001/*-
002 * #%L
003 * HAPI FHIR JPA Server
004 * %%
005 * Copyright (C) 2014 - 2025 Smile CDR, Inc.
006 * %%
007 * Licensed under the Apache License, Version 2.0 (the "License");
008 * you may not use this file except in compliance with the License.
009 * You may obtain a copy of the License at
010 *
011 *      http://www.apache.org/licenses/LICENSE-2.0
012 *
013 * Unless required by applicable law or agreed to in writing, software
014 * distributed under the License is distributed on an "AS IS" BASIS,
015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016 * See the License for the specific language governing permissions and
017 * limitations under the License.
018 * #L%
019 */
020
021package ca.uhn.fhir.jpa.util;
022
023import org.springframework.aop.framework.Advised;
024import org.springframework.aop.support.AopUtils;
025
026/**
027 * Utility to get the Spring proxy object's target object
028 */
029public class SpringObjectCaster {
030
031        /**
032         * Retrieve the Spring proxy object's target object
033         * @param proxy
034         * @param clazz
035         * @param <T>
036         * @return
037         * @throws Exception
038         */
039        public static <T> T getTargetObject(Object proxy, Class<T> clazz) throws Exception {
040                while ((AopUtils.isJdkDynamicProxy(proxy))) {
041                        return clazz.cast(
042                                        getTargetObject(((Advised) proxy).getTargetSource().getTarget(), clazz));
043                }
044
045                return clazz.cast(proxy);
046        }
047}