/// <summary>
/// Create a fully inflated, properly typed instance based on the specified parameters. If the galleryObjectType
/// parameter is All, None, or Unknown, then an additional call to the data store is made
/// to determine the object's type. If no object is found that matches the ID and gallery object type, an
/// <see cref="UnsupportedMediaObjectTypeException" /> exception is thrown. When you know the type you want (<see cref="Album" />,
/// <see cref="Image" />, etc), specify the exact galleryObjectType, or call the specific Factory method that
/// loads the desired type, as that is more efficient. This method is guaranteed to not return null.
/// </summary>
/// <param name="id">An integer representing the <see cref="IGalleryObject.Id">ID</see> of the media object or album to retrieve from the
/// data store.</param>
/// <param name="galleryObjectType">The type of gallery object that the id parameter represents. If the type is
/// unknown, the Unknown enum value can be specified. Specify the actual type if possible (e.g. Video, Audio, Image,
/// etc.), as it is more efficient.</param>
/// <returns>Returns an <see cref="IGalleryObject" /> based on the ID. This method is guaranteed to not return null.</returns>
/// <exception cref="UnsupportedMediaObjectTypeException">Thrown when a particular media object type is requested (e.g. Image, Video, etc.),
/// but no media object with the specified ID is found in the data store.</exception>
/// <exception cref="InvalidAlbumException">Thrown when an album is requested but no album with the specified ID is found in the data store.</exception>
public static IGalleryObject LoadGalleryObjectInstance(int id, GalleryObjectType galleryObjectType)
{
// If the gallery object type is vague, we need to figure it out.
if ((galleryObjectType == GalleryObjectType.All) || (galleryObjectType == GalleryObjectType.None) || (galleryObjectType == GalleryObjectType.Unknown))
{
galleryObjectType = HelperFunctions.DetermineGalleryObjectType(id);
}
IGalleryObject go = new NullObjects.NullGalleryObject();
switch (galleryObjectType)
{
case GalleryObjectType.Album:
{
go = Factory.LoadAlbumInstance(id, false); break;
}
case GalleryObjectType.Image:
{
go = Factory.LoadImageInstance(id); break;
}
case GalleryObjectType.Video:
{
go = Factory.LoadVideoInstance(id); break;
}
case GalleryObjectType.Audio:
{
go = Factory.LoadAudioInstance(id); break;
}
case GalleryObjectType.Generic:
case GalleryObjectType.Unknown:
{
go = Factory.LoadGenericMediaObjectInstance(id); break;
}
default:
{
throw new UnsupportedMediaObjectTypeException();
}
}
return go;
}
private IDisplayObject GetDefaultAlbumThumbnail()
{
string defaultFilename = String.Empty;
IGallerySettings gallerySetting = Factory.LoadGallerySetting(GalleryId);
int maxLength = gallerySetting.MaxThumbnailLength;
float ratio = gallerySetting.EmptyAlbumThumbnailWidthToHeightRatio;
int width, height;
if (ratio > 1)
{
width = maxLength;
height = Convert.ToInt32((float)maxLength / ratio);
}
else
{
height = maxLength;
width = Convert.ToInt32((float)maxLength * ratio);
}
IDisplayObject albumThumbnail = null;
NullGalleryObject nullGalleryObject = null;
try
{
nullGalleryObject = new NullGalleryObject();
albumThumbnail = DisplayObject.CreateInstance(nullGalleryObject, defaultFilename, width, height, DisplayObjectType.Thumbnail, new NullDisplayObjectCreator());
albumThumbnail.MediaObjectId = this._thumbnailMediaObjectId;
albumThumbnail.FileNamePhysicalPath = defaultFilename;
}
catch (Exception)
{
if (albumThumbnail != null)
albumThumbnail.Dispose();
if (nullGalleryObject != null)
nullGalleryObject.Dispose();
throw;
}
return albumThumbnail;
}
/// <summary>
/// Gets a writable collection of the gallery objects in the album containing <paramref name="galleryItem" />, including
/// <paramref name="galleryItem" />. If <paramref name="galleryItem" /> does not represent a valid object, an empty
/// collection is returned. Guaranteed to not return null.
