ActionInterceptorStack


1   // Copyright (c) 2003-2007, Jodd Team (jodd.sf.net). All Rights Reserved.
2   
3   package jodd.madvoc.interceptor;
4   
5   
6   import jodd.madvoc.ActionRequest;
7   import jodd.madvoc.MadvocException;
8   
9   /**
10   * Groups common interceptors, avoiding lots of classes inside
11   * an {@link jodd.madvoc.meta.InterceptedBy} annotation. It is only
12   * used for grouping, and will be not really added to the interceptors.
13   */
14  public abstract class ActionInterceptorStack implements ActionInterceptor {
15  
16      private Class  <? extends ActionInterceptor>[] interceptors;
17  
18      /**
19       * Constructs an interceptor stack with the given interceptors
20       */
21      public ActionInterceptorStack(Class  <? extends ActionInterceptor>... interceptorClasses) {
22          if (interceptorClasses.length == 0) {
23              throw new MadvocException("Empty action interceptor stack is not allowed.");
24          }
25          this.interceptors = interceptorClasses;
26      }
27  
28      /**
29       * Interceptor is not used since this is just an interceptor container.
30       */
31      public final String   intercept(ActionRequest actionRequest) throws Exception   {
32          return null;
33      }
34  
35      /**
36       * Returns an array of interceptors.
37       */
38      public Class  <? extends ActionInterceptor>[] getInterceptors() {
39          return interceptors;
40      }
41  }
42

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