01: /*
02: * Copyright 2002-2006 the original author or authors.
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
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:
17: package org.springframework.web.portlet.handler;
18:
19: import javax.portlet.ActionRequest;
20: import javax.portlet.ActionResponse;
21: import javax.portlet.Portlet;
22: import javax.portlet.RenderRequest;
23: import javax.portlet.RenderResponse;
24:
25: import org.springframework.web.portlet.HandlerAdapter;
26: import org.springframework.web.portlet.ModelAndView;
27:
28: /**
29: * Adapter to use the Portlet interface with the generic DispatcherPortlet.
30: * Calls the Portlet's <code>render</code> and <code>processAction</code>
31: * methods to handle a request.
32: *
33: * <p>This adapter is not activated by default; it needs to be defined as a
34: * bean in the DispatcherPortlet context. It will automatically apply to
35: * mapped handler beans that implement the Portlet interface then.
36: *
37: * <p>Note that Portlet instances defined as bean will not receive initialization
38: * and destruction callbacks, unless a special post-processor such as
39: * SimplePortletPostProcessor is defined in the DispatcherPortlet context.
40: *
41: * <p><b>Alternatively, consider wrapping a Portlet with Spring's
42: * PortletWrappingController.</b> This is particularly appropriate for
43: * existing Portlet classes, allowing to specify Portlet initialization
44: * parameters, etc.
45: *
46: * @author John A. Lewis
47: * @since 2.0
48: * @see javax.portlet.Portlet
49: * @see SimplePortletPostProcessor
50: * @see org.springframework.web.portlet.mvc.PortletWrappingController
51: */
52: public class SimplePortletHandlerAdapter implements HandlerAdapter {
53:
54: public boolean supports(Object handler) {
55: return (handler instanceof Portlet);
56: }
57:
58: public void handleAction(ActionRequest request,
59: ActionResponse response, Object handler) throws Exception {
60:
61: ((Portlet) handler).processAction(request, response);
62: }
63:
64: public ModelAndView handleRender(RenderRequest request,
65: RenderResponse response, Object handler) throws Exception {
66:
67: ((Portlet) handler).render(request, response);
68: return null;
69: }
70:
71: }
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