/**
* Deserializes the snapshot contained in the {@link WaveletSnapshot} into an {@link
* ObservableWaveletData}.
*
* @param snapshot the {@link WaveletSnapshot} to deserialize.
* @throws OperationException if the ops in the snapshot can not be applied.
* @throws InvalidParticipantAddress
* @throws InvalidIdException
*/
public static ObservableWaveletData deserializeWavelet(WaveletSnapshot snapshot, WaveId waveId)
throws OperationException, InvalidParticipantAddress, InvalidIdException {
ObservableWaveletData.Factory<? extends ObservableWaveletData> factory =
WaveletDataImpl.Factory.create(
ObservablePluggableMutableDocument.createFactory(SchemaCollection.empty()));
ParticipantId author = ParticipantId.of(snapshot.getCreator());
WaveletId waveletId = ModernIdSerialiser.INSTANCE.deserialiseWaveletId(snapshot.getWaveletId());
long creationTime = snapshot.getCreationTime();
ObservableWaveletData wavelet =
factory.create(
new EmptyWaveletSnapshot(
waveId,
waveletId,
author,
CoreWaveletOperationSerializer.deserialize(snapshot.getVersion()),
creationTime));
for (String participant : snapshot.getParticipantIdList()) {
wavelet.addParticipant(getParticipantId(participant));
}
for (DocumentSnapshot document : snapshot.getDocumentList()) {
addDocumentSnapshotToWavelet(document, wavelet);
}
wavelet.setVersion(snapshot.getVersion().getVersion());
wavelet.setLastModifiedTime(snapshot.getLastModifiedTime());
// The creator and creation time are set when the empty wavelet template is
// created above.
return wavelet;
}
@Override
public void onWaveletAdded(ObservableWavelet wavelet) {
String id = ModernIdSerialiser.INSTANCE.serialiseWaveletId(wavelet.getId());
if (channels.containsKey(id)) {
connect(id);
} else {
// This will trigger the onOperationChannelCreated callback below.
mux.createOperationChannel(wavelet.getId(), wavelet.getCreatorId());
}
}
@Override
public void onOperationChannelCreated(
OperationChannel channel, ObservableWaveletData snapshot, Accessibility accessibility) {
WaveletId wid = snapshot.getWaveletId();
String id = ModernIdSerialiser.INSTANCE.serialiseWaveletId(wid);
Preconditions.checkState(!channels.containsKey(id));
channels.put(id, channel);
if (wave.getWavelet(wid) != null) {
connect(id);
} else {
// This will trigger the onWaveletAdded callback above.
wave.addWavelet(operationalizer.operationalize(snapshot));
}
}
/**
* Serializes a snapshot for a wavelet.
*
* @param wavelet wavelet to snapshot
* @param hashedVersion hashed version of the wavelet
* @return a wavelet snapshot that contains all the information in the original wavelet.
*/
public static WaveletSnapshot serializeWavelet(
ReadableWaveletData wavelet, HashedVersion hashedVersion) {
WaveletSnapshot.Builder builder = WaveletSnapshot.newBuilder();
builder.setWaveletId(ModernIdSerialiser.INSTANCE.serialiseWaveletId(wavelet.getWaveletId()));
for (ParticipantId participant : wavelet.getParticipants()) {
builder.addParticipantId(participant.toString());
}
for (String id : wavelet.getDocumentIds()) {
ReadableBlipData data = wavelet.getDocument(id);
builder.addDocument(serializeDocument(data));
}
builder.setVersion(CoreWaveletOperationSerializer.serialize(hashedVersion));
builder.setLastModifiedTime(wavelet.getLastModifiedTime());
builder.setCreator(wavelet.getCreator().getAddress());
builder.setCreationTime(wavelet.getCreationTime());
return builder.build();
}
