spring EntityManagerHolder 源码
spring EntityManagerHolder 代码
文件路径：/spring-orm/src/main/java/org/springframework/orm/jpa/EntityManagerHolder.java
/*
* Copyright 2002-2018 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.orm.jpa;
import jakarta.persistence.EntityManager;
import org.springframework.lang.Nullable;
import org.springframework.transaction.SavepointManager;
import org.springframework.transaction.support.ResourceHolderSupport;
import org.springframework.util.Assert;
/**
* Resource holder wrapping a JPA {@link EntityManager}.
* {@link JpaTransactionManager} binds instances of this class to the thread,
* for a given {@link jakarta.persistence.EntityManagerFactory}.
*
* <p>Also serves as a base class for {@link org.springframework.orm.hibernate5.SessionHolder},
* as of 5.1.
*
* <p>Note: This is an SPI class, not intended to be used by applications.
*
* @author Juergen Hoeller
* @since 2.0
* @see JpaTransactionManager
* @see EntityManagerFactoryUtils
*/
public class EntityManagerHolder extends ResourceHolderSupport {
@Nullable
private final EntityManager entityManager;
private boolean transactionActive;
@Nullable
private SavepointManager savepointManager;
public EntityManagerHolder(@Nullable EntityManager entityManager) {
this.entityManager = entityManager;
}
public EntityManager getEntityManager() {
Assert.state(this.entityManager != null, "No EntityManager available");
return this.entityManager;
}
protected void setTransactionActive(boolean transactionActive) {
this.transactionActive = transactionActive;
}
protected boolean isTransactionActive() {
return this.transactionActive;
}
protected void setSavepointManager(@Nullable SavepointManager savepointManager) {
this.savepointManager = savepointManager;
}
@Nullable
protected SavepointManager getSavepointManager() {
return this.savepointManager;
}
@Override
public void clear() {
super.clear();
this.transactionActive = false;
this.savepointManager = null;
}
}
相关信息
相关文章
spring AbstractEntityManagerFactoryBean 源码
spring EntityManagerFactoryAccessor 源码
spring EntityManagerFactoryInfo 源码
spring EntityManagerFactoryUtils 源码
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