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Posted to java-dev@axis.apache.org by Aleksander Slominski <as...@cs.indiana.edu> on 2004/10/20 16:33:55 UTC
Re: [Axis2] Chat log 2004-10-20
i like inlined logs (no attachments) so here is another version with
summary.
BTW: in future chats we should be choosing official log poster ...
summary: today discussion was about WSDL processing and WOM (WSDL
Object Model):
http://wiki.apache.org/ws/FrontPage/Architecture/WSDL
and in particular about API, data binding issues, relation to WSDL4J,
use of XMLBeans,
metadata (get/setProperty).
we have also talked about transport and HTTP 202 support in
servlets and phased handlers and how they are supposed to work.
please make sure to visit and add topics to agenda for next week chat at:
http://wiki.apache.org/ws/ChatAgenda/20041027
http://wiki.apache.org/ws/ChatAgenda
thanks,
alek
[10/20/2004 8:00 AM] <Ias> Hi Glen
[10/20/2004 8:01 AM] =-= YOU are now known as alek
[10/20/2004 8:01 AM] <gdaniels> Hi Alek
[10/20/2004 8:01 AM] <Ajith1030> Hi all
[10/20/2004 8:02 AM] <Ias> Hi Alek,
[10/20/2004 8:02 AM] <gdaniels> Morning (evening, whatever) Ajith
[10/20/2004 8:02 AM] <Ias> Hi Ajith
[10/20/2004 8:02 AM] -->| Srinath (~Srinath@220.247.251.118) has joined
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[10/20/2004 8:03 AM] <Ias> Hi Srinath
[10/20/2004 8:03 AM] <gdaniels> It's that time, folks.
[10/20/2004 8:03 AM] <alek> Hello
[10/20/2004 8:03 AM] <Srinath> hi all
[10/20/2004 8:03 AM] <Srinath> hi glen :)
[10/20/2004 8:04 AM] -->| Chinthaka_away (~chinthaka@220.247.231.132)
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[10/20/2004 8:04 AM] <gdaniels> Hi Srinath!
[10/20/2004 8:04 AM] =-= Chinthaka_away is now known as Chinthaka
[10/20/2004 8:04 AM] <Chinthaka> hi all
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[10/20/2004 8:04 AM] <Ias> Hi Chinthaka
[10/20/2004 8:04 AM] <gdaniels> So... WSDL processing was apparently
first on today's agenda?
[10/20/2004 8:04 AM] <Srinath> :)
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[10/20/2004 8:05 AM] <Srinath> may be we start with second chatura wsdl
man is coming and any second
[10/20/2004 8:05 AM] <Ajith1030>
http://wiki.apache.org/ws/ChatAgenda/20041020
[10/20/2004 8:06 AM] <Srinath> shall I bring up handlin gbugs first
[10/20/2004 8:06 AM] <Srinath> jira for axis2
[10/20/2004 8:06 AM] <Chinthaka> thats good Srianth
[10/20/2004 8:06 AM] <Srinath> gbug=bug
[10/20/2004 8:06 AM] <Chinthaka> Srinath :)
[10/20/2004 8:06 AM] <gdaniels> yes, should be pretty easy to set up
[10/20/2004 8:06 AM] <farhaan> okay, so what do you propose? I would
prefer to have a a new jIRA project created
[10/20/2004 8:06 AM] <gdaniels> What did you want to discuss about it?
[10/20/2004 8:06 AM] <gdaniels> farhaan: yup
[10/20/2004 8:06 AM] <Srinath> should we set up a jira project to axis2
[10/20/2004 8:07 AM] <Srinath> or do it inside axis jira
[10/20/2004 8:07 AM] <gdaniels> +1 new
[10/20/2004 8:07 AM] <Srinath> +1 new
[10/20/2004 8:08 AM] <Srinath> ok let us catch dims for that i belive
[10/20/2004 8:08 AM] <Ajith1030> I woluld also say new
[10/20/2004 8:08 AM] <gdaniels> OK
[10/20/2004 8:08 AM] <alek> +1 new
[10/20/2004 8:09 AM] <Srinath> next the OM how to proceed from where we are
[10/20/2004 8:09 AM] <Chinthaka> wait
[10/20/2004 8:09 AM] <Chinthaka> shall we discuss this wsdl first
[10/20/2004 8:10 AM] <Chinthaka> its accrued from last chat :)
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[10/20/2004 8:10 AM] <gdaniels> We're waiting for Chathura
[10/20/2004 8:10 AM] <gdaniels> ah
[10/20/2004 8:10 AM] <Chinthaka> he came just now
[10/20/2004 8:10 AM] <gdaniels> speak of the devil
[10/20/2004 8:10 AM] <chathura> hi sorry guy
[10/20/2004 8:10 AM] <Srinath> Chat is in :)
[10/20/2004 8:10 AM] <Chinthaka> :D
[10/20/2004 8:10 AM] <gdaniels> no problemo
[10/20/2004 8:10 AM] <Srinath> then to wsdli belive
[10/20/2004 8:10 AM] <chathura> +1:)
[10/20/2004 8:10 AM] <gdaniels> So OK, WSDL first then OM
[10/20/2004 8:11 AM] <Ajith1030> yeah Chathura : how is your progress
[10/20/2004 8:11 AM] <chathura> ok will tell you what i have in mind
[10/20/2004 8:11 AM] <chathura> ok i have a prototype impl of a possible WOM
[10/20/2004 8:11 AM] <Chinthaka> all of us are staring at him and he is
bit nervous :)
[10/20/2004 8:11 AM] <chathura> WOM = WSDL object Model
[10/20/2004 8:12 AM] <chathura>
http://wiki.apache.org/ws/FrontPage/Architecture/WSDL
[10/20/2004 8:12 AM] <chathura> its the architecture i have in mind
which is pretty abstract(of course)
[10/20/2004 8:13 AM] <chathura> THis WOM of mine will be based on the
WSDL 2.0 component model
[10/20/2004 8:14 AM] <gdaniels> Are we expecting the single WOM model to
deal with both WSDL 2.0 and 1.1?
