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1   /*
2    * $Id: BlockAttribute.java 10256 2008-01-08 15:20:25Z 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.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.config.spring.util.SpringXMLUtils;
16  
17  import java.util.Arrays;
18  import java.util.HashSet;
19  import java.util.Set;
20  
21  import org.w3c.dom.Attr;
22  import org.w3c.dom.Element;
23  import org.w3c.dom.NamedNodeMap;
24  
25  /**
26   * Throws an exception if any of the disallowed attributes (after translation) is present.
27   * Designed to cooperates with
28   * {@link org.mule.config.spring.parsers.delegate.AbstractSerialDelegatingDefinitionParser#addHandledException(Class)}
29   */
30  public class BlockAttribute implements PreProcessor
31  {
32  
33      private Set disallowed;
34  
35      public BlockAttribute(String disallowed)
36      {
37          this(new String[]{disallowed});
38      }
39  
40      public BlockAttribute(String[] disallowed)
41      {
42          this.disallowed = new HashSet(Arrays.asList(disallowed));
43      }
44  
45      public void preProcess(PropertyConfiguration config, Element element)
46      {
47          NamedNodeMap attributes = element.getAttributes();
48          for (int i = 0; i < attributes.getLength(); i++)
49          {
50              String alias = SpringXMLUtils.attributeName((Attr) attributes.item(i));
51              String name = config.translateName(alias);
52              if (disallowed.contains(name))
53              {
54                  throw new BlockAttributeException("Attribute " + alias + " is not allowed here.");
55              }
56          }
57      }
58  
59      public static class BlockAttributeException extends IllegalStateException
60      {
61  
62          private BlockAttributeException(String message)
63          {
64              super(message);
65          }
66  
67      }
68  
69  }