string IDataServiceStreamProvider.GetStreamETag(object entity, DataServiceOperationContext host)
{
if (entity is ExternalPicture)
{
ExternalPicture pict = entity as ExternalPicture;
return(pict.BlobETag);
}
if (entity is InternalPicture)
{
InternalPicture pict = entity as InternalPicture;
// ETag value is timestamp of the storage file
if (this.GetEntityState(pict) != EntityState.Added)
{
this.LoadFileStorageIfItsNotLoaded(pict, "PT.FK_FileStorage_InternalPictures1", "FileStorage");
if (pict.FileStorage == null)
{
return(null);
}
var creationTime = System.Data.Test.Astoria.FullTrust.TrustedMethods.GetFileCreationTime(DataPath(pict.FileStorage.Location));
return(string.Concat("\"", creationTime.ToString("dd MMMM yyyy hh:mm:ss.ffffff", System.Globalization.DateTimeFormatInfo.InvariantInfo), "\""));
}
}
return(null);
}
/// <summary>
/// Create a new ExternalPicture object.
/// </summary>
/// <param name="ID">Initial value of Id.</param>
/// <param name="uRL">Initial value of URL.</param>
public static ExternalPicture CreateExternalPicture(int ID, string uRL)
{
ExternalPicture externalPicture = new ExternalPicture();
externalPicture.Id = ID;
externalPicture.URL = uRL;
return(externalPicture);
}
Uri IDataServiceStreamProvider.GetReadStreamUri(object entity, DataServiceOperationContext host)
{
Uri uri = null;
if (entity is ExternalPicture)
{
ExternalPicture pict = entity as ExternalPicture;
if (!string.IsNullOrEmpty(pict.URL))
{
string url = pict.URL;
if (url.Contains("${"))
{
url = replaceParams(url, GetParamsTable(host));
}
uri = new Uri(url, UriKind.RelativeOrAbsolute);
}
}
return(uri);
}
string IDataServiceStreamProvider.GetStreamContentType(object entity, DataServiceOperationContext host)
{
if (entity is InternalPicture)
{
InternalPicture pict = entity as InternalPicture;
this.LoadFileStorageIfItsNotLoaded(pict, "PT.FK_FileStorage_InternalPictures1", "FileStorage");
return(pict.FileStorage.ContentType);
}
else if (entity is ExternalPicture)
{
ExternalPicture pict = entity as ExternalPicture;
return(string.IsNullOrEmpty(pict.ContentType) ? "text/plain" : pict.ContentType);
}
else
{
throw new NotSupportedException("Unexpected entity type!");
}
}
/// <summary>
/// Create a new ExternalPicture object.
/// </summary>
/// <param name="ID">Initial value of Id.</param>
/// <param name="uRL">Initial value of URL.</param>
public static ExternalPicture CreateExternalPicture(int ID, string uRL) {
ExternalPicture externalPicture = new ExternalPicture();
externalPicture.Id = ID;
externalPicture.URL = uRL;
return externalPicture;
}
