SOQL Query not bringing back parent with no comments

Question

Due to the way this is structured I can't bring back groups with no comments/feeds in them, unfortunately trying to invert this brings up multiple errors as CollaborationGroup does not understand the relationship it has with CollaborationGroupFeed.

Here is the query:

SELECT 
        c.Parent.Id, 
        c.Parent.OwnerId, 
        c.Parent.CreatedById, 
        c.Id, 
        c.ParentId, 
        (
          SELECT 
                  Id, 
                  FeedItemId, 
                  ParentId
          FROM FeedComments
        )

FROM CollaborationGroupFeed c

I can't do it like this though for whatever reason:

SELECT 
        Id, 
        OwnerId, 
        CreatedById, 
        (
          SELECT 
                  Id, 
                  ParentId
          FROM CollaborationGroupFeeds
        ),
        (
          SELECT 
                  Id, 
                  FeedItemId, 
                  ParentId
          FROM FeedComments
        )

FROM CollaborationGroup

Didn't understand relationship 'CollaborationGroupFeed' in FROM part of query call.`

EDIT

So lets say I have a Group that I just created called Foo

[FOO]

Foo has one Post in it BlahPost

[FOO]
|
|_BlahPost

Lets say BlahPost has a comment (or several)

[FOO]
|
|_BlahPost
        |_Comment 1
        |_Comment 2

The query above will return all of this.

Now lets say I have a new Group Bar

[Bar]

Since there are NO posts/comments the query above returns nothing since I'm working from child to parent, and parent has no posts. I am looking for a query that starts at the parent CollaborationGroup and moves down to CollaborationFeed which will display FeedComment

Make more sense? The order is mess up, I'm working from the middle and should be working from the top

Answer 1

Try using Chatter in Apex, which is Chatter REST API resource actions exposed as static methods in the Apex ConnectApi namespace. It's a much easier way to access Chatter data.

http://www.salesforce.com/us/developer/docs/apexcode/Content/connectAPI_overview.htm

http://www.salesforce.com/us/developer/docs/apexcode/Content/apex_classes_connect_api.htm