samples/src/main/java/org/springframework/batch/sample/domain/trade/internal/HibernateAwareCustomerCreditItemWriter.java
/*
* Copyright 2006-2013 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
*
* 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 java.util.List;
import org.hibernate.SessionFactory;
import org.springframework.batch.item.ItemWriter;
import org.springframework.batch.sample.domain.trade.CustomerCredit;
import org.springframework.batch.sample.domain.trade.CustomerCreditDao;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.util.Assert;
/**
* Delegates writing to a custom DAO and flushes + clears hibernate session to fulfill the
* {@link ItemWriter} contract.
*
* @author Robert Kasanicky
* @author Michael Minella
*/
public class HibernateAwareCustomerCreditItemWriter implements ItemWriter<CustomerCredit>, InitializingBean {
private CustomerCreditDao dao;
private SessionFactory sessionFactory;
@Override
public void write(List<? extends CustomerCredit> items) throws Exception {
for (CustomerCredit credit : items) {
dao.writeCredit(credit);
}
try {
sessionFactory.getCurrentSession().flush();
}
finally {
// this should happen automatically on commit, but to be on the safe
// side...
sessionFactory.getCurrentSession().clear();
}
}
public void setDao(CustomerCreditDao dao) {
this.dao = dao;
}
public void setSessionFactory(SessionFactory sessionFactory) {
this.sessionFactory = sessionFactory;
}
@Override
public void afterPropertiesSet() throws Exception {
Assert.state(sessionFactory != null, "Hibernate SessionFactory is required");
Assert.notNull(dao, "Delegate DAO must be set");
}
}
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