001 /* 002 * Copyright (C) 2003-2009 eXo Platform SAS. 003 * 004 * This is free software; you can redistribute it and/or modify it 005 * under the terms of the GNU Lesser General Public License as 006 * published by the Free Software Foundation; either version 2.1 of 007 * the License, or (at your option) any later version. 008 * 009 * This software is distributed in the hope that it will be useful, 010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012 * Lesser General Public License for more details. 013 * 014 * You should have received a copy of the GNU Lesser General Public 015 * License along with this software; if not, write to the Free 016 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 017 * 02110-1301 USA, or see the FSF site: http://www.fsf.org. 018 */ 019 package org.crsh.util; 020 021 import javax.naming.Context; 022 import javax.naming.NamingException; 023 import java.io.Closeable; 024 import java.io.IOException; 025 import java.net.Socket; 026 import java.sql.Connection; 027 import java.sql.ResultSet; 028 import java.sql.SQLException; 029 import java.sql.Statement; 030 031 /** 032 * @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a> 033 * @version $Revision$ 034 */ 035 public class Safe { 036 037 public static void close(Socket socket) { 038 if (socket != null) { 039 try { 040 socket.close(); 041 } 042 catch (IOException ignore) { 043 } 044 } 045 } 046 047 public static void close(Closeable closeable) { 048 if (closeable != null) { 049 try { 050 closeable.close(); 051 } 052 catch (IOException ignore) { 053 } 054 } 055 } 056 057 public static void close(Connection connection) { 058 if (connection != null) { 059 try { 060 connection.close(); 061 } 062 catch (SQLException ignore) { 063 } 064 } 065 } 066 067 public static void close(Statement statement) { 068 if (statement != null) { 069 try { 070 statement.close(); 071 } 072 catch (SQLException ignore) { 073 } 074 } 075 } 076 077 public static void close(ResultSet rs) { 078 if (rs != null) { 079 try { 080 rs.close(); 081 } 082 catch (SQLException ignore) { 083 } 084 } 085 } 086 087 public static void close(Context rs) { 088 if (rs != null) { 089 try { 090 rs.close(); 091 } 092 catch (NamingException ignore) { 093 } 094 } 095 } 096 097 public static <T extends Throwable> void rethrow(Class<T> throwableClass, Throwable cause) throws T { 098 T throwable; 099 100 // 101 try { 102 throwable = throwableClass.newInstance(); 103 } 104 catch (Exception e) { 105 throw new AssertionError(e); 106 } 107 108 // 109 throwable.initCause(cause); 110 111 // 112 throw throwable; 113 } 114 115 public static boolean equals(Object o1, Object o2) { 116 return o1 == null ? o2 == null : (o2 != null && o1.equals(o2)); 117 } 118 119 public static boolean notEquals(Object o1, Object o2) { 120 return !equals(o1, o2); 121 } 122 }