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1   /*
2    * $Id: AttributeConcatenation.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.config.spring.parsers.processors;
12  
13  import org.mule.config.spring.parsers.PreProcessor;
14  import org.mule.config.spring.parsers.assembly.configuration.PropertyConfiguration;
15  import org.mule.util.StringUtils;
16  
17  import org.w3c.dom.Element;
18  
19  public class AttributeConcatenation implements PreProcessor
20  {
21  
22      private String target;
23      private String separator;
24      private String[] sources;
25  
26      public AttributeConcatenation(String target, String separator, String[] sources)
27      {
28          this.target = target;
29          this.separator = separator;
30          this.sources = sources;
31      }
32  
33      public void preProcess(PropertyConfiguration config, Element element)
34      {
35          StringBuffer concat = new StringBuffer();
36          boolean first = true;
37          for (int i = 0; i < sources.length; ++i)
38          {
39              String value = config.translateValue(sources[i], element.getAttribute(sources[i])).toString();
40              if (StringUtils.isNotEmpty(value))
41              {
42                  if (first)
43                  {
44                      first = false;
45                  }
46                  else
47                  {
48                      concat.append(separator);
49                  }
50                  concat.append(value);
51              }
52          }
53          element.setAttribute(target, concat.toString());
54      }
55  
56  }