Coverage report

  %line %branch
org.apache.torque.engine.platform.PlatformFactory
77% 
92% 

 1  
 package org.apache.torque.engine.platform;
 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.util.HashMap;
 23  
 
 24  
 import org.apache.commons.logging.Log;
 25  
 import org.apache.commons.logging.LogFactory;
 26  
 
 27  
 /**
 28  
  * Factory class responsible to create Platform objects that
 29  
  * define RDBMS platform specific behaviour.
 30  
  *
 31  
  * @author Thomas Mahler
 32  
  * @author <a href="mailto:mpoeschl@marmot.at">Martin Poeschl</a>
 33  
  * @version $Id: PlatformFactory.java 473814 2006-11-11 22:30:30Z tv $
 34  
  */
 35  0
 public class PlatformFactory
 36  
 {
 37  70
     private static HashMap platforms = new HashMap();
 38  140
     private static Log log = LogFactory.getLog(PlatformFactory.class);
 39  
 
 40  
     /**
 41  
      * Returns the Platform for a platform name.
 42  
      *
 43  
      * @param dbms name of the platform
 44  
      */
 45  
     public static Platform getPlatformFor(String dbms)
 46  
     {
 47  25788
         Platform result = null;
 48  25788
         String platformName = null;
 49  
 
 50  25788
         result = (Platform) getPlatforms().get(dbms);
 51  25788
         if (result == null)
 52  
         {
 53  
             try
 54  
             {
 55  70
                 platformName = getClassnameFor(dbms);
 56  70
                 Class platformClass = Class.forName(platformName);
 57  70
                 result = (Platform) platformClass.newInstance();
 58  
 
 59  
             }
 60  0
             catch (Throwable t)
 61  
             {
 62  0
                 log.warn("problems with platform " + platformName
 63  
                         + ": " + t.getMessage());
 64  0
                 log.warn("Torque will use PlatformDefaultImpl instead");
 65  
 
 66  0
                 result = new PlatformDefaultImpl();
 67  70
             }
 68  70
             getPlatforms().put(dbms, result); // cache the Platform
 69  
         }
 70  25788
         return result;
 71  
     }
 72  
 
 73  
     /**
 74  
      * compute the name of the concrete Class representing the Platform
 75  
      * specified by <code>platform</code>
 76  
      *
 77  
      * @param platform the name of the platform as specified in the repository
 78  
      */
 79  
     private static String getClassnameFor(String platform)
 80  
     {
 81  70
         String pf = "Default";
 82  70
         if (platform != null)
 83  
         {
 84  70
             pf = platform;
 85  
         }
 86  70
         return "org.apache.torque.engine.platform.Platform" + pf.substring(0, 1).toUpperCase() + pf.substring(1) + "Impl";
 87  
     }
 88  
 
 89  
     /**
 90  
      * Gets the platforms.
 91  
      *
 92  
      * @return Returns a HashMap
 93  
      */
 94  
     private static HashMap getPlatforms()
 95  
     {
 96  25858
         return platforms;
 97  
     }
 98  
 }

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