/// </summary>
/// <param name="galleryItem">A gallery item. The object must have the <see cref="GalleryItem.Id" /> and
/// <see cref="GalleryItem.ItemType" /> properties specified; the others are optional.</param>
/// <returns>An instance of <see cref="IGalleryObjectCollection" />.</returns>
private static IGalleryObjectCollection GetWritableSiblingGalleryObjects(GalleryItem galleryItem)
{
IGalleryObject parentAlbum;
try
{
int parentAlbumId;
if ((GalleryObjectType)galleryItem.ItemType == GalleryObjectType.Album)
{
parentAlbumId = LoadAlbumInstance(galleryItem.Id, false).Parent.Id;
}
else
{
parentAlbumId = Factory.LoadMediaObjectInstance(galleryItem.Id).Parent.Id;
}
parentAlbum = LoadAlbumInstance(parentAlbumId, true, true);
}
catch (InvalidAlbumException)
{
parentAlbum = new NullGalleryObject();
}
catch (InvalidMediaObjectException)
{
parentAlbum = new NullGalleryObject();
}
return parentAlbum.GetChildGalleryObjects();
}
/// <summary>
/// Create a fully inflated, properly typed media object instance based on the specified data record and
/// belonging to the specified parent album.
/// </summary>
/// <param name="dr">A data record containing information about the media object.</param>
/// <param name="parentAlbum">The album that contains the media obect to be returned.</param>
/// <returns>Returns a fully inflated, properly typed media object instance based on the specified data
/// record and belonging to the specified parent album.</returns>
public static IGalleryObject LoadMediaObjectInstance(IDataRecord dr, IAlbum parentAlbum)
{
// SQL:
// SELECT
// mo.MediaObjectID, mo.FKAlbumID, mo.Title, mo.HashKey, mo.ThumbnailFilename, mo.ThumbnailWidth, mo.ThumbnailHeight,
// mo.ThumbnailSizeKB, mo.OptimizedFilename, mo.OptimizedWidth, mo.OptimizedHeight, mo.OptimizedSizeKB,
// mo.OriginalFilename, mo.OriginalWidth, mo.OriginalHeight, mo.OriginalSizeKB, mo.ExternalHtmlSource, mo.ExternalType, mo.Seq,
// mo.CreatedBy, mo.DateAdded, mo.LastModifiedBy, mo.DateLastModified, mo.IsPrivate
// FROM [gs_MediaObject] mo JOIN [gs_Album] a ON mo.FKAlbumID = a.AlbumID
// WHERE mo.MediaObjectID = @MediaObjectId AND a.FKGalleryID = @GalleryID
if (dr == null)
throw new ArgumentNullException("dr");
GalleryObjectType goType = HelperFunctions.DetermineMediaObjectType(dr["OriginalFilename"].ToString(), Convert.ToInt32(dr["OriginalWidth"]), Convert.ToInt32(dr["OriginalHeight"]), dr["ExternalHtmlSource"].ToString());
IGalleryObject go = new NullObjects.NullGalleryObject();
switch (goType)
{
case GalleryObjectType.Image:
{
#region Create Image
go = new Image(
Int32.Parse(dr["MediaObjectId"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["FKAlbumID"].ToString(), CultureInfo.InvariantCulture),
parentAlbum,
dr["Title"].ToString().Trim(),
dr["HashKey"].ToString().Trim(),
dr["ThumbnailFilename"].ToString(),
Int32.Parse(dr["ThumbnailWidth"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["ThumbnailHeight"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["ThumbnailSizeKB"].ToString(), CultureInfo.InvariantCulture),
dr["OptimizedFilename"].ToString().Trim(),
Int32.Parse(dr["OptimizedWidth"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["OptimizedHeight"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["OptimizedSizeKB"].ToString(), CultureInfo.InvariantCulture),
dr["OriginalFilename"].ToString().Trim(),
Int32.Parse(dr["OriginalWidth"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["OriginalHeight"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["OriginalSizeKB"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["Seq"].ToString(), CultureInfo.InvariantCulture),
dr["CreatedBy"].ToString().Trim(),
Convert.ToDateTime(dr["DateAdded"].ToString(), CultureInfo.CurrentCulture),
dr["LastModifiedBy"].ToString().Trim(),
HelperFunctions.ToDateTime(dr["DateLastModified"]),
Convert.ToBoolean(dr["IsPrivate"].ToString(), CultureInfo.CurrentCulture),
true,
null);
AddMediaObjectMetadata(go);
break;
#endregion
}
case GalleryObjectType.Video:
{
#region Create Video
go = new Video(
Int32.Parse(dr["MediaObjectId"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["FKAlbumID"].ToString(), CultureInfo.InvariantCulture),
parentAlbum, // If null, Image ctor uses the previous parameter to do an Album CreateInstance.
