spring PersistenceUnitManager 源码
spring PersistenceUnitManager 代码
文件路径：/spring-orm/src/main/java/org/springframework/orm/jpa/persistenceunit/PersistenceUnitManager.java
/*
* Copyright 2002-2012 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.persistenceunit;
import jakarta.persistence.spi.PersistenceUnitInfo;
/**
* Interface that defines an abstraction for finding and managing
* JPA PersistenceUnitInfos. Used by
* {@link org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean}
* in order to obtain a {@link jakarta.persistence.spi.PersistenceUnitInfo}
* for building a concrete {@link jakarta.persistence.EntityManagerFactory}.
*
* <p>Obtaining a PersistenceUnitInfo instance is an exclusive process.
* A PersistenceUnitInfo instance is not available for further calls
* anymore once it has been obtained.
*
* @author Juergen Hoeller
* @since 2.0
* @see DefaultPersistenceUnitManager
* @see org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean#setPersistenceUnitManager
*/
public interface PersistenceUnitManager {
/**
* Obtain the default PersistenceUnitInfo from this manager.
* @return the PersistenceUnitInfo (never {@code null})
* @throws IllegalStateException if there is no default PersistenceUnitInfo defined
* or it has already been obtained
*/
PersistenceUnitInfo obtainDefaultPersistenceUnitInfo() throws IllegalStateException;
/**
* Obtain the specified PersistenceUnitInfo from this manager.
* @param persistenceUnitName the name of the desired persistence unit
* @return the PersistenceUnitInfo (never {@code null})
* @throws IllegalArgumentException if no PersistenceUnitInfo with the given
* name is defined
* @throws IllegalStateException if the PersistenceUnitInfo with the given
* name has already been obtained
*/
PersistenceUnitInfo obtainPersistenceUnitInfo(String persistenceUnitName)
throws IllegalArgumentException, IllegalStateException;
}
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