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Code Issues Releases Wiki Activity

Introduced unchangedEntries in Roster logic

Browse source 
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);
}
}
}