dr["Title"].ToString().Trim(),
dr["HashKey"].ToString().Trim(),
dr["ThumbnailFilename"].ToString(),
Int32.Parse(dr["ThumbnailWidth"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["ThumbnailHeight"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["ThumbnailSizeKB"].ToString(), CultureInfo.InvariantCulture),
dr["OriginalFilename"].ToString().Trim(),
Int32.Parse(dr["OriginalWidth"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["OriginalHeight"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["OriginalSizeKB"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["Seq"].ToString(), CultureInfo.InvariantCulture),
dr["CreatedBy"].ToString().Trim(),
Convert.ToDateTime(dr["DateAdded"].ToString(), CultureInfo.CurrentCulture),
dr["LastModifiedBy"].ToString().Trim(),
HelperFunctions.ToDateTime(dr["DateLastModified"]),
Convert.ToBoolean(dr["IsPrivate"].ToString(), CultureInfo.CurrentCulture),
true,
null);
break;
#endregion
}
case GalleryObjectType.Audio:
{
#region Create Audio
go = new Audio(
Int32.Parse(dr["MediaObjectId"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["FKAlbumID"].ToString(), CultureInfo.InvariantCulture),
parentAlbum, // If null, Image ctor uses the previous parameter to do an Album CreateInstance.
dr["Title"].ToString().Trim(),
dr["HashKey"].ToString().Trim(),
dr["ThumbnailFilename"].ToString(),
Int32.Parse(dr["ThumbnailWidth"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["ThumbnailHeight"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["ThumbnailSizeKB"].ToString(), CultureInfo.InvariantCulture),
dr["OriginalFilename"].ToString().Trim(),
Int32.Parse(dr["OriginalWidth"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["OriginalHeight"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["OriginalSizeKB"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["Seq"].ToString(), CultureInfo.InvariantCulture),
dr["CreatedBy"].ToString().Trim(),
Convert.ToDateTime(dr["DateAdded"].ToString(), CultureInfo.CurrentCulture),
dr["LastModifiedBy"].ToString().Trim(),
HelperFunctions.ToDateTime(dr["DateLastModified"]),
Convert.ToBoolean(dr["IsPrivate"].ToString(), CultureInfo.CurrentCulture),
true,
null);
break;
#endregion
}
case GalleryObjectType.Generic:
case GalleryObjectType.Unknown:
{
#region Create Generic Media Object
go = new GenericMediaObject(
Int32.Parse(dr["MediaObjectId"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["FKAlbumID"].ToString(), CultureInfo.InvariantCulture),
parentAlbum, // If null, Image ctor uses the previous parameter to do an Album CreateInstance.
