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  
  * $Id: ExpressionFilenameParser.java 20321 2010-11-24 15:21:24Z dfeist $
 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.transport.file;
 12  
 
 13  
 import org.mule.api.MuleContext;
 14  
 import org.mule.api.MuleMessage;
 15  
 import org.mule.api.context.MuleContextAware;
 16  
 import org.mule.api.expression.ExpressionManager;
 17  
 import org.mule.util.TemplateParser;
 18  
 
 19  
 import java.text.MessageFormat;
 20  
 
 21  
 /**
 22  
  * <code>ExpressionFilenameParser</code> can use any expression language supported by Mule
 23  
  * to construct a file name for the current message.  Expressions can be xpath, xquery, ognl, mvel, 
 24  
  * header, function and more. For more information see http://muledocs.org/v2/Expressions.
 25  
  * <p/>
 26  
  * For example an xpath expression can be defined to pull a message id out of an xml message and 
 27  
  * use that as the file name -
 28  
  * <code>
 29  
  * #[xpath:/message/header/@id]
 30  
  * </code>
 31  
  * <p/>
 32  
  * This parser superseeds the (now removed) <code>org.mule.transport.file.SimpleFilenameParser</code>
 33  
  * which has been kept in Mule 2 for compatibility. The following demonstrates how to achieve the 
 34  
  * same results when using the <code>ExpressionFilenameParser</code> over the 
 35  
  * <code>SimpleFilenameParser</code>
 36  
  * <ul>
 37  
  * <li>#[DATE] : #[function:datestamp]</li>
 38  
  * <li>#[DATE:yy-MM-dd] : #[function:datestamp-yy-MM-dd]</li>
 39  
  * <li>#[SYSTIME] : #[function:systime]</li>
 40  
  * <li>#[UUID] : #[function:uuid]</li>
 41  
  * <li>#[ORIGINALNAME] : #[header:originalFilename]</li>
 42  
  * <li>#[COUNT] : #[function:count] - note that this is a global counter.</li>
 43  
  * <li>#[&lt;Message Property Name&gt;] : #[header:&lt;Message Property Name&gt;]</li>
 44  
  * </ul>
 45  
  */
 46  0
 public class ExpressionFilenameParser implements FilenameParser, MuleContextAware
 47  
 {
 48  
     public static final String DEFAULT_DATE_FORMAT = "dd-MM-yy_HH-mm-ss.SSS";
 49  0
     public static final String DEFAULT_EXPRESSION = MessageFormat.format("{0}function:uuid{1}.dat",
 50  
                                                                          ExpressionManager.DEFAULT_EXPRESSION_PREFIX,
 51  
                                                                          ExpressionManager.DEFAULT_EXPRESSION_POSTFIX);
 52  
 
 53  0
     private final TemplateParser wigglyMuleParser = TemplateParser.createMuleStyleParser();
 54  0
     private final TemplateParser squareParser = TemplateParser.createSquareBracesStyleParser();
 55  
 
 56  
     protected MuleContext muleContext;
 57  
 
 58  
     public void setMuleContext(MuleContext context)
 59  
     {
 60  0
         this.muleContext = context;
 61  0
     }
 62  
 
 63  
     public String getFilename(MuleMessage message, String expression)
 64  
     {
 65  0
         if (expression == null)
 66  
         {
 67  0
             expression = DEFAULT_EXPRESSION;
 68  
         }
 69  
 
 70  0
         if (expression.indexOf(ExpressionManager.DEFAULT_EXPRESSION_PREFIX) > -1)
 71  
         {
 72  0
             return getFilename(message, expression, wigglyMuleParser);
 73  
         }
 74  
         else
 75  
         {
 76  0
             return getFilename(message, expression, squareParser);
 77  
         }
 78  
     }
 79  
 
 80  
     protected String getFilename(final MuleMessage message, String expression, TemplateParser parser)
 81  
     {
 82  0
         return parser.parse(new TemplateParser.TemplateCallback()
 83  0
         {
 84  
             public Object match(String token)
 85  
             {
 86  0
                 return muleContext.getExpressionManager().evaluate(token, message);
 87  
             }
 88  
         }, expression);
 89  
     }
 90  
 }