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1   /*
2    * $Id: BlockAttribute.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.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      private Set<String> disallowed;
33  
34      public BlockAttribute(String disallowed)
35      {
36          this(new String[]{ disallowed });
37      }
38  
39      public BlockAttribute(String[] disallowed)
40      {
41          this.disallowed = new HashSet<String>(Arrays.asList(disallowed));
42      }
43  
44      public void preProcess(PropertyConfiguration config, Element element)
45      {
46          NamedNodeMap attributes = element.getAttributes();
47          for (int i = 0; i < attributes.getLength(); i++)
48          {
49              String alias = SpringXMLUtils.attributeName((Attr) attributes.item(i));
50              String name = config.translateName(alias);
51              if (disallowed.contains(name))
52              {
53                  throw new BlockAttributeException("Attribute " + alias + " is not allowed here.");
54              }
55          }
56      }
57  
58      public static class BlockAttributeException extends IllegalStateException
59      {
60          BlockAttributeException(String message)
61          {
62              super(message);
63          }
64      }
65  }