dr["Title"].ToString().Trim(),
dr["HashKey"].ToString().Trim(),
dr["ThumbnailFilename"].ToString(),
Int32.Parse(dr["ThumbnailWidth"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["ThumbnailHeight"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["ThumbnailSizeKB"].ToString(), CultureInfo.InvariantCulture),
dr["OriginalFilename"].ToString().Trim(),
Int32.Parse(dr["OriginalWidth"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["OriginalHeight"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["OriginalSizeKB"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["Seq"].ToString(), CultureInfo.InvariantCulture),
dr["CreatedBy"].ToString().Trim(),
Convert.ToDateTime(dr["DateAdded"].ToString(), CultureInfo.CurrentCulture),
dr["LastModifiedBy"].ToString().Trim(),
HelperFunctions.ToDateTime(dr["DateLastModified"]),
Convert.ToBoolean(dr["IsPrivate"].ToString(), CultureInfo.CurrentCulture),
true,
null);
break;
#endregion
}
case GalleryObjectType.External:
{
#region Create External
go = new ExternalMediaObject(
Int32.Parse(dr["MediaObjectId"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["FKAlbumID"].ToString(), CultureInfo.InvariantCulture),
parentAlbum, // If null, Image ctor uses the previous parameter to do an Album CreateInstance.
dr["Title"].ToString().Trim(),
dr["HashKey"].ToString().Trim(),
dr["ThumbnailFilename"].ToString(),
Int32.Parse(dr["ThumbnailWidth"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["ThumbnailHeight"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["ThumbnailSizeKB"].ToString(), CultureInfo.InvariantCulture),
dr["OriginalFilename"].ToString().Trim(),
Int32.Parse(dr["OriginalWidth"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["OriginalHeight"].ToString(), CultureInfo.InvariantCulture),
Int32.Parse(dr["OriginalSizeKB"].ToString(), CultureInfo.InvariantCulture),
dr["ExternalHtmlSource"].ToString().Trim(),
MimeTypeEnumHelper.ParseMimeTypeCategory(dr["ExternalType"].ToString().Trim()),
Int32.Parse(dr["Seq"].ToString(), CultureInfo.InvariantCulture),
dr["CreatedBy"].ToString(),
Convert.ToDateTime(dr["DateAdded"].ToString(), CultureInfo.CurrentCulture),
dr["LastModifiedBy"].ToString(),
HelperFunctions.ToDateTime(dr["DateLastModified"]),
Convert.ToBoolean(dr["IsPrivate"].ToString(), CultureInfo.CurrentCulture),
true);
break;
#endregion
}
default:
{
throw new UnsupportedMediaObjectTypeException(Path.Combine(parentAlbum.FullPhysicalPath, dr["OriginalFilename"].ToString()));
}
}
return go;
}
private static IGalleryObject RetrieveMediaObjectFromDataStore(int id, GalleryObjectType galleryObjectType, IAlbum parentAlbum)
{
#if DEBUG
tt.Tools.StartingMethod(id, galleryObjectType);
#endif
// If the gallery object type is vague, we need to figure it out.
if ((galleryObjectType == GalleryObjectType.All) || (galleryObjectType == GalleryObjectType.None) || (galleryObjectType == GalleryObjectType.Unknown))
{
galleryObjectType = HelperFunctions.DetermineGalleryObjectType(id);
}
IGalleryObject go = new NullObjects.NullGalleryObject();
switch (galleryObjectType)
{
case GalleryObjectType.Image:
{
go = RetrieveImageFromDataStore(id, parentAlbum); break;
}
case GalleryObjectType.Video:
{
go = RetrieveVideoFromDataStore(id, parentAlbum); break;
}
case GalleryObjectType.Audio:
{
go = RetrieveAudioFromDataStore(id, parentAlbum); break;
}
case GalleryObjectType.External:
{
go = RetrieveExternalFromDataStore(id, parentAlbum); break;
}
case GalleryObjectType.Generic:
case GalleryObjectType.Unknown:
{
go = RetrieveGenericMediaObjectFromDataStore(id, parentAlbum); break;
}
default:
{
throw new InvalidMediaObjectException(id);
}
}
return go;
}
