|
1
4 package com.opensymphony.webwork.portlet.util;
5
6 import javax.portlet.PortletRequest;
7 import javax.portlet.PortletSession;
8 import java.io.NotSerializableException  ;
9 import java.io.Serializable ;
10
11
12
16 public class PortletMessaging {
17
18 public static final void publish(PortletRequest request, String messageName, Object message)
19 throws NotSerializableException {
20 String key = messageName;
21 if (message instanceof Serializable ) {
22 request.getPortletSession().setAttribute(key, message, PortletSession.PORTLET_SCOPE);
23 } else {
24 throw new NotSerializableException ("Message not serializable for " + key);
25 }
26 }
27
28 public static final Object consume(PortletRequest request, String messageName) {
29 String key = messageName;
30 Object object = request.getPortletSession().getAttribute(key, PortletSession.PORTLET_SCOPE);
31 request.getPortletSession().removeAttribute(key, PortletSession.PORTLET_SCOPE);
33 return object;
34 }
35
36 public static final Object receive(PortletRequest request, String messageName) {
37 String key = messageName;
38 Object object = request.getPortletSession().getAttribute(key, PortletSession.PORTLET_SCOPE);
39 return object;
40 }
41
42 public static final void cancel(PortletRequest request, String messageName) {
43 String key = messageName;
44 request.getPortletSession().removeAttribute(key, PortletSession.PORTLET_SCOPE);
45 }
46
47 }
48 |
Popular Tags |
Java API By Example, From Geeks To Geeks.