001/* 002 * HA-JDBC: High-Availability JDBC 003 * Copyright (C) 2012 Paul Ferraro 004 * 005 * This program is free software: you can redistribute it and/or modify 006 * it under the terms of the GNU Lesser General Public License as published by 007 * the Free Software Foundation, either version 3 of the License, or 008 * (at your option) any later version. 009 * 010 * This program is distributed in the hope that it will be useful, 011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 013 * GNU Lesser General Public License for more details. 014 * 015 * You should have received a copy of the GNU Lesser General Public License 016 * along with this program. If not, see <http://www.gnu.org/licenses/>. 017 */ 018package net.sf.hajdbc.util; 019 020import java.security.AccessController; 021import java.security.PrivilegedAction; 022import java.security.PrivilegedExceptionAction; 023 024public class Security 025{ 026 public static <T> T run(PrivilegedAction<T> action) 027 { 028 return (System.getSecurityManager() != null) ? AccessController.doPrivileged(action) : action.run(); 029 } 030 031 public static <T> T run(PrivilegedExceptionAction<T> action) throws Exception 032 { 033 return (System.getSecurityManager() != null) ? AccessController.doPrivileged(action) : action.run(); 034 } 035 036 public static <T, E extends Exception> T run(PrivilegedExceptionAction<T> action, Class<E> exceptionClass) throws E 037 { 038 try 039 { 040 return (System.getSecurityManager() != null) ? AccessController.doPrivileged(action) : action.run(); 041 } 042 catch (Exception e) 043 { 044 throw exceptionClass.cast(e); 045 } 046 } 047 048 private Security() 049 { 050 // Hide constructor 051 } 052}