MinimalistExceptionConverter


1   /*
2    * Copyright 2005 Joe Walker
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *     http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.directwebremoting.convert;
17  
18  import java.util.HashMap  ;
19  import java.util.Map  ;
20  
21  import org.directwebremoting.extend.MarshallException;
22  
23  /**
24   * A special case of BeanConverter for use by default with {@link Throwable}s,
25   * which only outputs a "broken" message.
26   * <p>In other words, by default the user doesn't get to learn anything about
27   * failures on the server.
28   * @author Joe Walker [joe at getahead dot ltd dot uk]
29   */
30  public class MinimalistExceptionConverter extends BeanConverter
31  {
32      /* (non-Javadoc)
33       * @see org.directwebremoting.convert.BasicBeanConverter#getPropertyDescriptors(java.lang.Class, boolean, boolean)
34       */
35      public Map   getPropertyMapFromClass(Class   type, boolean readRequired, boolean writeRequired) throws MarshallException
36      {
37          Map   descriptors = new HashMap  ();
38  
39          descriptors.put("message", new PlainProperty("message", "Error"));
40          descriptors.put("javaClassName", new PlainProperty("javaClassName", "java.lang.Throwable"));
41  
42          return descriptors;
43      }
44  }
45

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