001/*
002 * Copyright 2002-2012 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.beans.factory.support;
018
019import java.security.AccessControlContext;
020import java.security.AccessController;
021
022/**
023 * Simple {@link SecurityContextProvider} implementation.
024 *
025 * @author Costin Leau
026 * @since 3.0
027 */
028public class SimpleSecurityContextProvider implements SecurityContextProvider {
029
030        private final AccessControlContext acc;
031
032
033        /**
034         * Construct a new {@code SimpleSecurityContextProvider} instance.
035         * <p>The security context will be retrieved on each call from the current
036         * thread.
037         */
038        public SimpleSecurityContextProvider() {
039                this(null);
040        }
041
042        /**
043         * Construct a new {@code SimpleSecurityContextProvider} instance.
044         * <p>If the given control context is null, the security context will be
045         * retrieved on each call from the current thread.
046         * @param acc access control context (can be {@code null})
047         * @see AccessController#getContext()
048         */
049        public SimpleSecurityContextProvider(AccessControlContext acc) {
050                this.acc = acc;
051        }
052
053
054        @Override
055        public AccessControlContext getAccessControlContext() {
056                return (this.acc != null ? acc : AccessController.getContext());
057        }
058
059}