01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * 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: * $Header:$
18: */
19: package org.apache.beehive.netui.pageflow.handler;
20:
21: import javax.servlet.ServletContext;
22:
23: /**
24: * Base handler interface.
25: */
26: public interface Handler {
27: /**
28: * Initialize.
29: *
30: * @param handlerConfig the configuration object for this Handler.
31: * @param previousHandler the previously-registered Handler, which this one can adapt.
32: * @param servletContext the ServletContext for the webapp that is creating this object.
33: */
34: public void init(HandlerConfig handlerConfig,
35: Handler previousHandler, ServletContext servletContext);
36:
37: /**
38: * Reinitialize, normally used to reconsitute transient data that was lost during serialization.
39: *
40: * @param servletContext the ServletContext for the webapp that is reinitializing this object.
41: */
42: public void reinit(ServletContext servletContext);
43: }
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