protected override IAsyncResult BeginExecute(AsyncCodeActivityContext context, AsyncCallback callback, object state)
{
var curState = new WitGetWorkItemsForArtifactsAsyncState {
Action = this.RunCommand, ArtifactUris = this.ArtifactUris.Get(context), AsOfDate = this.AsOfDate.Get(context), WorkItemStore = this.WorkItemStore.Get(context)
};
var arg = curState;
context.UserState = arg;
return(arg.Action.BeginInvoke(arg, callback, state));
}
private IList <int> RunCommand(WitGetWorkItemsForArtifactsAsyncState asyncState)
{
var source = new HashSet <int>();
var artifactUriList = asyncState.ArtifactUris.Select(x => x.AbsoluteUri).ToArray();
foreach (var pair in asyncState.WorkItemStore.GetWorkItemIdsForArtifactUris(artifactUriList, asyncState.AsOfDate))
{
if (asyncState.Canceled)
{
break;
}
if (pair.Value != null)
{
source.UnionWith(pair.Value);
}
}
return(source.ToArray());
}