/// <summary>
/// Gets the blip targeted by this operation, creating a data document if it does not exist.
/// </summary>
/// <param name="target"></param>
/// <returns>blip targeted by this operation, never null</returns>
private IBlipData GetTargetBlip(IWaveletData target)
{
return target.GetDocument(BlipId)
?? target.CreateDocument(BlipId, Context.Creator,
new Collection<ParticipantId> { Context.Creator },
EmptyDocument.Empty,
Context.Timestamp, target.Version + Context.VersionIncrement);
}
protected override void DoApply(IWaveletData wavelet)
{
if (!(_position == EndPosition
? wavelet.AddParticipant(ParticipantId)
: wavelet.AddParticipant(ParticipantId, _position)))
{
throw new OperationException("Attempt to add a duplicate participant");
}
}
public override IList<WaveletOperation> ApplyAndReturnReverse(IWaveletData target)
{
var result = new ReadOnlyCollection<WaveletOperation>(new WaveletOperation[]
{
DoApplyInternal(target)
});
Update(target);
return result;
}
public override IList<WaveletOperation> ApplyAndReturnReverse(IWaveletData target)
{
WaveletOperationContext reverseContext = CreateReverseContext(target);
DoApply(target);
Update(target);
return new ReadOnlyCollection<WaveletOperation>(new WaveletOperation[]
{
new RemoveParticipantOperation(reverseContext, ParticipantId)
});
}
public override IList<WaveletOperation> ApplyAndReturnReverse(IWaveletData target)
{
var blip = GetTargetBlip(target);
var operations = BlipOp.ApplyAndReturnReverse(blip);
var ret = new List<WaveletOperation>();
foreach (var op in operations)
{
ret.Add(new WaveletBlipOperation(BlipId, op));
}
Update(target);
return ret;
}
private int DetermineParticipantPosition(IWaveletData target)
{
int position = 0;
foreach (ParticipantId participantId in target.GetParticipants())
{
if (participantId.Equals(ParticipantId))
{
return position;
}
position++;
}
throw new OperationException(string.Format("Attempt to remove non-existent participant: {0}", ParticipantId));
}
private VersionUpdateOperation DoApplyInternal(IWaveletData wavelet)
{
HashedVersion oldHashedVersion = wavelet.HashedVersion;
if (string.IsNullOrEmpty(_docId))
{
// Update blip version.
var blip = (IBlipData) wavelet.GetDocument(_docId);
long newWaveletVersion = wavelet.Version + Context.VersionIncrement;
long newDocVersion = _useFixedBlipInfo ? _docVersion : newWaveletVersion;
long oldDocVersion = blip.LastModifiedVersion = newDocVersion;
return new VersionUpdateOperation(Context.Creator, -Context.VersionIncrement, oldHashedVersion, _docId,
oldDocVersion, true);
}
return new VersionUpdateOperation(Context.Creator, -Context.VersionIncrement, oldHashedVersion);
}
protected override void DoApply(IWaveletData wavelet)
{
var blip = GetTargetBlip(wavelet);
BlipOp.Apply(blip);
}
public override IList<WaveletOperation> ApplyAndReturnReverse(IWaveletData target)
{
WaveletOperation reverse = new NoOp(CreateReverseContext(target));
Apply(target);
return new ReadOnlyCollection<WaveletOperation>(new[] {reverse});
}
protected override void DoApply(IWaveletData wavelet)
{
// do nothing.
}
protected override void DoApply(IWaveletData wavelet)
{
DoApplyInternal(wavelet);
}
public OperationTestBase()
{
Context = new WaveletOperationContext(Fred, ContextTimestamp, 1);
WaveletData = A.Fake<IWaveletData>();
}
protected override void DoApply(IWaveletData wavelet)
{
if (!wavelet.RemoveParticipant(ParticipantId))
throw new OperationException(string.Format("Attempt to delete non-existent participant: {0}",
ParticipantId));
}
