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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 Informix database pool. 63 * 64 * @author <a href="mailto:jon@latchkey.com">Jon S. Stevens</a> 65 * @author <a href="mailto:bpm@ec-group.com">Brian P Millett</a> 66 * @version $Id: DBInformix.java,v 1.6 2002/06/24 18:12:19 mpoeschl Exp $ 67 */ 68 public class DBInformix extends DB 69 { 70 /*** 71 * Empty constructor. 72 */ 73 protected DBInformix() 74 { 75 } 76 77 /*** 78 * This method is used to ignore case. Problem is that Informix 79 * does not have an UPPER function. So the best would be to do 80 * nothing. 81 * 82 * @param in The string to transform to upper case. 83 * @return The upper case string. 84 */ 85 public String toUpperCase(String in) 86 { 87 return in; 88 } 89 90 /*** 91 * This method is used to ignore case. Problem is that Informix 92 * does not have an UPPER function. So the best would be to do 93 * nothing. 94 * 95 * @param in The string whose case to ignore. 96 * @return The string in a case that can be ignored. 97 */ 98 public String ignoreCase(String in) 99 { 100 return in; 101 } 102 103 /*** 104 * @see org.apache.torque.adapter.DB#getIDMethodType() 105 */ 106 public String getIDMethodType() 107 { 108 return NO_ID_METHOD; 109 } 110 111 /*** 112 * @see org.apache.torque.adapter.DB#getIDMethodSQL(Object obj) 113 */ 114 public String getIDMethodSQL(Object obj) 115 { 116 return null; 117 } 118 119 /*** 120 * The method is used to lock a table. 121 * 122 * @param con The JDBC connection to use. 123 * @param table The name of the table to lock. 124 * @exception SQLException No Statement could be created or executed. 125 */ 126 public void lockTable(Connection con, String table) throws SQLException 127 { 128 Statement statement = con.createStatement(); 129 130 StringBuffer stmt = new StringBuffer(); 131 stmt.append("LOCK TABLE ") 132 .append(table) 133 .append(" IN EXCLUSIVE MODE"); 134 135 statement.executeQuery(stmt.toString()); 136 } 137 138 /*** 139 * The method is used to unlock a table. 140 * 141 * @param con The JDBC connection to use. 142 * @param table The name of the table to unlock. 143 * @exception SQLException No Statement could be created or executed. 144 */ 145 public void unlockTable(Connection con, String table) throws SQLException 146 { 147 // Tables in Informix are unlocked when a commit is issued. 148 // The user may have issued a commit but do it here to be 149 // sure. 150 con.commit(); 151 } 152 }

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