ServletRequestListener


1   /*
2   * Licensed to the Apache Software Foundation (ASF) under one or more
3   * contributor license agreements.  See the NOTICE file distributed with
4   * this work for additional information regarding copyright ownership.
5   * The ASF licenses this file to You under the Apache License, Version 2.0
6   * (the "License"); you may not use this file except in compliance with
7   * the License.  You may obtain a copy of the License at
8   *
9   *     http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17  package javax.servlet;
18  
19  import java.util.EventListener  ;
20  
21      /**
22       * A ServletRequestListener can be implemented by the developer
23       * interested in being notified of requests coming in and out of
24       * scope in a web component. A request is defined as coming into
25       * scope when it is about to enter the first servlet or filter
26       * in each web application, as going out of scope when it exits
27       * the last servlet or the first filter in the chain.
28       *
29       * @since Servlet 2.4
30       */
31  
32  
33  public interface ServletRequestListener extends EventListener   {
34  
35      /** The request is about to go out of scope of the web application. */
36      public void requestDestroyed ( ServletRequestEvent   sre );
37  
38      /** The request is about to come into scope of the web application. */
39      public void requestInitialized ( ServletRequestEvent   sre );
40  }
41
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