/**
* Process list of event objects. Checks whether message source contact already exist for this
* event object, if yes just update it with the new values (not sure whether we should do this, as
* it may bring old messages) and if status of provider is changed, init its details, updates its
* capabilities. It still adds the found messages source contact to the list of the new contacts,
* as later we will detect this and fire update event. If nothing found a new contact is created.
*
* @param res list of event
* @param cachedRecentMessages list of newly created source contacts or already existed but
* updated with corresponding event object
* @param isStatusChanged whether provider status changed and we are processing
*/
private void processEventObjects(
Collection<EventObject> res,
List<ComparableEvtObj> cachedRecentMessages,
boolean isStatusChanged) {
for (EventObject obj : res) {
ComparableEvtObj oldMsg = findRecentMessage(obj, recentMessages);
if (oldMsg != null) {
oldMsg.update(obj); // update
if (isStatusChanged && recentQuery != null) recentQuery.updateCapabilities(oldMsg, obj);
// we still add it to cachedRecentMessages
// later we will find it is duplicate and will fire
// update event
if (!cachedRecentMessages.contains(oldMsg)) cachedRecentMessages.add(oldMsg);
continue;
}
oldMsg = findRecentMessage(obj, cachedRecentMessages);
if (oldMsg == null) {
oldMsg = new ComparableEvtObj(obj);
if (isStatusChanged && recentQuery != null) recentQuery.updateCapabilities(oldMsg, obj);
cachedRecentMessages.add(oldMsg);
}
}
}
/**
* Updates the contact sources in the recent query if any. Done here in order to sync with
* recentMessages instance, and to check for already existing instances of contact sources.
* Normally called from the query.
*/
public void updateRecentMessages() {
if (recentQuery == null) return;
synchronized (recentMessages) {
List<SourceContact> currentContactsInQuery = recentQuery.getQueryResults();
for (ComparableEvtObj evtObj : recentMessages) {
// the contains will use the correct equals method of
// the object evtObj
if (!currentContactsInQuery.contains(evtObj)) {
MessageSourceContact newSourceContact =
new MessageSourceContact(evtObj.getEventObject(), MessageSourceService.this);
newSourceContact.initDetails(evtObj.getEventObject());
recentQuery.addQueryResult(newSourceContact);
}
}
}
}
/**
* Add the ComparableEvtObj, newly added will fire new, for existing fire update and when trimming
* the list to desired length fire remove for those that were removed
*
* @param contactsToAdd
*/
private void addNewRecentMessages(List<ComparableEvtObj> contactsToAdd) {
// now find object to fire new, and object to fire remove
// let us find duplicates and fire update
List<ComparableEvtObj> duplicates = new ArrayList<ComparableEvtObj>();
for (ComparableEvtObj msgToAdd : contactsToAdd) {
if (recentMessages.contains(msgToAdd)) {
duplicates.add(msgToAdd);
// save update
updateRecentMessageToHistory(msgToAdd);
}
}
recentMessages.removeAll(duplicates);
// now contacts to add has no duplicates, add them all
boolean changed = recentMessages.addAll(contactsToAdd);
if (changed) {
Collections.sort(recentMessages);
if (recentQuery != null) {
for (ComparableEvtObj obj : duplicates)
recentQuery.updateContact(obj, obj.getEventObject());
}
}
if (!recentMessages.isEmpty())
oldestRecentMessage = recentMessages.get(recentMessages.size() - 1).getTimestamp();
// trim
List<ComparableEvtObj> removedItems = null;
if (recentMessages.size() > numberOfMessages) {
removedItems =
new ArrayList<ComparableEvtObj>(
recentMessages.subList(numberOfMessages, recentMessages.size()));
recentMessages.removeAll(removedItems);
}
if (recentQuery != null) {
// now fire, removed for all that were in the list
// and now are removed after trim
if (removedItems != null) {
for (ComparableEvtObj msc : removedItems) {
if (!contactsToAdd.contains(msc)) recentQuery.fireContactRemoved(msc);
}
}
// fire new for all that were added, and not removed after trim
for (ComparableEvtObj msc : contactsToAdd) {
if ((removedItems == null || !removedItems.contains(msc)) && !duplicates.contains(msc)) {
MessageSourceContact newSourceContact =
new MessageSourceContact(msc.getEventObject(), MessageSourceService.this);
newSourceContact.initDetails(msc.getEventObject());
recentQuery.addQueryResult(newSourceContact);
}
}
// if recent messages were changed, indexes have change lets
// fire event for the last element which will reorder the whole
// group if needed.
if (changed) recentQuery.fireContactChanged(recentMessages.get(recentMessages.size() - 1));
}
}