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Introduced unchangedEntries in Roster logic 

If the connection has been reconnected, then we will receive entries
that have been unchanged since the last time we received a roster
result. Without this change, those entries ended up in 'toDelete' and
got deleted.

This change also inlines some roster methods.
This commit is contained in:
Florian Schmaus 2014-05-17 10:43:30 +02:00
parent 9a61c75ab0
commit f1f7713513
1 changed files with 64 additions and 72 deletions
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136
smack-core/src/main/java/org/jivesoftware/smack/Roster.java
View File

@ -686,9 +686,8 @@ public class Roster {
}
}
private void addUpdateEntry(Collection<String> addedEntries,
Collection<String> updatedEntries, RosterPacket.Item item,
RosterEntry entry){
private void addUpdateEntry(Collection<String> addedEntries, Collection<String> updatedEntries,
Collection<String> unchangedEntries, RosterPacket.Item item, RosterEntry entry) {
RosterEntry oldEntry = entries.put(item.getUser(), entry);
if (oldEntry == null) {
addedEntries.add(item.getUser());
@ -697,6 +696,9 @@ public class Roster {
RosterPacket.Item oldItem = RosterEntry.toRosterItem(oldEntry);
if (!oldEntry.equalsDeep(entry) || !item.getGroupNames().equals(oldItem.getGroupNames())) {
updatedEntries.add(item.getUser());
} else {
// Record the entry as unchanged, so that it doesn't end up as deleted entry
unchangedEntries.add(item.getUser());
}
}
@ -950,79 +952,72 @@ public class Roster {
IQ result = (IQ)packet;
if (!result.getType().equals(IQ.Type.RESULT)) {
LOGGER.severe("Roster result IQ not of type result");
LOGGER.severe("Roster result IQ not of type result. Packet: " + result.toXML());
return;
}
Collection<String> addedEntries = new ArrayList<String>();
Collection<String> updatedEntries = new ArrayList<String>();
Collection<String> deletedEntries = new ArrayList<String>();
Collection<String> unchangedEntries = new ArrayList<String>();
if (packet instanceof RosterPacket) {
nonemptyResult((RosterPacket) packet, addedEntries, updatedEntries, deletedEntries);
// Non-empty roster result. This stanza contains all the roster elements.
RosterPacket rosterPacket = (RosterPacket) packet;
String version = rosterPacket.getVersion();
// Ignore items without valid subscription type
ArrayList<Item> validItems = new ArrayList<RosterPacket.Item>();
for (RosterPacket.Item item : rosterPacket.getRosterItems()) {
if (hasValidSubscriptionType(item)) {
validItems.add(item);
}
}
for (RosterPacket.Item item : validItems) {
RosterEntry entry = new RosterEntry(item.getUser(), item.getName(),
item.getItemType(), item.getItemStatus(), Roster.this, connection);
addUpdateEntry(addedEntries, updatedEntries, unchangedEntries, item, entry);
}
// Delete all entries which where not added or updated
Set<String> toDelete = new HashSet<String>();
for (RosterEntry entry : entries.values()) {
toDelete.add(entry.getUser());
}
toDelete.removeAll(addedEntries);
toDelete.removeAll(updatedEntries);
toDelete.removeAll(unchangedEntries);
for (String user : toDelete) {
deleteEntry(deletedEntries, entries.get(user));
}
if (rosterStore != null) {
rosterStore.resetEntries(validItems, version);
}
removeEmptyGroups();
}
else {
emptyResult(addedEntries, updatedEntries);
// Empty roster result as defined in RFC6121 2.6.3. An empty roster result basically
// means that rosterver was used and the roster hasn't changed (much) since the
// version we presented the server. So we simply load the roster from the store and
// await possible further roster pushes.
for (RosterPacket.Item item : rosterStore.getEntries()) {
RosterEntry entry = new RosterEntry(item.getUser(), item.getName(),
