protected override BaseMetadata updateFunc(BaseMetadata metadata)
{
if (String.IsNullOrEmpty(metadata.Location) || String.IsNullOrWhiteSpace(metadata.Location))
{
throw new DbEntityValidationException("Error updating metadata, location cannot be null, empty or whitespace");
}
BaseMetadata updateMetadata = Db.BaseMetadatas.FirstOrDefault(t => t.Id == metadata.Id);
if (updateMetadata == null)
{
throw new DbEntityValidationException("Cannot update non existing metadata: " + metadata.Id.ToString());
}
if (metadata is VideoMetadata)
{
Db.Entry <VideoMetadata>(updateMetadata as VideoMetadata).CurrentValues.SetValues(metadata);
}
else if (metadata is ImageMetadata)
{
Db.Entry <ImageMetadata>(updateMetadata as ImageMetadata).CurrentValues.SetValues(metadata);
}
else if (metadata is AudioMetadata)
{
Db.Entry <AudioMetadata>(updateMetadata as AudioMetadata).CurrentValues.SetValues(metadata);
}
//updateMetadata.calcHashes();
FileInfo info = new FileInfo(updateMetadata.Location);
info.Refresh();
updateMetadata.LastModifiedDate = info.LastWriteTime;
if (updateMetadata.Thumbnail != null)
{
if ((metadata.Thumbnail != null && updateMetadata.Thumbnail.Id != metadata.Thumbnail.Id) ||
metadata.Thumbnail == null)
{
Db.Thumbnails.Remove(updateMetadata.Thumbnail);
}
}
if (metadata.Thumbnail != null)
{
if (metadata.Thumbnail.Id != 0)
{
//thumbnail already exists
Thumbnail existing = Db.Thumbnails.FirstOrDefault(t => t.Id == metadata.Thumbnail.Id);
updateMetadata.Thumbnail = existing;
}
else
{
Db.Thumbnails.Add(metadata.Thumbnail);
updateMetadata.Thumbnail = metadata.Thumbnail;
}
}
TagDbCommands tagCommands = new TagDbCommands(Db);
// remove tags
for (int i = updateMetadata.Tags.Count - 1; i >= 0; i--)
{
Tag tag = updateMetadata.Tags.ElementAt(i);
if (!metadata.Tags.Contains(tag, EqualityComparer <Tag> .Default))
{
updateMetadata.Tags.Remove(tag);
tag.Used -= 1;
}
}
// add tags
foreach (Tag tag in metadata.Tags)
{
Tag result = tagCommands.getTagByName(tag.Name);
if (result == null)
{
result = tagCommands.create(tag);
}
if (!updateMetadata.Tags.Contains(result, EqualityComparer <Tag> .Default))
{
updateMetadata.Tags.Add(result);
result.Used += 1;
}
}
Db.SaveChanges();
updateMetadata.IsImported = true;
return(updateMetadata);
}
protected override BaseMetadata createFunc(BaseMetadata metadata)
{
if (String.IsNullOrEmpty(metadata.Location) || String.IsNullOrWhiteSpace(metadata.Location))
{
throw new DbEntityValidationException("Error creating metadata, location cannot be null, empty or whitespace");
}
if (Db.BaseMetadatas.Any(t => t.Location == metadata.Location && t.Name == metadata.Name))
{
throw new DbEntityValidationException("Cannot create metadata with duplicate location: " + metadata.Location);
}
BaseMetadata newMetadata = null;
if (metadata is VideoMetadata)
{
VideoMetadata videoMetadata = new VideoMetadata(metadata.Location, null);
Db.BaseMetadatas.Add(videoMetadata);
Db.Entry <VideoMetadata>(videoMetadata).CurrentValues.SetValues(metadata);
newMetadata = videoMetadata;
}
else if (metadata is ImageMetadata)
{
ImageMetadata imageMetadata = new ImageMetadata(metadata.Location, null);
Db.BaseMetadatas.Add(imageMetadata);
Db.Entry <ImageMetadata>(imageMetadata).CurrentValues.SetValues(metadata);
newMetadata = imageMetadata;
}
else if (metadata is AudioMetadata)
{
AudioMetadata audioMetadata = new AudioMetadata(metadata.Location, null);
Db.BaseMetadatas.Add(audioMetadata);
Db.Entry <AudioMetadata>(audioMetadata).CurrentValues.SetValues(metadata);
newMetadata = audioMetadata;
}
//newMetadata.calcHashes();
FileInfo info = new FileInfo(newMetadata.Location);
info.Refresh();
if (info.LastWriteTime < (DateTime)SqlDateTime.MinValue)
{
Logger.Log.Warn("LastWriteTime for " + newMetadata.Location + " smaller as SqlDateTime.MinValue");
newMetadata.LastModifiedDate = (DateTime)SqlDateTime.MinValue;
}
else
{
newMetadata.LastModifiedDate = info.LastWriteTime;
}
newMetadata.Id = 0;
if (metadata.Thumbnail != null)
{
if (metadata.Thumbnail.Id != 0)
{
//thumbnail already exists
Thumbnail existing = Db.Thumbnails.FirstOrDefault(t => t.Id == metadata.Thumbnail.Id);
newMetadata.Thumbnail = existing;
}
else
{
Db.Thumbnails.Add(metadata.Thumbnail);
newMetadata.Thumbnail = metadata.Thumbnail;
}
}
TagDbCommands tagCommands = new TagDbCommands(Db);
foreach (Tag tag in metadata.Tags)
{
Tag result = tagCommands.getTagByName(tag.Name);
if (result == null)
{
result = tagCommands.create(tag);
}
result.Used += 1;
newMetadata.Tags.Add(result);
}
int maxRetries = 15;
do
{
try
{
Db.SaveChanges();
maxRetries = 0;
}
catch (DbUpdateConcurrencyException e)
{
if (--maxRetries == 0)
{
throw;
}
foreach (DbEntityEntry conflictingEntity in e.Entries)
{
if (conflictingEntity.Entity is Tag)
{
// reload the conflicting tag (database wins)
conflictingEntity.Reload();
(conflictingEntity.Entity as Tag).Used += 1;
}
else
{
throw;
}
}
Random random = new Random();
Thread.Sleep(random.Next(50, 100));
}
} while (maxRetries > 0);
newMetadata.IsImported = true;
return(newMetadata);
}