Examples of org.apache.kahadb.util.SequenceSet

org.apache.kahadb.util.SequenceSet
Keeps track of a added long values. Collapses ranges of numbers using a Sequence representation. Use to keep track of received message ids to find out if a message is duplicate or if there are any missing messages. @author chirino

        sd.messageReferences.put(messageSequence, count);
    }


    // new sub is interested in potentially all existing messages
    private void addAckLocationForRetroactiveSub(Transaction tx, StoredDestination sd, String subscriptionKey) throws IOException {
        SequenceSet allOutstanding = new SequenceSet();
        Iterator<Map.Entry<String, SequenceSet>> iterator = sd.ackPositions.iterator(tx);
        while (iterator.hasNext()) {
            SequenceSet set = iterator.next().getValue();
            for (Long entry : set) {
                allOutstanding.add(entry);
            }
        }
        sd.ackPositions.put(tx, subscriptionKey, allOutstanding);

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    }


    // on a new message add, all existing subs are interested in this message
    private void addAckLocationForNewMessage(Transaction tx, StoredDestination sd, Long messageSequence) throws IOException {
        for(String subscriptionKey : sd.subscriptionCache) {
            SequenceSet sequences = sd.ackPositions.get(tx, subscriptionKey);
            if (sequences == null) {
                sequences = new SequenceSet();
                sequences.add(new Sequence(messageSequence, messageSequence + 1));
                sd.ackPositions.add(tx, subscriptionKey, sequences);
            } else {
                sequences.add(new Sequence(messageSequence, messageSequence + 1));
                sd.ackPositions.put(tx, subscriptionKey, sequences);
            }


            Long count = sd.messageReferences.get(messageSequence);
            if (count == null) {

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        }
    }


    private void removeAckLocationsForSub(Transaction tx, StoredDestination sd, String subscriptionKey) throws IOException {
        if (!sd.ackPositions.isEmpty(tx)) {
            SequenceSet sequences = sd.ackPositions.remove(tx, subscriptionKey);
            if (sequences == null || sequences.isEmpty()) {
                return;
            }


            ArrayList<Long> unreferenced = new ArrayList<Long>();

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     * @throws IOException
     */
    private void removeAckLocation(Transaction tx, StoredDestination sd, String subscriptionKey, Long messageSequence) throws IOException {
        // Remove the sub from the previous location set..
        if (messageSequence != null) {
            SequenceSet range = sd.ackPositions.get(tx, subscriptionKey);
            if (range != null && !range.isEmpty()) {
                range.remove(messageSequence);
                if (!range.isEmpty()) {
                    sd.ackPositions.put(tx, subscriptionKey, range);
                } else {
                    sd.ackPositions.remove(tx, subscriptionKey);
                }

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