Coverage report

  %line %branch
org.apache.torque.adapter.DBDerby
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 1  
 package org.apache.torque.adapter;
 2  
 
 3  
 /*
 4  
  * Licensed to the Apache Software Foundation (ASF) under one
 5  
  * or more contributor license agreements.  See the NOTICE file
 6  
  * distributed with this work for additional information
 7  
  * regarding copyright ownership.  The ASF licenses this file
 8  
  * to you under the Apache License, Version 2.0 (the
 9  
  * "License"); you may not use this file except in compliance
 10  
  * with the License.  You may obtain a copy of the License at
 11  
  *
 12  
  *   http://www.apache.org/licenses/LICENSE-2.0
 13  
  *
 14  
  * Unless required by applicable law or agreed to in writing,
 15  
  * software distributed under the License is distributed on an
 16  
  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 17  
  * KIND, either express or implied.  See the License for the
 18  
  * specific language governing permissions and limitations
 19  
  * under the License.
 20  
  */
 21  
 
 22  
 import java.sql.Connection;
 23  
 import java.sql.SQLException;
 24  
 import java.sql.Statement;
 25  
 
 26  
 /**
 27  
  * This is used to connect to an embedded Apache Derby Database using
 28  
  * the supplied JDBC driver.
 29  
  *
 30  
  * @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a>
 31  
  * @version $Id: DBDerby.java 473821 2006-11-11 22:37:25Z tv $
 32  
  */
 33  
 public class DBDerby extends AbstractDBAdapter
 34  
 {
 35  
     /**
 36  
      * Serial version
 37  
      */
 38  
     private static final long serialVersionUID = 6265962681516206415L;
 39  
 
 40  
     /**
 41  
      * Empty constructor.
 42  
      */
 43  
     protected DBDerby()
 44  0
     {
 45  0
     }
 46  
 
 47  
     /**
 48  
      * This method is used to ignore case.
 49  
      *
 50  
      * @param str The string to transform to upper case.
 51  
      * @return The upper case string.
 52  
      */
 53  
     public String toUpperCase(String str)
 54  
     {
 55  0
         return new StringBuffer("UPPER(")
 56  
                 .append(str)
 57  
                 .append(")")
 58  
                 .toString();
 59  
     }
 60  
 
 61  
     /**
 62  
      * This method is used to ignore case.
 63  
      *
 64  
      * @param str The string whose case to ignore.
 65  
      * @return The string in a case that can be ignored.
 66  
      */
 67  
     public String ignoreCase(String str)
 68  
     {
 69  0
         return toUpperCase(str);
 70  
     }
 71  
 
 72  
     /**
 73  
      * @see org.apache.torque.adapter.DB#getIDMethodType()
 74  
      */
 75  
     public String getIDMethodType()
 76  
     {
 77  0
         return AUTO_INCREMENT;
 78  
     }
 79  
 
 80  
     /**
 81  
      * Returns the SQL to get the database key of the last row
 82  
      * inserted, which in this case is
 83  
      * <code>VALUES IDENTITY_VAL_LOCAL()</code>.
 84  
      *
 85  
      * @see org.apache.torque.adapter.DB#getIDMethodSQL(Object obj)
 86  
      */
 87  
     public String getIDMethodSQL(Object obj)
 88  
     {
 89  0
         return "VALUES IDENTITY_VAL_LOCAL()";
 90  
     }
 91  
 
 92  
     /**
 93  
      * Locks the specified table.
 94  
      *
 95  
      * @param con The JDBC connection to use.
 96  
      * @param table The name of the table to lock.
 97  
      * @exception SQLException No Statement could be created or executed.
 98  
      */
 99  
     public void lockTable(Connection con, String table)
 100  
             throws SQLException
 101  
     {
 102  0
         Statement statement = con.createStatement();
 103  0
         StringBuffer stmt = new StringBuffer();
 104  0
         stmt.append("LOCK TABLE ")
 105  
                 .append(table).append(" IN EXCLUSIVE MODE");
 106  0
         statement.executeUpdate(stmt.toString());
 107  0
     }
 108  
 
 109  
     /**
 110  
      * Unlocks the specified table.
 111  
      *
 112  
      * @param con The JDBC connection to use.
 113  
      * @param table The name of the table to unlock.
 114  
      * @exception SQLException No Statement could be created or executed.
 115  
      */
 116  
     public void unlockTable(Connection con, String table)
 117  
             throws SQLException
 118  
     {
 119  0
     }
 120  
 
 121  
     /**
 122  
      * Whether backslashes (\) should be escaped in explicit SQL strings.
 123  
      * If true is returned, a BACKSLASH will be changed to "\\". If false
 124  
      * is returned, a BACKSLASH will be left as "\".
 125  
      *
 126  
      * As derby does not need escaping of Backslashes, this method always
 127  
      * returns false.
 128  
      *
 129  
      * @return true if the database needs to escape backslashes
 130  
      *         in SqlExpressions.
 131  
      */
 132  
 
 133  
      public boolean escapeText()
 134  
      {
 135  0
          return false;
 136  
      }
 137  
 
 138  
      /**
 139  
      * Whether an escape clause in like should be used.
 140  
      * Example : select * from AUTHOR where AUTHOR.NAME like '\_%' ESCAPE '\';
 141  
      *
 142  
      * Derby needs this, so this implementation always returns
 143  
      * <code>true</code>.
 144  
      *
 145  
      * @return whether the escape clause should be appended or not.
 146  
      */
 147  
     public boolean useEscapeClauseForLike()
 148  
     {
 149  0
         return true;
 150  
     }
 151  
 }

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