org.springframework.data.jpa.repository.JpaContext Maven / Gradle / Ivy
/*
* Copyright 2015-2019 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.data.jpa.repository;
import javax.persistence.EntityManager;
/**
* Interface for components to provide useful information about the current JPA setup within the current
* {@link org.springframework.context.ApplicationContext}.
*
* @author Oliver Gierke
* @soundtrack Marcus Miller - Water Dancer (Afrodeezia)
* @since 1.9
*/
public interface JpaContext {
/**
* Returns the {@link EntityManager} managing the given domain type.
*
* @param managedType must not be {@literal null}.
* @return the {@link EntityManager} that manages the given type, will never be {@literal null}.
* @throws IllegalArgumentException if the given type is not a JPA managed one no unique {@link EntityManager} managing this type can be resolved.
*/
EntityManager getEntityManagerByManagedType(Class managedType);
}