/// <summary>
/// Creates the locator async.
/// </summary>
/// <param name="locatorType">Type of the locator.</param>
/// <param name="asset">The asset.</param>
/// <param name="accessPolicy">The access policy.</param>
/// <param name="startTime">The start time.</param>
/// <returns>A function delegate that returns the future result to be available through the Task<ILocator>.</returns>
public Task <ILocator> CreateLocatorAsync(LocatorType locatorType, IAsset asset, IAccessPolicy accessPolicy, DateTime?startTime)
{
AccessPolicyBaseCollection.VerifyAccessPolicy(accessPolicy);
AssetCollection.VerifyAsset(asset);
AssetData assetData = (AssetData)asset;
LocatorData locator = new LocatorData
{
AccessPolicy = (AccessPolicyData)accessPolicy,
Asset = assetData,
Type = (int)locatorType,
StartTime = startTime,
};
locator.InitCloudMediaContext(this._cloudMediaContext);
DataServiceContext dataContext = this.DataContextFactory.CreateDataServiceContext();
dataContext.AttachTo(AssetCollection.AssetSet, asset);
dataContext.AttachTo(AccessPolicyBaseCollection.AccessPolicySet, accessPolicy);
dataContext.AddObject(LocatorSet, locator);
dataContext.SetLink(locator, AccessPolicyPropertyName, accessPolicy);
dataContext.SetLink(locator, AssetPropertyName, asset);
return(dataContext
.SaveChangesAsync(locator)
.ContinueWith <ILocator>(
t =>
{
t.ThrowIfFaulted();
assetData.InvalidateLocatorsCollection();
return (LocatorData)t.AsyncState;
},
TaskContinuationOptions.ExecuteSynchronously));
}
