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}