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1 package org.apache.torque.adapter; 2 3 /* ==================================================================== 4 * The Apache Software License, Version 1.1 5 * 6 * Copyright (c) 2001 The Apache Software Foundation. All rights 7 * reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in 18 * the documentation and/or other materials provided with the 19 * distribution. 20 * 21 * 3. The end-user documentation included with the redistribution, 22 * if any, must include the following acknowledgment: 23 * "This product includes software developed by the 24 * Apache Software Foundation (http://www.apache.org/)." 25 * Alternately, this acknowledgment may appear in the software itself, 26 * if and wherever such third-party acknowledgments normally appear. 27 * 28 * 4. The names "Apache" and "Apache Software Foundation" and 29 * "Apache Turbine" must not be used to endorse or promote products 30 * derived from this software without prior written permission. For 31 * written permission, please contact apache@apache.org. 32 * 33 * 5. Products derived from this software may not be called "Apache", 34 * "Apache Turbine", nor may "Apache" appear in their name, without 35 * prior written permission of the Apache Software Foundation. 36 * 37 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 38 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 39 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 40 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 41 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 42 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 43 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 44 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 45 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 46 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 47 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 48 * SUCH DAMAGE. 49 * ==================================================================== 50 * 51 * This software consists of voluntary contributions made by many 52 * individuals on behalf of the Apache Software Foundation. For more 53 * information on the Apache Software Foundation, please see 54 * <http://www.apache.org/>. 55 */ 56 57 import java.sql.Connection; 58 import java.sql.SQLException; 59 import java.sql.Statement; 60 61 /*** 62 * This code should be used for an Interbase database pool. 63 * 64 * @author <a href="mailto:frank@opticode.co.za">Frank Conradie</a> 65 * @version $Id: DBInterbase.java,v 1.7 2003/05/11 12:59:07 mpoeschl Exp $ 66 */ 67 public class DBInterbase extends DB 68 { 69 /*** 70 * This method is used to ignore case. 71 * 72 * @param in The string to transform to upper case. 73 * @return The upper case string. 74 */ 75 public String toUpperCase(String in) 76 { 77 return new StringBuffer("UPPER(").append(in).append(")").toString(); 78 } 79 80 /*** 81 * This method is used to ignore case. 82 * 83 * @param in The string whose case to ignore. 84 * @return The string in a case that can be ignored. 85 */ 86 public String ignoreCase(String in) 87 { 88 return new StringBuffer("UPPER(").append(in).append(")").toString(); 89 } 90 91 /*** 92 * This method is used to ignore case in an ORDER BY clause. 93 * Usually it is the same as ignoreCase, but some databases 94 * (Interbase for example) does not use the same SQL in ORDER BY 95 * and other clauses. 96 * 97 * @param in The string whose case to ignore. 98 * @return The string in a case that can be ignored. 99 */ 100 public String ignoreCaseInOrderBy(String in) 101 { 102 return in; 103 } 104 105 /*** 106 * Gets the string delimiter (usually '\''). 107 * 108 * @return The delimiter. 109 */ 110 public char getStringDelimiter() 111 { 112 return '\''; 113 } 114 115 /*** 116 * @see org.apache.torque.adapter.DB#getIDMethodType() 117 */ 118 public String getIDMethodType() 119 { 120 return NO_ID_METHOD; 121 } 122 123 /*** 124 * @see org.apache.torque.adapter.DB#getIDMethodSQL(Object obj) 125 */ 126 public String getIDMethodSQL(Object obj) 127 { 128 return null; 129 } 130 131 /*** 132 * Locks the specified table. 133 * 134 * @param con The JDBC connection to use. 135 * @param table The name of the table to lock. 136 * @exception SQLException No Statement could be created or executed. 137 */ 138 public void lockTable(Connection con, String table) throws SQLException 139 { 140 Statement statement = con.createStatement(); 141 142 StringBuffer stmt = new StringBuffer(); 143 stmt.append("SET TRANSACTION ") 144 .append("ISOLATION LEVEL READ COMMITTED ") 145 .append("NO RECORD_VERSION WAIT ") 146 .append("RESERVING ") 147 .append(table) 148 .append(" FOR PROTECTED WRITE"); 149 150 statement.executeQuery(stmt.toString()); 151 } 152 153 /*** 154 * Unlocks the specified table. 155 * 156 * @param con The JDBC connection to use. 157 * @param table The name of the table to unlock. 158 * @exception SQLException No Statement could be created or executed. 159 */ 160 public void unlockTable(Connection con, String table) throws SQLException 161 { 162 // Tables in Interbase are unlocked when a commit is issued. 163 // The user may have issued a commit but do it here to be 164 // sure. 165 con.commit(); 166 } 167 }

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