private static bool GraphUpdateSettingRdfTypes(IDatasetChange change)
{
var update = change as GraphUpdate;
return(update != null &&
update.AddedQuads.All(q => q.Predicate.Equals(Node.ForUri(Rdf.type))) &&
(update.AddedQuads.Any(q => q.Object.Equals(Node.ForUri(Foaf.Person))) ||
update.AddedQuads.Any(q => q.Object.Equals(Node.ForUri(Foaf.Agent)))));
}
public IEnumerable <SparqlUpdateCommand> CreateCommands(IDatasetChange change)
{
var changeType = change.GetType();
if (_commandFactories.ContainsKey(changeType))
{
return(_commandFactories[changeType](change));
}
throw new ArgumentOutOfRangeException("change", string.Format("Unsupported dataset change type {0}", changeType.Name));
}
/// <inheritdoc />
public override IDatasetChange MergeWith(IDatasetChange other)
{
if (other is GraphReconstruct)
{
return(other);
}
var otherUpdate = (GraphUpdate)other;
var removalsCombined = RemovedQuads.Union(otherUpdate.RemovedQuads);
var additionsCombined = AddedQuads.Union(otherUpdate.AddedQuads);
return(new GraphUpdate(Entity, Graph, removalsCombined.ToArray(), additionsCombined.ToArray()));
}
private void AppendAndMerge(IDatasetChange datasetChange)
{
var nextChange = datasetChange;
lock (_syncLock)
{
var current = ChangesFor(datasetChange.Graph);
if (current.Count > 0 && current.Peek().CanMergeWith(nextChange))
{
var previousChange = current.Pop();
nextChange = previousChange.MergeWith(nextChange);
}
current.Push(nextChange);
}
}
/// <inheritdoc/>
public void Add(IDatasetChange datasetChange)
{
if (datasetChange.IsEmpty)
{
return;
}
if (datasetChange.Graph == null)
{
FreezeCurrentChanges();
_frozenChanges.Add(datasetChange);
}
else
{
AppendAndMerge(datasetChange);
}
}
/// <inheritdoc />
public override bool CanMergeWith(IDatasetChange other)
{
return((other is GraphUpdate || other is GraphReconstruct) && base.CanMergeWith(other));
}
/// <summary>Merges this change the with another change.</summary> public abstract IDatasetChange MergeWith(IDatasetChange other);
/// <summary>Determines whether this instance can be merged with another.</summary>
/// <param name="other">The other change.</param>
public virtual bool CanMergeWith(IDatasetChange other)
{
return(Graph == other.Graph);
}
public override IDatasetChange MergeWith(IDatasetChange other)
{
throw new NotImplementedException();
}
private IEnumerable <SparqlUpdateCommand> CreateCommands(IDatasetChange change)
{
return(_sparqlCommandFactory.CreateCommands(change));
}
/// <inheritdoc />
public override IDatasetChange MergeWith(IDatasetChange other)
{
return(MergeWith((dynamic)other));
}
/// <inheritdoc />
public override IDatasetChange MergeWith(IDatasetChange other)
{
throw new InvalidOperationException("Cannot merge RemoveReferences with any other change");
}
/// <inheritdoc />
public override bool CanMergeWith(IDatasetChange other)
{
return(false);
}
/// <inheritdoc />
public override IDatasetChange MergeWith(IDatasetChange other)
{
throw new InvalidOperationException("Cannot merge EntityDelete with any other change");
}
