Coverage report

  %line %branch
org.apache.turbine.services.assemblerbroker.util.java.JavaBaseFactory
71% 
92% 

 1  
 package org.apache.turbine.services.assemblerbroker.util.java;
 2  
 
 3  
 /*
 4  
  * Copyright 2001-2005 The Apache Software Foundation.
 5  
  *
 6  
  * Licensed under the Apache License, Version 2.0 (the "License")
 7  
  * you may not use this file except in compliance with the License.
 8  
  * You may obtain a copy of the License at
 9  
  *
 10  
  *     http://www.apache.org/licenses/LICENSE-2.0
 11  
  *
 12  
  * Unless required by applicable law or agreed to in writing, software
 13  
  * distributed under the License is distributed on an "AS IS" BASIS,
 14  
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 15  
  * See the License for the specific language governing permissions and
 16  
  * limitations under the License.
 17  
  */
 18  
 
 19  
 import java.util.Collections;
 20  
 import java.util.HashMap;
 21  
 import java.util.Iterator;
 22  
 import java.util.List;
 23  
 import java.util.Map;
 24  
 
 25  
 import org.apache.commons.lang.StringUtils;
 26  
 import org.apache.commons.logging.Log;
 27  
 import org.apache.commons.logging.LogFactory;
 28  
 
 29  
 import org.apache.turbine.Turbine;
 30  
 import org.apache.turbine.TurbineConstants;
 31  
 import org.apache.turbine.modules.Assembler;
 32  
 import org.apache.turbine.modules.GenericLoader;
 33  
 import org.apache.turbine.services.assemblerbroker.util.AssemblerFactory;
 34  
 import org.apache.turbine.util.ObjectUtils;
 35  
 
 36  
 /**
 37  
  * A screen factory that attempts to load a java class from
 38  
  * the module packages defined in the TurbineResource.properties.
 39  
  *
 40  
  * @author <a href="mailto:leon@opticode.co.za">Leon Messerschmidt</a>
 41  
  * @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a>
 42  
  * @version $Id: JavaBaseFactory.java 264148 2005-08-29 14:21:04Z henning $
 43  
  */
 44  360
 public abstract class JavaBaseFactory
 45  
     implements AssemblerFactory
 46  
 {
 47  
     /** A vector of packages. */
 48  60
     private static List packages =
 49  
         Turbine.getConfiguration().getList(TurbineConstants.MODULE_PACKAGES);
 50  
 
 51  
     /** Logging */
 52  240
     protected Log log = LogFactory.getLog(this.getClass());
 53  
 
 54  
     /**
 55  
      * A cache for previously obtained Class instances, which we keep in order
 56  
      * to reduce the Class.forName() overhead (which can be sizable).
 57  
      */
 58  240
     private Map classCache = Collections.synchronizedMap(new HashMap());
 59  
 
 60  
     static
 61  
     {
 62  40
         ObjectUtils.addOnce(packages, GenericLoader.getBasePackage());
 63  20
     }
 64  
 
 65  
     /**
 66  
      * Get an Assembler.
 67  
      *
 68  
      * @param packageName java package name
 69  
      * @param name name of the requested Assembler
 70  
      * @return an Assembler
 71  
      */
 72  
     public Assembler getAssembler(String packageName, String name)
 73  
     {
 74  138
         Assembler assembler = null;
 75  
 
 76  138
         log.debug("Class Fragment is " + name);
 77  
 
 78  138
         if (StringUtils.isNotEmpty(name))
 79  
         {
 80  333
             for (Iterator it = packages.iterator(); it.hasNext();)
 81  
             {
 82  276
                 StringBuffer className = new StringBuffer();
 83  
 
 84  276
                 className.append(it.next());
 85  276
                 className.append('.');
 86  276
                 className.append(packageName);
 87  276
                 className.append('.');
 88  276
                 className.append(name);
 89  
 
 90  276
                 log.debug("Trying " + className);
 91  
 
 92  
                 try
 93  
                 {
 94  276
                     Class servClass = (Class) classCache.get(className);
 95  276
                     if(servClass == null)
 96  
                     {
 97  276
                         servClass = Class.forName(className.toString());
 98  24
                         classCache.put(className, servClass);
 99  
                     }
 100  24
                     assembler = (Assembler) servClass.newInstance();
 101  24
                     break; // for()
 102  
                 }
 103  126
                 catch (ClassNotFoundException cnfe)
 104  
                 {
 105  
                     // Do this so we loop through all the packages.
 106  252
                     log.debug(className + ": Not found");
 107  126
                 }
 108  0
                 catch (NoClassDefFoundError ncdfe)
 109  
                 {
 110  
                     // Do this so we loop through all the packages.
 111  0
                     log.debug(className + ": No Class Definition found");
 112  
                 }
 113  0
                 catch (ClassCastException cce)
 114  
                 {
 115  
                     // This means trouble!
 116  
                     // Alternatively we can throw this exception so
 117  
                     // that it will appear on the client browser
 118  0
                     log.error("Could not load "+className, cce);
 119  0
                     break; // for()
 120  
                 }
 121  0
                 catch (InstantiationException ine)
 122  
                 {
 123  
                     // This means trouble!
 124  
                     // Alternatively we can throw this exception so
 125  
                     // that it will appear on the client browser
 126  0
                     log.error("Could not load "+className, ine);
 127  0
                     break; // for()
 128  
                 }
 129  0
                 catch (IllegalAccessException ilae)
 130  
                 {
 131  
                     // This means trouble!
 132  
                     // Alternatively we can throw this exception so
 133  
                     // that it will appear on the client browser
 134  0
                     log.error("Could not load "+className, ilae);
 135  0
                     break; // for()
 136  252
                 }
 137  
                 // With ClassCastException, InstantiationException we hit big problems
 138  
             }
 139  
         }
 140  138
         log.debug("Returning: " + assembler);
 141  
 
 142  138
         return assembler;
 143  
     }
 144  
 }

This report is generated by jcoverage, Maven and Maven JCoverage Plugin.