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 20297 2010-11-22 18:49:18Z aperepel $
 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.lifecycle.InitialisationException;
 14  
 import org.mule.api.transformer.TransformerException;
 15  
 import org.mule.config.i18n.MessageFactory;
 16  
 import org.mule.transformer.AbstractMessageTransformer;
 17  
 
 18  
 import com.thoughtworks.xstream.XStream;
 19  
 import com.thoughtworks.xstream.converters.Converter;
 20  
 
 21  
 import java.util.HashMap;
 22  
 import java.util.HashSet;
 23  
 import java.util.Map;
 24  
 import java.util.Set;
 25  
 
 26  
 import edu.emory.mathcs.backport.java.util.concurrent.atomic.AtomicReference;
 27  
 
 28  
 /**
 29  
  * <code>AbstractXStreamTransformer</code> is a base class for all XStream based
 30  
  * transformers. It takes care of creating and configuring the XStream parser.
 31  
  */
 32  
 
 33  0
 public abstract class AbstractXStreamTransformer extends AbstractMessageTransformer
 34  
 {
 35  0
     private final AtomicReference/* XStream */xstream = new AtomicReference();
 36  0
     private volatile String driverClass = XStreamFactory.XSTREAM_XPP_DRIVER;
 37  0
     private volatile Map<String, Class> aliases = new HashMap<String, Class>();
 38  0
     private volatile Set<Class <? extends Converter>> converters = new HashSet<Class <? extends Converter>>();
 39  
 
 40  
     @Override
 41  
     public void initialise() throws InitialisationException
 42  
     {
 43  0
         super.initialise();
 44  
         try
 45  
         {
 46  
             // Create XStream instance as part of initialization so that we can set
 47  
             // the context classloader that will be required to load classes.
 48  0
             XStream xStreamInstance = getXStream();
 49  0
             xStreamInstance.setClassLoader(Thread.currentThread().getContextClassLoader());
 50  
         }
 51  0
         catch (TransformerException e)
 52  
         {
 53  0
             throw new InitialisationException(e, this);
 54  0
         }
 55  0
     }
 56  
     
 57  
     public final XStream getXStream() throws TransformerException
 58  
     {
 59  0
         XStream instance = (XStream) xstream.get();
 60  
 
 61  0
         if (instance == null)
 62  
         {
 63  
             try
 64  
             {
 65  0
                 instance = new XStreamFactory(driverClass, aliases, converters).getInstance();
 66  0
                 if (!xstream.compareAndSet(null, instance))
 67  
                 {
 68  0
                     instance = (XStream)xstream.get();
 69  
                 }
 70  
             }
 71  0
             catch (Exception e)
 72  
             {
 73  0
                 throw new TransformerException(MessageFactory.createStaticMessage("Unable to initialize XStream"), e);
 74  0
             }
 75  
         }
 76  
 
 77  0
         return instance;
 78  
     }
 79  
 
 80  
     public Object clone() throws CloneNotSupportedException
 81  
     {
 82  0
         AbstractXStreamTransformer clone = (AbstractXStreamTransformer) super.clone();
 83  0
         clone.setDriverClass(driverClass);
 84  
 
 85  0
         if (aliases != null)
 86  
         {
 87  0
             clone.setAliases(new HashMap<String, Class>(aliases));
 88  
         }
 89  
         
 90  0
         if (converters != null)
 91  
         {
 92  0
             clone.setConverters(new HashSet<Class <? extends Converter>>(converters));
 93  
         }
 94  
 
 95  0
         return clone;
 96  
     }
 97  
 
 98  
     public String getDriverClass()
 99  
     {
 100  0
         return driverClass;
 101  
     }
 102  
 
 103  
     public void setDriverClass(String driverClass)
 104  
     {
 105  0
         this.driverClass = driverClass;
 106  
         // force XStream instance update
 107  0
         this.xstream.set(null);
 108  0
     }
 109  
 
 110  
     public Map<String, Class> getAliases()
 111  
     {
 112  0
         return aliases;
 113  
     }
 114  
 
 115  
     public void setAliases(Map<String, Class> aliases)
 116  
     {
 117  0
         this.aliases = aliases;
 118  
         // force XStream instance update
 119  0
         this.xstream.set(null);
 120  0
     }
 121  
 
 122  
     public Set<Class <? extends Converter>> getConverters()
 123  
     {
 124  0
         return converters;
 125  
     }
 126  
 
 127  
     public void setConverters(Set<Class <? extends Converter>> converters)
 128  
     {
 129  0
         this.converters = converters;
 130  
         // force XStream instance update
 131  0
         this.xstream.set(null);
 132  0
     }
 133  
 
 134  
     public void addAlias(String alias, Class aClass)
 135  
     {
 136  0
         aliases.put(alias, aClass);
 137  0
     }
 138  
 
 139  
     public Class removeAlias(String alias)
 140  
     {
 141  0
         return aliases.remove(alias);
 142  
     }
 143  
 
 144  
     public void addConverter(Class<? extends Converter> converterClass)
 145  
     {
 146  0
         converters.add(converterClass);
 147  0
     }
 148  
 
 149  
     public boolean removeAlias(Class<? extends Converter> converterClass)
 150  
     {
 151  0
         return converters.remove(converterClass);
 152  
     }
 153  
 }