public void removeBridgeRequestScopesByPortlet(PortletConfig portletConfig) {
String portletNameToRemove = portletConfig.getPortletName();
PortletContext portletContext = portletConfig.getPortletContext();
BridgeRequestScopeCache bridgeRequestScopeCache =
BridgeRequestScopeCacheFactory.getBridgeRequestScopeCacheInstance(portletContext);
Set<Map.Entry<String, BridgeRequestScope>> mapEntries = bridgeRequestScopeCache.entrySet();
if (mapEntries != null) {
List<String> keysToRemove = new ArrayList<String>();
for (Map.Entry<String, BridgeRequestScope> mapEntry : mapEntries) {
BridgeRequestScope bridgeRequestScope = mapEntry.getValue();
String bridgeRequestScopeId = bridgeRequestScope.getId();
String portletName = bridgeRequestScopeId.split("[:][:][:]")[0];
if (portletNameToRemove.equals(portletName)) {
keysToRemove.add(mapEntry.getKey());
}
}
for (String key : keysToRemove) {
bridgeRequestScopeCache.remove(key);
}
}
}
/**
* This method is designed to be invoked from a {@link javax.servlet.http.HttpSessionListener}
* like {@link BridgeSessionListener} when a session timeout/expiration occurs. The logic in this
* method is a little awkward because we have to try and remove BridgeRequestScope instances from
* {@link Map} instances in the {@link ServletContext} rather than the {@link PortletContext}
* because we only have access to the Servlet-API when sessions expire.
*/
public void removeBridgeRequestScopesBySession(HttpSession httpSession) {
// For each ServletContext attribute name:
String httpSessionId = httpSession.getId();
ServletContext servletContext = httpSession.getServletContext();
Enumeration<String> attributeNames = servletContext.getAttributeNames();
if (attributeNames != null) {
while (attributeNames.hasMoreElements()) {
String attributeName = attributeNames.nextElement();
// Get the value associated with the current attribute name.
Object attributeValue = servletContext.getAttribute(attributeName);
// If the value is a type of java.util.Map then it is possible that it contains
// BridgeRequestScope
// instances.
if ((attributeValue != null) && (attributeValue instanceof Map)) {
// Prepare to iterate over the map entries.
Map<?, ?> map = (Map<?, ?>) attributeValue;
Set<?> entrySet = null;
try {
entrySet = map.entrySet();
} catch (Exception e) {
// ignore -- some maps like Mojarra's Flash scope will throw a NullPointerException
}
if (entrySet != null) {
// Iterate over the map entries, and build up a list of BridgeRequestScope keys that are
// to be
// removed. Doing it this way prevents ConcurrentModificationExceptions from being
// thrown.
List<Object> keysToRemove = new ArrayList<Object>();
for (Object mapEntryAsObject : entrySet) {
Map.Entry<?, ?> mapEntry = (Map.Entry<?, ?>) mapEntryAsObject;
Object key = mapEntry.getKey();
Object value = mapEntry.getValue();
if ((value != null) && (value instanceof BridgeRequestScope)) {
BridgeRequestScope bridgeRequestScope = (BridgeRequestScope) value;
String bridgeRequestScopeSessionId =
bridgeRequestScope.getId().split("[:][:][:]")[1];
if (httpSessionId.equals(bridgeRequestScopeSessionId)) {
keysToRemove.add(key);
}
}
}
// For each BridgeRequestScope key that is to be removed:
for (Object bridgeRequestScopeId : keysToRemove) {
// Remove it from the map.
Object bridgeRequestScope = map.remove(bridgeRequestScopeId);
logger.debug(
"Removed bridgeRequestScopeId=[{0}] bridgeRequestScope=[{1}] from cache due to session timeout",
bridgeRequestScopeId, bridgeRequestScope);
}
}
}
}
}
}
