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Re: [cdt-dev] Indexer conf call? 
Doug,
Is your objection really that there will only be one client of remote indexing (although PTP will likely use it also)? If this is the case, then does that mean that only features that are used by many companies will ever be available in CDT? It seems a kind of restrictive policy.
I understand the reluctance to introduce more complexity into CDT, but I think that the benchmarks will find that the performance of indexing large projects via a remote filesystem will be abysmal. File system operations tend to be very low level, and both the indexing operation and accessing the index remotely will likely result in a much larger amount of network traffic that simply accessing a remote database. Since we're dealing with millions of lines of code, I don't think this indexing model will be scalable. 

Cheers,

Greg

On Mar 15, 2007, at 2:44 PM, Doug Schaefer wrote:
I'm not totally sure what you guys are talking about. If you are talking about the DAO thing, I don't consider that an API of the CDT. In fact I'd rather people not know about it. It is a hack to allow the IBM to tear apart the CDT at their whim while adding complexity to an already too complex architecture. No one else will benefit from it. Did I mention I really don't like this thing? ;) Until someone shows me the real costs, I will continue to believe that indexing locally and accessing the files over the wire is 
the correct architecture, especially now that the CDT never parses an
unchanged file more than once.

So as such, the DAO interface can be changed whenever.

Doug Schaefer, QNX Software Systems
Eclipse CDT Project Lead, http://cdtdoug.blogspot.com


-----Original Message-----
From: cdt-dev-bounces@xxxxxxxxxxx [mailto:cdt-dev- bounces@xxxxxxxxxxx] On 
Behalf Of Chris Recoskie
Sent: Thursday, March 15, 2007 4:08 PM
To: CDT General developers list.
Subject: Re: [cdt-dev] Indexer conf call?

Hi Andrew,

I'm not sure if you mean whether we (IBM) have slack in terms of our
schedule for getting the items in before the freeze, or if you mean
whether
we have slack as to what release of CDT they would go in.

I'll try to answer both questions.

If (big if...) we were going to move all the clients to the DAO model
(call
hierarchy, type hierarchy, search, etc.), our internal schedule says we would be done this in early to mid April (I can break this down in detail if anyone is interested). If the work only has to make the feature freeze then there is a couple of weeks of slack. We didn't get consensus yet 
that
everyone has a warm fuzzy feeling about migrating all the clients though. For those clients that have already a good separation of UI and back end such as the call hierarchy and type hierarchy this would be a relatively simple process, but for other clients it might or might not take more work 
to factor out the back end.  For our part we are very concerned with
making
sure that quality is maintained and we've been rigorously running the UI 
tests to make sure we haven't been breaking anything.

In terms of CDT releases, that probably bears some discussion and
clarification...

Markus was concerned about making it for API freeze... I guess the
questions we need to answer are what are our (as in CDT's) APIs going to 
be
and are we actually prepared to freeze them in two weeks given that
feature
work is ongoing up until April 30th. Some things are obviously going to 
be
API (IIndex and the like, new project model stuff, etc.) but in terms of the back end to the views and other index based services it's not very 
clear to me what is going to be API and what isn't.

What is API and what is not has a lot of ramifications...
- What are we freezing for API freeze? Are we in fact freezing at M6? Personally I'm not sure it's practical to freeze API prior to feature work being done unless the system is very mature (i.e., if you are the Eclipse 
Platform and are not implementing  a huge amount of features in this
release you have a much easier time of freezing API ahead of your feature 
delivery than we do).  That's just my $0.02 CDN though...

- What can and cannot be put in between M6 and the feature freeze?
- What can and cannot be done in CDT 4.1 that doesn't make it into CDT 
4.0?
In a 4.1 we can add new API but can't break existing API.  To break
existing API we'd need a CDT 5.0, which would be a year from now.
In terms of our own desires at IBM, a year is a long time to wait because it doesn't line up well with our product release cycle (it already takes 
almost a year for us to deploy products based on CDT, so it would be
basically two years before anything consuming our proposed functionality 
would see the light of day if we had to wait until CDT 5.0 to get the
changes in).  It likely suits our purposes well enough if we can get
something done this year, and we are not entirely picky about which
release
that would be so long as the changes happen and we are not restricted by 
the versioning rules.

What are people's thoughts on the API issues?

===========================

Chris Recoskie
Team Lead, IBM CDT Team
IBM Toronto
http://www.eclipse.org/cdt




  From:   Andrew.Ferguson@xxxxxxxxxxx

  To:     "CDT General developers list." <cdt-dev@xxxxxxxxxxx>

  Date:   15/03/2007 03:06 PM

  Subject Re: [cdt-dev] Indexer conf call?
  :






hi,

I've posted minutes for the meeting here:
        http://wiki.eclipse.org/index.php/CDT/calls/IndexingMar2007_1
if I've missed anything then please add it in.
We ran out of time at the end, just as we were discussing the scale of 
changes proposed. My next
question was going to be if you have any slack in terms of whether these 
changes make CDT 4.0?

thanks,
Andrew
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