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1   /*
2    * $Id: ObjectArrayToString.java 10489 2008-01-23 17:53:38Z dfeist $
3    * --------------------------------------------------------------------------------------
4    * Copyright (c) MuleSource, Inc.  All rights reserved.  http://www.mulesource.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.transformer.simple;
12  
13  import org.mule.api.transformer.DiscoverableTransformer;
14  import org.mule.api.transformer.TransformerException;
15  import org.mule.transformer.AbstractTransformer;
16  import org.mule.util.StringUtils;
17  
18  /**
19   * <code>ObjectArrayToString</code> transformer is the opposite of
20   * StringToObjectArray - it simply converts Object[] to a String in which each
21   * element is separated by a configurable delimiter (default is a space).
22   */
23  
24  public class ObjectArrayToString extends AbstractTransformer implements DiscoverableTransformer
25  {
26      /** Give core transformers a slighty higher priority */
27      private int priorityWeighting = DiscoverableTransformer.DEFAULT_PRIORITY_WEIGHTING + 1;
28  
29      private static final String DEFAULT_DELIMITER = " ";
30  
31      private String delimiter = null;
32  
33      public ObjectArrayToString()
34      {
35          registerSourceType(Object[].class);
36          setReturnClass(String.class);
37      }
38  
39      public Object doTransform(Object src, String encoding) throws TransformerException
40      {
41          if (src == null)
42          {
43              return src;
44          }
45  
46          Object[] in = (Object[]) src;
47          String out = StringUtils.join(in, getDelimiter());
48  
49          /*
50          for (int i = 0; i < in.length; i++)
51          {
52              if (in[i] != null)
53              {
54                  if (i > 0) out += getDelimiter();
55                  out += in[i].toString();
56              }
57          }
58          */
59  
60          return out;
61      }
62  
63      /** @return the delimiter */
64      public String getDelimiter()
65      {
66          if (delimiter == null)
67          {
68              return DEFAULT_DELIMITER;
69          }
70          else
71          {
72              return delimiter;
73          }
74      }
75  
76      /** @param sets the delimiter */
77      public void setDelimiter(String delimiter)
78      {
79          this.delimiter = delimiter;
80      }
81  
82      public int getPriorityWeighting()
83      {
84          return priorityWeighting;
85      }
86  
87      public void setPriorityWeighting(int priorityWeighting)
88      {
89          this.priorityWeighting = priorityWeighting;
90      }
91  }