Examples of org.jgroups.util.Digest$MyIterator

org.jgroups.util.Digest
A message digest containing - for each member - the highest seqno delivered (hd) and the highest seqno received (hr). The seqnos are stored according to the order of the members in the associated membership, ie. seqnos[0] is the hd for member members[0], seqnos[1] is the hr for the same member, seqnos[2] is the hd for members[1] and so on.
Field 'members' may refer to the View.members, e.g. in a JoinRsp where we ship a view and a digest referring to the view's membership. This is done to conserve memory.
This class is immutable except for 2 cases:
- The contents are read when unmarshalling (readFrom())
- The membership is set with members(). This must only be done directly after unmarshalling
@author Bela Ban

     *     the new view
     * </ol>
     */
    private void sendMergeView(Vector<Address> coords, MergeData combined_merge_data) {                      
        View v;
        Digest d;


        if(coords == null || combined_merge_data == null)
            return;


        v=combined_merge_data.view;

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            }
            else if(empty) {
                if(!flushProtocolInStack) {
                    down_prot.down(new Event(Event.CLOSE_BARRIER));
                }
                Digest digest=(Digest)down_prot.down(new Event(Event.GET_DIGEST));
                if(log.isDebugEnabled())
                    log.debug("digest is " + digest + ", getting application state");
                try {
                    requestApplicationStates(sender, digest, !flushProtocolInStack);
                }

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    }


    /** Set the digest and the send the state up to the application */
    void handleStateRsp(StateHeader hdr, byte[] state) {
        Address sender=hdr.sender;
        Digest tmp_digest=hdr.my_digest;
        String id=hdr.state_id;
        Address state_sender=hdr.sender;


        waiting_for_state_response=false;
        if(isDigestNeeded()) {

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        }
    }


    private void handleFlushReconcile(Message msg, FlushHeader fh) {
        Address requester = msg.getSrc();
        Digest reconcileDigest = fh.digest;


        if(log.isDebugEnabled())
            log.debug("Received FLUSH_RECONCILE at " + localAddress
                      + " passing digest to NAKACK "
                      + reconcileDigest);

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                if(log.isDebugEnabled())
                    log.debug("Received START_FLUSH at " + localAddress
                              + " but not sending BLOCK up");
            }


            Digest digest=(Digest)down_prot.down(new Event(Event.GET_DIGEST));
            FlushHeader fhr=new FlushHeader(FlushHeader.FLUSH_COMPLETED, fh.viewID);
            fhr.addDigest(digest);


            Message msg=new Message(flushStarter);
            msg.putHeader(getName(), fhr);

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            needsReconciliationPhase = enable_reconciliation && flushCompleted
                                       && hasVirtualSynchronyGaps();
            if(needsReconciliationPhase){


                Digest d = findHighestSequences();
                msg = new Message();
                msg.setFlag(Message.OOB);
                FlushHeader fh = new FlushHeader(FlushHeader.FLUSH_RECONCILE,
                                                 currentViewId(),
                                                 flushMembers);

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    }


    private boolean hasVirtualSynchronyGaps() {
        ArrayList<Digest> digests = new ArrayList<Digest>();
        digests.addAll(flushCompletedMap.values());
        Digest firstDigest = digests.get(0);
        List<Digest> remainingDigests = digests.subList(1, digests.size());
        for(Digest digest:remainingDigests){
            Digest diff = firstDigest.difference(digest);
            if(diff != Digest.EMPTY_DIGEST){
                return true;
            }
        }
        return false;

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        }
        return false;
    }


    private Digest findHighestSequences() {
        Digest result = null;
        List<Digest> digests = new ArrayList<Digest>(flushCompletedMap.values());


        result = digests.get(0);
        List<Digest> remainingDigests = digests.subList(1, digests.size());


        for(Digest digestG:remainingDigests){
            result = result.highestSequence(digestG);
        }
        return result;
    }

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                          + flushCompletedMap
                          + " flushMembers "
                          + flushMembers);
        }
        if(flushOkCompleted){
            Digest digest = (Digest) down_prot.down(new Event(Event.GET_DIGEST));
            FlushHeader fh = new FlushHeader(FlushHeader.FLUSH_COMPLETED, viewID);
            fh.addDigest(digest);
            m.putHeader(getName(), fh);
            down_prot.down(new Event(Event.MSG, m));
            if(log.isDebugEnabled())

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    /**
     * Get the view and digest and send back both (MergeData) in the form of a MERGE_RSP to the sender.
     * If a merge is already in progress, send back a MergeData with the merge_rejected field set to true.
     */
    public void handleMergeRequest(Address sender, ViewId merge_id) {
        Digest digest;
        View view;


        if(sender == null) {
            if(log.isErrorEnabled()) log.error("sender == null; cannot send back a response");
            return;

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