How to use

receive

method

in

org.apache.portals.messaging.PortletMessaging

protected Object receiveRenderMessage(PortletRequest request, String message)
{
  try
  {
    if (topic == null)
      return PortletMessaging.receive(request, message);
    else
      return PortletMessaging.receive(request, topic, message);
  }
  catch (Exception e)
  {}
  return null;
}

public String getURLSource(RenderRequest request, RenderResponse response, PortletPreferences prefs)
{
  String [] srcReplaceValues = { request.getServerName(), Integer.toString(request.getServerPort()), request.getContextPath() };
  
  String source = (String) PortletMessaging.receive(request, IFRAME_SRC_URL);
  
  if (source == null)
  {
    source = StringUtils.replaceEach(getAttributePreference(prefs, "SRC"), SRC_REPLACE_KEYS, srcReplaceValues);
  }
  
  // Sometimes, iframe's SRC attribute can be set to a local url to allow cross-domain scripting.
  // If proxy remote URL and its corresponding local path are set, then the proxy remote URL prefix
  // should be replaced by the local path.
  
  String proxyRemoteURL = StringUtils.replaceEach(getAttributePreference(prefs, "PROXYREMOTEURL"), SRC_REPLACE_KEYS, srcReplaceValues);
  String proxyLocalPath = StringUtils.replaceEach(getAttributePreference(prefs, "PROXYLOCALPATH"), SRC_REPLACE_KEYS, srcReplaceValues);
  
  if (StringUtils.isNotEmpty(proxyRemoteURL) && StringUtils.isNotEmpty(proxyLocalPath) && StringUtils.startsWith(source, proxyRemoteURL))
  {
    source = proxyLocalPath + source.substring(proxyRemoteURL.length());
  }
  
  return source;
}

public String getURLSource(RenderRequest request, RenderResponse response, PortletPreferences prefs)
{
  String [] srcReplaceValues = { request.getServerName(), Integer.toString(request.getServerPort()), request.getContextPath() };
  
  String source = (String) PortletMessaging.receive(request, IFRAME_SRC_URL);
  
  if (source == null)
  {
    source = StringUtils.replaceEach(getAttributePreference(prefs, "SRC"), SRC_REPLACE_KEYS, srcReplaceValues);
  }
  
  // Sometimes, iframe's SRC attribute can be set to a local url to allow cross-domain scripting.
  // If proxy remote URL and its corresponding local path are set, then the proxy remote URL prefix
  // should be replaced by the local path.
  
  String proxyRemoteURL = StringUtils.replaceEach(getAttributePreference(prefs, "PROXYREMOTEURL"), SRC_REPLACE_KEYS, srcReplaceValues);
  String proxyLocalPath = StringUtils.replaceEach(getAttributePreference(prefs, "PROXYLOCALPATH"), SRC_REPLACE_KEYS, srcReplaceValues);
  
  if (StringUtils.isNotEmpty(proxyRemoteURL) && StringUtils.isNotEmpty(proxyLocalPath) && StringUtils.startsWith(source, proxyRemoteURL))
  {
    source = proxyLocalPath + source.substring(proxyRemoteURL.length());
  }
  
  return source;
}

Cookie[] cookies = (Cookie[])PortletMessaging.receive(request, HTTP_STATE);
if (cookies != null)

List<Cookie> cookies = (List<Cookie>) PortletMessaging.receive(request, HTTP_STATE);

  WebContentHistoryList history = (WebContentHistoryList)PortletMessaging.receive(actionRequest, HISTORY);
WebContentHistoryList history = (WebContentHistoryList)PortletMessaging.receive(actionRequest, HISTORY);
if (history == null)
  history = new WebContentHistoryList();

  WebContentPageHistory history = (WebContentPageHistory)PortletMessaging.receive(actionRequest, HISTORY);
WebContentPageHistory history = (WebContentPageHistory)PortletMessaging.receive(actionRequest, HISTORY);

WebContentPageHistory history = (WebContentPageHistory)PortletMessaging.receive(request, HISTORY);

WebContentHistoryList history = (WebContentHistoryList)PortletMessaging.receive(request, HISTORY);
if (history == null)
  history = new WebContentHistoryList();