private static void Write(this IEntityEntryWriter writer, IEnumerable <EntityEntry> entries, SerializationMode mode)
{
foreach (var entityEntry in entries.OrderedByMetadata( ))
{
writer.Write(entityEntry, mode);
}
}
public static async Task <int> SaveChangesAsync(this DbContext context, IEntityEntryWriter writer, CancellationToken cancellationToken = default)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
if (writer == null)
{
throw new ArgumentNullException(nameof(writer));
}
var snapshots = context.ChangeTracker.Entries( ).GetSnapshots( );
var rowCount = await context.SaveChangesAsync(cancellationToken)
.ConfigureAwait(false);
foreach (var snapshot in snapshots)
{
writer.Write(snapshot.EntityEntry,
snapshot.EntityState == EntityState.Added ? SerializationMode.ValuesGeneratedOnAdd :
SerializationMode.ValuesGeneratedOnUpdate,
snapshot.Properties);
}
return(rowCount);
}
public static void SerializeGraphChanges(this DbContext context, IEntityEntryWriter writer, params object [] items)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
if (writer == null)
{
throw new ArgumentNullException(nameof(writer));
}
writer.Write(context.Graph(items).Where(IsChanged), SerializationMode.Changes);
}
public static void SerializeChanges(this DbContext context, IEntityEntryWriter writer)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
if (writer == null)
{
throw new ArgumentNullException(nameof(writer));
}
writer.Write(context.ChangeTracker.Entries( ).Where(IsChanged), SerializationMode.Changes);
}
public static void SerializeGraph(this DbContext context, IEntityEntryWriter writer, object item)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
if (writer == null)
{
throw new ArgumentNullException(nameof(writer));
}
writer.Write(context.Graph(item), SerializationMode.Full);
}
public static int SaveChanges(this DbContext context, IEntityEntryWriter writer)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
if (writer == null)
{
throw new ArgumentNullException(nameof(writer));
}
var snapshots = context.ChangeTracker.Entries( ).GetSnapshots( );
var rowCount = context.SaveChanges( );
foreach (var snapshot in snapshots)
{
writer.Write(snapshot.EntityEntry,
snapshot.EntityState == EntityState.Added ? SerializationMode.ValuesGeneratedOnAdd :
SerializationMode.ValuesGeneratedOnUpdate,
snapshot.Properties);
}
return(rowCount);
}