item.getItemType(), item.getItemStatus(), Roster.this, connection);
addUpdateEntry(addedEntries, updatedEntries, unchangedEntries, item, entry);
}
}
rosterInitialized = true;
synchronized (Roster.this) {
rosterInitialized = true;
Roster.this.notifyAll();
}
// Fire event for roster listeners.
fireRosterChangedEvent(addedEntries, updatedEntries, deletedEntries);
}
private void emptyResult(Collection<String> addedEntries, Collection<String> updatedEntries) {
for(RosterPacket.Item item : rosterStore.getEntries()){
RosterEntry entry = new RosterEntry(item.getUser(), item.getName(),
item.getItemType(), item.getItemStatus(), Roster.this, connection);
addUpdateEntry(addedEntries,updatedEntries,item,entry);
}
}
private void addEntries(Collection<String> addedEntries, Collection<String> updatedEntries,
Collection<String> deletedEntries, String version, Collection<Item> items) {
for (RosterPacket.Item item : items) {
RosterEntry entry = new RosterEntry(item.getUser(), item.getName(),
item.getItemType(), item.getItemStatus(), Roster.this, connection);
addUpdateEntry(addedEntries, updatedEntries, item, entry);
}
List<String> toDelete = new ArrayList<String>();
// Delete all entries which where not added or updated
for (RosterEntry entry : entries.values()) {
toDelete.add(entry.getUser());
}
toDelete.removeAll(addedEntries);
toDelete.removeAll(updatedEntries);
for (String user : toDelete) {
deleteEntry(deletedEntries, entries.get(user));
}
if (rosterStore != null) {
rosterStore.resetEntries(items, version);
}
}
private void nonemptyResult(RosterPacket packet, Collection<String> addedEntries,
Collection<String> updatedEntries, Collection<String> deletedEntries) {
RosterPacket rosterPacket = (RosterPacket) packet;
String version = rosterPacket.getVersion();
// Ignore items without valid subscription type
ArrayList<Item> validItems = new ArrayList<RosterPacket.Item>();
for (RosterPacket.Item item : rosterPacket.getRosterItems()) {
if (hasValidSubscriptionType(item)) {
validItems.add(item);
}
}
addEntries(addedEntries, updatedEntries, deletedEntries, version, validItems);
removeEmptyGroups();
}
}
/**
@ -1055,22 +1050,13 @@ public class Roster {
Collection<String> addedEntries = new ArrayList<String>();
Collection<String> updatedEntries = new ArrayList<String>();
Collection<String> deletedEntries = new ArrayList<String>();
Collection<String> unchangedEntries = new ArrayList<String>();
// We assured abouve that the size of items is exaclty 1, therefore we are able to
// safely retrieve this single item here.
Item item = items.iterator().next();
processPushItem(addedEntries, updatedEntries, deletedEntries, version, item);
connection.sendPacket(IQ.createResultIQ(rosterPacket));
removeEmptyGroups();
// Fire event for roster listeners.
fireRosterChangedEvent(addedEntries, updatedEntries, deletedEntries);
}
private void processPushItem(Collection<String> addedEntries, Collection<String> updatedEntries,
Collection<String> deletedEntries, String version, Item item) {
RosterEntry entry = new RosterEntry(item.getUser(), item.getName(),
item.getItemType(), item.getItemStatus(), Roster.this, connection);
item.getItemType(), item.getItemStatus(), Roster.this, connection);
if (item.getItemType().equals(RosterPacket.ItemType.remove)) {
deleteEntry(deletedEntries, entry);
@ -1079,11 +1065,17 @@ public class Roster {
}
}
else if (hasValidSubscriptionType(item)) {
addUpdateEntry(addedEntries, updatedEntries, item, entry);
addUpdateEntry(addedEntries, updatedEntries, unchangedEntries, item, entry);
if (rosterStore != null) {
rosterStore.addEntry(item, version);
}
}
connection.sendPacket(IQ.createResultIQ(rosterPacket));
removeEmptyGroups();
// Fire event for roster listeners.
fireRosterChangedEvent(addedEntries, updatedEntries, deletedEntries);
}
}
}