Coverage Report - org.mule.module.xml.transformer.AbstractXStreamTransformer
 
Classes in this File Line Coverage Branch Coverage Complexity
AbstractXStreamTransformer
0%
0/46
0%
0/8
0
 
 1  
 /*
 2  
  * $Id: AbstractXStreamTransformer.java 19191 2010-08-25 21:05:23Z tcarlson $
 3  
  * --------------------------------------------------------------------------------------
 4  
  * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
 5  
  *
 6  
  * The software in this package is published under the terms of the CPAL v1.0
 7  
  * license, a copy of which has been included with this distribution in the
 8  
  * LICENSE.txt file.
 9  
  */
 10  
 
 11  
 package org.mule.module.xml.transformer;
 12  
 
 13  
 import org.mule.api.MuleEvent;
 14  
 import org.mule.api.lifecycle.InitialisationException;
 15  
 import org.mule.api.transformer.TransformerException;
 16  
 import org.mule.api.transformer.TransformerMessagingException;
 17  
 import org.mule.config.i18n.MessageFactory;
 18  
 import org.mule.transformer.AbstractMessageTransformer;
 19  
 
 20  
 import com.thoughtworks.xstream.XStream;
 21  
 import com.thoughtworks.xstream.converters.Converter;
 22  
 
 23  
 import java.util.HashMap;
 24  
 import java.util.HashSet;
 25  
 import java.util.Map;
 26  
 import java.util.Set;
 27  
 
 28  
 import edu.emory.mathcs.backport.java.util.concurrent.atomic.AtomicReference;
 29  
 
 30  
 /**
 31  
  * <code>AbstractXStreamTransformer</code> is a base class for all XStream based
 32  
  * transformers. It takes care of creating and configuring the XStream parser.
 33  
  */
 34  
 
 35  0
 public abstract class AbstractXStreamTransformer extends AbstractMessageTransformer
 36  
 {
 37  0
     private final AtomicReference/* XStream */xstream = new AtomicReference();
 38  0
     private volatile String driverClass = XStreamFactory.XSTREAM_XPP_DRIVER;
 39  0
     private volatile Map<String, Class> aliases = new HashMap<String, Class>();
 40  0
     private volatile Set<Class <? extends Converter>> converters = new HashSet<Class <? extends Converter>>();
 41  
 
 42  
     @Override
 43  
     public void initialise() throws InitialisationException
 44  
     {
 45  0
         super.initialise();
 46  
         try
 47  
         {
 48  
             // Create XStream instance as part of initialization so that we can set
 49  
             // the context classloader that will be required to load classes.
 50  0
             XStream xStreamInstance = getXStream();
 51  0
             xStreamInstance.setClassLoader(Thread.currentThread().getContextClassLoader());
 52  
         }
 53  0
         catch (TransformerException e)
 54  
         {
 55  0
             throw new InitialisationException(e, this);
 56  0
         }
 57  0
     }
 58  
     
 59  
     public final XStream getXStream() throws TransformerException
 60  
     {
 61  0
         XStream instance = (XStream) xstream.get();
 62  
 
 63  0
         if (instance == null)
 64  
         {
 65  
             try
 66  
             {
 67  0
                 instance = new XStreamFactory(driverClass, aliases, converters).getInstance();
 68  0
                 if (!xstream.compareAndSet(null, instance))
 69  
                 {
 70  0
                     instance = (XStream)xstream.get();
 71  
                 }
 72  
             }
 73  0
             catch (Exception e)
 74  
             {
 75  0
                 throw new TransformerException(MessageFactory.createStaticMessage("Unable to initialize XStream"), e);
 76  0
             }
 77  
         }
 78  
 
 79  0
         return instance;
 80  
     }
 81  
 
 82  
     public Object clone() throws CloneNotSupportedException
 83  
     {
 84  0
         AbstractXStreamTransformer clone = (AbstractXStreamTransformer) super.clone();
 85  0
         clone.setDriverClass(driverClass);
 86  
 
 87  0
         if (aliases != null)
 88  
         {
 89  0
             clone.setAliases(new HashMap<String, Class>(aliases));
 90  
         }
 91  
         
 92  0
         if (converters != null)
 93  
         {
 94  0
             clone.setConverters(new HashSet<Class <? extends Converter>>(converters));
 95  
         }
 96  
 
 97  0
         return clone;
 98  
     }
 99  
 
 100  
     public String getDriverClass()
 101  
     {
 102  0
         return driverClass;
 103  
     }
 104  
 
 105  
     public void setDriverClass(String driverClass)
 106  
     {
 107  0
         this.driverClass = driverClass;
 108  
         // force XStream instance update
 109  0
         this.xstream.set(null);
 110  0
     }
 111  
 
 112  
     public Map<String, Class> getAliases()
 113  
     {
 114  0
         return aliases;
 115  
     }
 116  
 
 117  
     public void setAliases(Map<String, Class> aliases)
 118  
     {
 119  0
         this.aliases = aliases;
 120  
         // force XStream instance update
 121  0
         this.xstream.set(null);
 122  0
     }
 123  
 
 124  
     public Set<Class <? extends Converter>> getConverters()
 125  
     {
 126  0
         return converters;
 127  
     }
 128  
 
 129  
     public void setConverters(Set<Class <? extends Converter>> converters)
 130  
     {
 131  0
         this.converters = converters;
 132  
         // force XStream instance update
 133  0
         this.xstream.set(null);
 134  0
     }
 135  
 
 136  
     public void addAlias(String alias, Class aClass)
 137  
     {
 138  0
         aliases.put(alias, aClass);
 139  0
     }
 140  
 
 141  
     public Class removeAlias(String alias)
 142  
     {
 143  0
         return aliases.remove(alias);
 144  
     }
 145  
 
 146  
     public void addConverter(Class<? extends Converter> converterClass)
 147  
     {
 148  0
         converters.add(converterClass);
 149  0
     }
 150  
 
 151  
     public boolean removeAlias(Class<? extends Converter> converterClass)
 152  
     {
 153  0
         return converters.remove(converterClass);
 154  
     }
 155  
 }