Java tutorial
/* * 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.core; /** * Interface to be implemented by transparent resource proxies that need to be * considered as equal to the underlying resource, for example for consistent * lookup key comparisons. Note that this interface does imply such special * semantics and does not constitute a general-purpose mixin! * * <p>Such wrappers will automatically be unwrapped for key comparisons in * {@link org.springframework.transaction.support.TransactionSynchronizationManager}. * * <p>Only fully transparent proxies, e.g. for redirection or service lookups, * are supposed to implement this interface. Proxies that decorate the target * object with new behavior, such as AOP proxies, do <i>not</i> qualify here! * * @author Juergen Hoeller * @since 2.5.4 * @see org.springframework.transaction.support.TransactionSynchronizationManager */ public interface InfrastructureProxy { /** * Return the underlying resource (never {@code null}). */ Object getWrappedObject(); }