public static Task <T> GetAsync <T>(this IMongoCollection <T> collection, Expression <Func <T, bool> > filter, UpdateDefinition <T> factory)
where T : Entity
=> collection.FindOneAndUpdateAsync(filter, factory.SetOnInsert(x => x.Timestamp, DateTimeOffset.UtcNow),
new FindOneAndUpdateOptions <T, T>
{
IsUpsert = true,
ReturnDocument = ReturnDocument.After
});
protected virtual UpdateDefinition <T> ToUpdateDefinition(Updates <T> updates)
{
UpdateDefinition <T> updateDefinition = Builders <T> .Update.Combine();
if (updates.Sets != null)
{
foreach (Update <T> update in updates.Sets)
{
updateDefinition = updateDefinition.Set(update.PropertyExpression, update.Value);
}
}
if (updates.Increments != null)
{
foreach (Update <T> update in updates.Increments)
{
updateDefinition = updateDefinition.Inc(update.PropertyExpression, update.Value);
}
}
if (updates.SetOnInserts != null)
{
foreach (Update <T> update in updates.SetOnInserts)
{
updateDefinition = updateDefinition.SetOnInsert(update.PropertyExpression, update.Value);
}
}
if (updates.Pushes != null)
{
foreach (UpdateCollection <T> update in updates.Pushes)
{
var property = new ExpressionFieldDefinition <T>(update.PropertyExpression);
updateDefinition = updateDefinition.Push(property, update.Value);
}
}
if (updates.Pulls != null)
{
foreach (UpdateCollection <T> update in updates.Pulls)
{
var property = new ExpressionFieldDefinition <T>(update.PropertyExpression);
updateDefinition = updateDefinition.Pull(property, update.Value);
}
}
return(updateDefinition);
}
public static UpdateDefinition <TDocument> SetOnInsertAllMappedMembers <TDocument>(
this UpdateDefinition <TDocument> update, TDocument item
, params Expression <Func <TDocument, object> >[] excludeMembers)
{
excludeMembers = excludeMembers ?? new Expression <Func <TDocument, object> > [0];
List <string> excludeMemberNames = excludeMembers.Select(p => GetMemberName(p)).ToList();
Type itemType = typeof(TDocument);
List <PropertyInfo> mappedMembers = GetMappedMembers(itemType);
foreach (PropertyInfo prop in mappedMembers)
{
if (excludeMemberNames.Contains(prop.Name))
{
continue;
}
object value = prop.GetValue(item);
update = update.SetOnInsert(prop.Name, value);
}
return(update);
}
public bool Upsert(FilterDefinition <T> filter, UpdateDefinition <T> update)
{
return(Update(filter, update.SetOnInsert(i => i.CreatedOn, DateTime.Now), updateOptions: new UpdateOptions {
IsUpsert = true
}));
}
