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1   package org.apache.turbine.modules.screens;
2   
3   /*
4    * Copyright 2001-2005 The Apache Software Foundation.
5    *
6    * Licensed under the Apache License, Version 2.0 (the "License")
7    * you may not use this file except in compliance with the License.
8    * You may obtain a copy of the License at
9    *
10   *     http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing, software
13   * distributed under the License is distributed on an "AS IS" BASIS,
14   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15   * See the License for the specific language governing permissions and
16   * limitations under the License.
17   */
18  
19  import org.apache.turbine.Turbine;
20  import org.apache.turbine.TurbineConstants;
21  
22  import org.apache.turbine.util.RunData;
23  
24  import org.apache.velocity.context.Context;
25  
26  /***
27   * VelocityErrorScreen screen - directs errors at the velocity
28   * error template defined in template.error.
29   *
30   * @author <a href="mailto:gonzalo.diethelm@sonda.com">Gonzalo Diethelm</a>
31   * @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a>
32   * @version $Id: VelocityErrorScreen.java 264148 2005-08-29 14:21:04Z henning $
33   */
34  public class VelocityErrorScreen
35      extends VelocityScreen
36  {
37      /***
38       * Implement this to add information to the context.
39       *
40       * @param data Turbine information.
41       * @param context Context for web pages.
42       * @exception Exception a generic exception.
43       */
44      protected void doBuildTemplate(RunData data, Context context)
45              throws Exception
46      {
47          context.put (TurbineConstants.PROCESSING_EXCEPTION_PLACEHOLDER,
48                       data.getStackTraceException().toString());
49          context.put (TurbineConstants.STACK_TRACE_PLACEHOLDER,
50                       data.getStackTrace());
51  
52          String errorTemplate = Turbine.getConfiguration()
53              .getString(TurbineConstants.TEMPLATE_ERROR_KEY,
54                         TurbineConstants.TEMPLATE_ERROR_VM);
55  
56          setTemplate(data, errorTemplate);
57      }
58  }