/**
* Permanently removes locally stored message history for the metacontact, remove any recent
* contacts if any.
*/
public void eraseLocallyStoredHistory(MetaContact contact) throws IOException {
List<ComparableEvtObj> toRemove = null;
synchronized (recentMessages) {
toRemove = new ArrayList<ComparableEvtObj>();
Iterator<Contact> iter = contact.getContacts();
while (iter.hasNext()) {
Contact item = iter.next();
String id = item.getAddress();
ProtocolProviderService provider = item.getProtocolProvider();
for (ComparableEvtObj msc : recentMessages) {
if (msc.getProtocolProviderService().equals(provider)
&& msc.getContactAddress().equals(id)) {
toRemove.add(msc);
}
}
}
recentMessages.removeAll(toRemove);
}
if (recentQuery != null) {
for (ComparableEvtObj msc : toRemove) {
recentQuery.fireContactRemoved(msc);
}
}
}
/**
* When a provider is added. As searching can be slow especially when handling special type of
* messages (with subType) this need to be run in new Thread.
*
* @param provider ProtocolProviderService
*/
private void handleProviderAddedInSeparateThread(
ProtocolProviderService provider, boolean isStatusChanged) {
// lets check if we have cached recent messages for this provider, and
// fire events if found and are newer
synchronized (recentMessages) {
List<ComparableEvtObj> cachedRecentMessages =
getCachedRecentMessages(provider, isStatusChanged);
if (cachedRecentMessages.isEmpty()) {
// maybe there is no cached history for this
// let's check
// load it not from cache, but do a local search
Collection<EventObject> res =
messageHistoryService.findRecentMessagesPerContact(
numberOfMessages, provider.getAccountID().getAccountUniqueID(), null, isSMSEnabled);
List<ComparableEvtObj> newMsc = new ArrayList<ComparableEvtObj>();
processEventObjects(res, newMsc, isStatusChanged);
addNewRecentMessages(newMsc);
for (ComparableEvtObj msc : newMsc) {
saveRecentMessageToHistory(msc);
}
} else addNewRecentMessages(cachedRecentMessages);
}
}
/**
* 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);
}
}
}
/**
* Returns the index of the source contact, in the list of recent messages.
*
* @param messageSourceContact
* @return
*/
int getIndex(MessageSourceContact messageSourceContact) {
synchronized (recentMessages) {
for (int i = 0; i < recentMessages.size(); i++)
if (recentMessages.get(i).equals(messageSourceContact)) return i;
return -1;
}
}
/**
* Searches for contact ids in history of recent messages.
*
* @param provider
* @param after
* @return
*/
List<String> getRecentContactIDs(String provider, Date after) {
List<String> res = new ArrayList<String>();
try {
History history = getHistory();
if (history != null) {
Iterator<HistoryRecord> recs = history.getReader().findLast(NUMBER_OF_MSGS_IN_HISTORY);
SimpleDateFormat sdf = new SimpleDateFormat(HistoryService.DATE_FORMAT);
while (recs.hasNext()) {
HistoryRecord hr = recs.next();
String contact = null;
String recordProvider = null;
Date timestamp = null;
for (int i = 0; i < hr.getPropertyNames().length; i++) {
String propName = hr.getPropertyNames()[i];
if (propName.equals(STRUCTURE_NAMES[0])) recordProvider = hr.getPropertyValues()[i];
else if (propName.equals(STRUCTURE_NAMES[1])) contact = hr.getPropertyValues()[i];
else if (propName.equals(STRUCTURE_NAMES[2])) {
try {
timestamp = sdf.parse(hr.getPropertyValues()[i]);
} catch (ParseException e) {
timestamp = new Date(Long.parseLong(hr.getPropertyValues()[i]));
}
}
}
if (recordProvider == null || contact == null) continue;
if (after != null && timestamp != null && timestamp.before(after)) continue;
if (recordProvider.equals(provider)) res.add(contact);
}
}
} catch (IOException ex) {
logger.error("cannot create recent_messages history", ex);
}
return res;
}
/**
* 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);
}
}
}
}
/** Permanently removes all locally stored message history, remove recent contacts. */
public void eraseLocallyStoredHistory() throws IOException {
List<ComparableEvtObj> toRemove = null;
synchronized (recentMessages) {
toRemove = new ArrayList<ComparableEvtObj>(recentMessages);
recentMessages.clear();
}
if (recentQuery != null) {
for (ComparableEvtObj msc : toRemove) {
recentQuery.fireContactRemoved(msc);
}
}
}
/**
* Permanently removes locally stored message history for the chatroom, remove any recent contacts
* if any.
