1 /*
2 * Copyright 2018-2020 the original author or authors.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * https://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.springframework.data.jpa.util;
17
18 import org.springframework.beans.factory.DisposableBean;
19 import org.springframework.context.ApplicationContext;
20
21 /**
22 * Simple component to be registered as Spring bean to clear the {@link JpaMetamodel} cache to avoid a memory leak in
23 * applications bootstrapping multiple {@link ApplicationContext}s.
24 *
25 * @author Oliver Gierke
26 * @author Sylvère Richard
27 * @see org.springframework.data.jpa.repository.config.JpaRepositoryConfigExtension#registerBeansForRoot(org.springframework.beans.factory.support.BeanDefinitionRegistry,
28 * org.springframework.data.repository.config.RepositoryConfigurationSource)
29 */
30 class JpaMetamodelCacheCleanup implements DisposableBean {
31
32 /*
33 * (non-Javadoc)
34 * @see org.springframework.beans.factory.DisposableBean#destroy()
35 */
36 @Override
37 public void destroy() throws Exception {
38 JpaMetamodel.clear();
39 }
40 }
41