Coverage Report - org.mule.transport.file.ExpressionFilenameParser
 
Classes in this File Line Coverage Branch Coverage Complexity
ExpressionFilenameParser
0%
0/12
0%
0/4
1.75
ExpressionFilenameParser$1
0%
0/2
N/A
1.75
 
 1  
 /*
 2  
  * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
 3  
  * The software in this package is published under the terms of the CPAL v1.0
 4  
  * license, a copy of which has been included with this distribution in the
 5  
  * LICENSE.txt file.
 6  
  */
 7  
 package org.mule.transport.file;
 8  
 
 9  
 import org.mule.api.MuleContext;
 10  
 import org.mule.api.MuleMessage;
 11  
 import org.mule.api.context.MuleContextAware;
 12  
 import org.mule.api.expression.ExpressionManager;
 13  
 import org.mule.util.TemplateParser;
 14  
 
 15  
 import java.text.MessageFormat;
 16  
 
 17  
 /**
 18  
  * <code>ExpressionFilenameParser</code> can use any expression language supported by Mule
 19  
  * to construct a file name for the current message.  Expressions can be xpath, xquery, ognl, mvel,
 20  
  * header, function and more. For more information see http://www.mulesoft.org/documentation/display/MULE3USER/Using+Expressions.
 21  
  * <p/>
 22  
  * For example an xpath expression can be defined to pull a message id out of an xml message and 
 23  
  * use that as the file name -
 24  
  * <code>
 25  
  * #[xpath:/message/header/@id]
 26  
  * </code>
 27  
  * <p/>
 28  
  * This parser superseeds the (now removed) <code>org.mule.transport.file.SimpleFilenameParser</code>
 29  
  * which has been kept in Mule 2 for compatibility. The following demonstrates how to achieve the 
 30  
  * same results when using the <code>ExpressionFilenameParser</code> over the 
 31  
  * <code>SimpleFilenameParser</code>
 32  
  * <ul>
 33  
  * <li>#[DATE] : #[function:datestamp]</li>
 34  
  * <li>#[DATE:yy-MM-dd] : #[function:datestamp-yy-MM-dd]</li>
 35  
  * <li>#[SYSTIME] : #[function:systime]</li>
 36  
  * <li>#[UUID] : #[function:uuid]</li>
 37  
  * <li>#[ORIGINALNAME] : #[header:originalFilename]</li>
 38  
  * <li>#[COUNT] : #[function:count] - note that this is a global counter.</li>
 39  
  * <li>#[&lt;Message Property Name&gt;] : #[header:&lt;Message Property Name&gt;]</li>
 40  
  * </ul>
 41  
  */
 42  0
 public class ExpressionFilenameParser implements FilenameParser, MuleContextAware
 43  
 {
 44  
     public static final String DEFAULT_DATE_FORMAT = "dd-MM-yy_HH-mm-ss.SSS";
 45  0
     public static final String DEFAULT_EXPRESSION = MessageFormat.format("{0}function:uuid{1}.dat",
 46  
                                                                          ExpressionManager.DEFAULT_EXPRESSION_PREFIX,
 47  
                                                                          ExpressionManager.DEFAULT_EXPRESSION_POSTFIX);
 48  
 
 49  0
     private final TemplateParser wigglyMuleParser = TemplateParser.createMuleStyleParser();
 50  0
     private final TemplateParser squareParser = TemplateParser.createSquareBracesStyleParser();
 51  
 
 52  
     protected MuleContext muleContext;
 53  
 
 54  
     public void setMuleContext(MuleContext context)
 55  
     {
 56  0
         this.muleContext = context;
 57  0
     }
 58  
 
 59  
     public String getFilename(MuleMessage message, String expression)
 60  
     {
 61  0
         if (expression == null)
 62  
         {
 63  0
             expression = DEFAULT_EXPRESSION;
 64  
         }
 65  
 
 66  0
         if (expression.indexOf(ExpressionManager.DEFAULT_EXPRESSION_PREFIX) > -1)
 67  
         {
 68  0
             return getFilename(message, expression, wigglyMuleParser);
 69  
         }
 70  
         else
 71  
         {
 72  0
             return getFilename(message, expression, squareParser);
 73  
         }
 74  
     }
 75  
 
 76  
     protected String getFilename(final MuleMessage message, String expression, TemplateParser parser)
 77  
     {
 78  0
         return parser.parse(new TemplateParser.TemplateCallback()
 79  0
         {
 80  
             public Object match(String token)
 81  
             {
 82  0
                 return muleContext.getExpressionManager().evaluate(token, message);
 83  
             }
 84  
         }, expression);
 85  
     }
 86  
 }