*/
public void eraseLocallyStoredHistory(ChatRoom room) {
ComparableEvtObj toRemove = null;
synchronized (recentMessages) {
for (ComparableEvtObj msg : recentMessages) {
if (msg.getRoom() != null && msg.getRoom().equals(room)) {
toRemove = msg;
break;
}
}
if (toRemove == null) return;
recentMessages.remove(toRemove);
}
if (recentQuery != null) recentQuery.fireContactRemoved(toRemove);
}
/**
* Searches for entries in cached recent messages in history.
*
* @param provider the provider which contact messages we will search
* @param isStatusChanged is the search because of status changed
* @return entries in cached recent messages in history.
*/
private List<ComparableEvtObj> getCachedRecentMessages(
ProtocolProviderService provider, boolean isStatusChanged) {
String providerID = provider.getAccountID().getAccountUniqueID();
List<String> recentMessagesContactIDs =
getRecentContactIDs(
providerID, recentMessages.size() < numberOfMessages ? null : oldestRecentMessage);
List<ComparableEvtObj> cachedRecentMessages = new ArrayList<ComparableEvtObj>();
for (String contactID : recentMessagesContactIDs) {
Collection<EventObject> res =
messageHistoryService.findRecentMessagesPerContact(
numberOfMessages, providerID, contactID, isSMSEnabled);
processEventObjects(res, cachedRecentMessages, isStatusChanged);
}
return cachedRecentMessages;
}
/**
* A provider has been removed.
*
* @param provider the ProtocolProviderService that has been unregistered.
*/
void handleProviderRemoved(ProtocolProviderService provider) {
// lets remove the recent messages for this provider, and update
// with recent messages for the available providers
synchronized (recentMessages) {
if (provider != null) {
List<ComparableEvtObj> removedItems = new ArrayList<ComparableEvtObj>();
for (ComparableEvtObj msc : recentMessages) {
if (msc.getProtocolProviderService().equals(provider)) removedItems.add(msc);
}
recentMessages.removeAll(removedItems);
if (!recentMessages.isEmpty())
oldestRecentMessage = recentMessages.get(recentMessages.size() - 1).getTimestamp();
else oldestRecentMessage = null;
if (recentQuery != null) {
for (ComparableEvtObj msc : removedItems) {
recentQuery.fireContactRemoved(msc);
}
}
}
// handleProviderRemoved can be invoked due to stopped
// history service, if this is the case we do not want to
// update messages
if (!this.messageHistoryService.isHistoryLoggingEnabled()) return;
// lets do the same as we enable provider
// for all registered providers and finally fire events
List<ComparableEvtObj> contactsToAdd = new ArrayList<ComparableEvtObj>();
for (ProtocolProviderService pps : messageHistoryService.getCurrentlyAvailableProviders()) {
contactsToAdd.addAll(getCachedRecentMessages(pps, true));
}
addNewRecentMessages(contactsToAdd);
}
}
/**
* Handles new events.
*
* @param obj the event object
* @param provider the provider
* @param id the id of the source of the event
*/
private void handle(EventObject obj, ProtocolProviderService provider, String id) {
// check if provider - contact exist update message content
synchronized (recentMessages) {
ComparableEvtObj existingMsc = null;
for (ComparableEvtObj msc : recentMessages) {
if (msc.getProtocolProviderService().equals(provider)
&& msc.getContactAddress().equals(id)) {
// update
msc.update(obj);
updateRecentMessageToHistory(msc);
existingMsc = msc;
}
}
if (existingMsc != null) {
Collections.sort(recentMessages);
oldestRecentMessage = recentMessages.get(recentMessages.size() - 1).getTimestamp();
if (recentQuery != null) {
recentQuery.updateContact(existingMsc, existingMsc.getEventObject());
recentQuery.fireContactChanged(existingMsc);
}
return;
}
// if missing create source contact
// and update recent messages, trim and sort
MessageSourceContact newSourceContact =
new MessageSourceContact(obj, MessageSourceService.this);
newSourceContact.initDetails(obj);
// we have already checked for duplicate
ComparableEvtObj newMsg = new ComparableEvtObj(obj);
recentMessages.add(newMsg);
Collections.sort(recentMessages);
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);
}
// save
saveRecentMessageToHistory(newMsg);
// no query nothing to fire
if (recentQuery == null) return;
// now fire
if (removedItems != null) {
for (ComparableEvtObj msc : removedItems) {
recentQuery.fireContactRemoved(msc);
}
}
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));
}
}