/**
* Merges the given peer info with the local info. A newer contribution of the same contributor
* replaces the older one. Otherwise no elements are removed by this method, ie the cache and
* commands are not truncated.
*/
private synchronized void merge(Collective peer) {
synchronized (cache) {
Iterator i = peer.cache.values().iterator();
while (i.hasNext()) {
ContributionBox cb = (ContributionBox) i.next();
ContributionBox x = (ContributionBox) cache.get(cb.contributor.name);
if (x == null || x.timeStamp < cb.timeStamp) {
cache.put(cb.contributor.name, cb);
}
}
}
synchronized (commands) {
Iterator i = peer.commands.entrySet().iterator();
while (i.hasNext()) {
Map.Entry e = (Map.Entry) i.next();
Comparable time = (Comparable) commands.get(e.getKey());
if (time == null || time.compareTo(e.getValue()) < 0) {
commands.put(e.getKey(), e.getValue());
}
}
}
cutToSize();
}
private void writeObject(ObjectOutputStream out) throws IOException {
synchronized (cache) {
synchronized (commands) {
out.writeObject(name);
// cache and commands are never null
out.writeLong(System.currentTimeMillis());
out.writeObject(myContribution);
out.writeInt(cache.size());
Iterator i = cache.values().iterator();
while (i.hasNext()) out.writeObject(i.next());
out.writeInt(commands.size());
i = commands.entrySet().iterator();
while (i.hasNext()) {
Map.Entry e = (Map.Entry) i.next();
long time = ((Long) e.getValue()).longValue();
out.writeObject(e.getKey());
out.writeLong(time);
}
}
}
}