/// <summary>
/// Saves a storable object in the database.
/// </summary>
/// <param name="obj">Storable object to save.</param>
/// <param name="db">Database.</param>
/// <param name="context">Serialization context.</param>
/// <param name="saveChildren">If set to <c>false</c>, <see cref="IStorable"/> children are not saved.</param>
internal static void SaveObject(IStorable obj, Database db, SerializationContext context = null,
bool saveChildren = true)
{
if (context == null)
{
context = new SerializationContext(db, obj.GetType());
if (obj.ParentID != Guid.Empty)
{
context.RootID = obj.ParentID;
}
else
{
context.RootID = obj.ID;
}
}
context.SaveChildren = saveChildren;
context.Stack.Push(obj);
Document doc = db.GetDocument(DocumentsSerializer.StringFromID(obj.ID, context.RootID));
doc.Update((UnsavedRevision rev) => {
JObject jo = SerializeObject(obj, rev, context);
IDictionary <string, object> props = jo.ToObject <IDictionary <string, object> > ();
/* SetProperties sets a new properties dictionary, removing the attachments we
* added in the serialization */
if (rev.Properties.ContainsKey("_attachments"))
{
props ["_attachments"] = rev.Properties ["_attachments"];
}
rev.SetProperties(props);
return(true);
});
context.Stack.Pop();
}
/// <summary>
/// Store a collection of specified objects
/// </summary>
/// <param name="storableEnumerable">The objects collection to store.</param>
/// <param name="forceUpdate">Update all children ignoring the <see cref="!:IStorable.IsChanged" /> flag.</param>
/// <typeparam name="T">The type of the objects to store.</typeparam>
public void Store <T> (IEnumerable <T> storableEnumerable, bool forceUpdate = false) where T : IStorable
{
List <T> newDBObjects = new List <T> ();
lock (mutex) {
bool success = db.RunInTransaction(() => {
foreach (var t in storableEnumerable)
{
documentUpdated = false;
try {
var doc = db.GetExistingDocument(t.ID.ToString());
if (doc == null)
{
forceUpdate = true;
newDBObjects.Add(t);
}
StorableNode node;
ObjectChangedParser parser = new ObjectChangedParser();
parser.Parse(out node, t, Serializer.JsonSettings);
if (!forceUpdate)
{
Update(node);
}
if (forceUpdate)
{
DocumentsSerializer.SaveObject(t, db, saveChildren: true);
}
if (t.ID != Info.ID && (forceUpdate || documentUpdated))
{
Info.LastModified = DateTime.UtcNow;
DocumentsSerializer.SaveObject(Info, db);
}
foreach (IStorable storable in node.OrphanChildren)
{
db.GetDocument(DocumentsSerializer.StringFromID(storable.ID, t.ID)).Delete();
}
} catch (Exception ex) {
Log.Exception(ex);
return(false);
}
}
return(true);
});
if (!success)
{
throw new StorageException(Catalog.GetString("Error storing object from the storage"));
}
}
foreach (var newObject in newDBObjects)
{
// FIXME: StorageDeletedEvent should use a collection instead of having to send one event per storable
App.Current.EventsBroker.Publish(new StorageAddedEvent <T> {
Object = newObject, Sender = this
});
}
}
void Delete(StorableNode node, Guid rootID)
{
Guid id = node.Storable.ID;
db.GetDocument(DocumentsSerializer.StringFromID(id, rootID)).Delete();
foreach (StorableNode child in node.Children)
{
Delete(child, rootID);
}
}
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
IStorable storable = value as IStorable;
if (context.SaveChildren && !context.Stack.Contains(value) && !context.Cache.IsCached(storable.ID))
{
DocumentsSerializer.SaveObject(storable, context.DB, context);
context.Cache.AddReference(storable);
}
writer.WriteValue(DocumentsSerializer.StringFromID(storable.ID, context.RootID));
}