spring-batch AbstractJpaQueryProvider 源码
spring-batch AbstractJpaQueryProvider 代码
文件路径：/spring-batch-infrastructure/src/main/java/org/springframework/batch/item/database/orm/AbstractJpaQueryProvider.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.item.database.orm;
import jakarta.persistence.EntityManager;
import jakarta.persistence.Query;
import org.springframework.beans.factory.InitializingBean;
/**
* <p>
* Abstract JPA Query Provider to serve as a base class for all JPA {@link Query}
* providers.
* </p>
*
* @author Anatoly Polinsky
* @author Dave Syer
* @author Mahmoud Ben Hassine
* @since 2.1
*/
public abstract class AbstractJpaQueryProvider implements JpaQueryProvider, InitializingBean {
private EntityManager entityManager;
/**
* <p>
* Public setter to override the entityManager that was created by this
* {@link HibernateQueryProvider}. This is currently needed to allow
* {@link HibernateQueryProvider} to participate in a user's managed transaction.
* </p>
* @param entityManager EntityManager to use
*/
@Override
public void setEntityManager(EntityManager entityManager) {
this.entityManager = entityManager;
}
/**
* <p>
* Getter for {@link EntityManager}
* </p>
* @return entityManager the injected {@link EntityManager}
*/
protected EntityManager getEntityManager() {
return entityManager;
}
}
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