@Luigi, thanks so much for your detailed response. Overall, these are
encouraging comments. A few follow-up queries, if I may:
>>> - Are there any limitations on the types of queries with which
>>> LiveQuery works? Can you put "LIVE" in front of any "SELECT" command and
>>> get a working LiveQuery?
>>> Not actually, current LiveQuery implementation only supports
> non-aggregate queries (eg. max() + GROUP BY) and does not allow ORDER BY.
Is support for aggregates and orderby (which presumably would have to be
accompanied by a limit, as in RethinkDB) planned?
>>> - More specifically, does LiveQuery work on queries involving links?
>>> For example, suppose you have a query that retrieves a set of blog posts
>>> and their linked comments -- does the LiveQuery send a change
>>> when a linked comment is inserted/updated/deleted in the LINKLIST?
>>> The query mechanism is triggered by the change of the target object, so
> the short answer is YES for insert/delete of elements in the linklist, but
> NO for the update of the internal status of linked objects (eg. if you
> change a comment's text)
I suppose it would be difficult to track changes on comment updates, as
there are no links from comments to posts. What if using a Graph model,
with edges (regular or lightweight) connecting posts to comments -- in that
case, presumably it would be easier to register changes on any connected
posts, no? Would that currently work, or is it something that might be
added in the future?
>>> - In RethinkDB, changefeeds involving orderby and limit can be
>>> configured to send the old and new offset of each change (via the
>>> include_offsets option) so you can easily insert the change into the
>>> place within the previously returned set of records. Is this possible
>>> LiveQuery, or do you have to manage the ordering manually on the client?
>>> Not yet, but it's in our todo list
Just to clarify, are you saying it already supports orderby/limit, and
the offsets* is on the todo list, or that you still need to add order/limit
support (which will include an offset option)?
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