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Assertions and comments.

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This commit is contained in:
akwizgran
2011-09-19 16:42:27 +01:00
parent 4b97be897e
commit 7aeb6029a6
3 changed files with 30 additions and 12 deletions
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14
components/net/sf/briar/db/DatabaseComponentImpl.java
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@@ -271,15 +271,21 @@ DatabaseCleaner.Callback {
*/
private int updateAncestorSendability(T txn, MessageId m, boolean increment)
throws DbException {
GroupId group = db.getGroup(txn, m);
int affected = 0;
boolean changed = true;
while(changed) {
// Stop if the message has no parent
MessageId parent = db.getParent(txn, m);
if(parent == null) break;
// Stop if the parent isn't in the database
if(!db.containsMessage(txn, parent)) break;
if(!db.getGroup(txn, m).equals(db.getGroup(txn, parent))) break;
Integer parentSendability = db.getSendability(txn, parent);
assert parentSendability != null;
// Stop if the message and the parent aren't in the same group
assert group != null;
GroupId parentGroup = db.getGroup(txn, parent);
if(!group.equals(parentGroup)) break;
// Increment or decrement the parent's sendability
int parentSendability = db.getSendability(txn, parent);
if(increment) {
parentSendability++;
changed = parentSendability == 1;
@@ -291,7 +297,9 @@ DatabaseCleaner.Callback {
if(changed) affected++;
}
db.setSendability(txn, parent, parentSendability);
// Move on to the parent's parent
m = parent;
group = parentGroup;
}
return affected;
}