[10/20/2004 8:14 AM] <chathura> but there are sufficient provisions that
we can keep the
[10/20/2004 8:14 AM] <chathura> wsdl 1.1:)
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[10/20/2004 8:15 AM] <Srinath_> hi are you seening this
[10/20/2004 8:15 AM] <Chinthaka> yeah, y not :)
[10/20/2004 8:15 AM] <Chinthaka> seems you guys having some prob
[10/20/2004 8:15 AM] <gdaniels> I notice you're storing things in the
current WOM proto as LinkedLists... wouldn't Maps make more sense,
indexed by QNames/NCNames as appropriate?
[10/20/2004 8:16 AM] <Srinath_> i think the net goes down and come back :D
[10/20/2004 8:16 AM] <Srinath_> :(:(
[10/20/2004 8:16 AM] <gdaniels> Srinath: yes, we see your clone :)
[10/20/2004 8:16 AM] <Chinthaka> :)
[10/20/2004 8:16 AM] <Srinath_> :D
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[10/20/2004 8:17 AM] <Srinath_> ajith can you address the glen Q about OM?
[10/20/2004 8:17 AM] <chathura> glen:sounds good
[10/20/2004 8:17 AM] <Ajith> sorry guys
[10/20/2004 8:17 AM] <Ajith> what was the question??
[10/20/2004 8:17 AM] <Chinthaka> Did Glen asked anything abt OM ?
[10/20/2004 8:17 AM] <Ajith> I missed a whole lot
[10/20/2004 8:18 AM] <gdaniels> <gdaniels> I notice you're storing
things in the current WOM proto as LinkedLists... wouldn't Maps make
more sense, indexed by QNames/NCNames as appropriate?
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[10/20/2004 8:18 AM] <gdaniels> I think that was for Chathura, though -
he wrote the current WOM, yes?
[10/20/2004 8:18 AM] <chathura> well one more thig that i forgot to mension
[10/20/2004 8:18 AM] <Srinath_> sorry it is WOM :)
[10/20/2004 8:18 AM] <chathura> glen : didnt get you :(
[10/20/2004 8:19 AM] <gdaniels> In WSDLDefinitions.java, for instance -
you have the interfaces stored in a LinkedList.
[10/20/2004 8:20 AM] <chathura> yes yes
[10/20/2004 8:20 AM] <chathura> the thing i wanted to tell you was
[10/20/2004 8:20 AM] <chathura> the need for external xml binding mechanism
[10/20/2004 8:20 AM] <gdaniels> i.e. an external reader/writer?
[10/20/2004 8:20 AM] <chathura> more or less the direcion is toward xml
beans i guess
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[10/20/2004 8:21 AM] <chathura> no i was talking about the schema
parsing and the data representation of the WOM
[10/20/2004 8:22 AM] <chathura> glen : yes your one plus and the data
representation of the WOM
[10/20/2004 8:22 AM] <gdaniels> ok, are you suggesting using XMLBeans on
the WSDL schema to generate the classes?
[10/20/2004 8:22 AM] <Ias> Actually Beehive WSM does that.
[10/20/2004 8:23 AM] <chathura> think the Ajith is having some problems
with the chat
[10/20/2004 8:23 AM] <gdaniels> hm. I would think that would tie it too
closely to a particular version....
[10/20/2004 8:23 AM] <Ias> A similar case happened to EWS.
[10/20/2004 8:24 AM] <Ias> Once we used JAXB, and Geronimo folks wanted
us to change to XMLBeans.
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[10/20/2004 8:24 AM] <Ajith_rana> guys we are having probs here at UOC
[10/20/2004 8:24 AM] <chathura> i think the code gen part should be
clearly seperated from this WOM of mine
[10/20/2004 8:24 AM] <Ajith_rana> so our connection seems to break always
[10/20/2004 8:25 AM] <Ias> Now it seems common that we need to make some
abstract layer for supporting various binding solutions.
[10/20/2004 8:25 AM] <gdaniels> OK, so you're really suggesting using
the codegen to read and write the XML? That means that you'll have to
write/read the XMLBeans objects to/from the WOM objects...
[10/20/2004 8:25 AM] <chathura> so glen the code generation will be
based on the WOM inside of which we may use xml beans and it will
eventually help us
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[10/20/2004 8:26 AM] <gdaniels> I'm not sure there's a big enough payoff
there to make XMLBeans worth it over a simpler solution, but I'll hold
judgement until I see it.
[10/20/2004 8:26 AM] <Srinath__> well am keep cloning :(
[10/20/2004 8:26 AM] <gdaniels> I'm not sure there's NOT a big enough
payoff either. :)
[10/20/2004 8:27 AM] <gdaniels> If we have 10 Srinaths, we'll get this
thing done a lot faster!
[10/20/2004 8:27 AM] <Srinath__> oh :D
[10/20/2004 8:27 AM] <Ias> :-)
[10/20/2004 8:27 AM] <Ajith_rana> :D
[10/20/2004 8:28 AM] <chathura> glen:i didnt get what you really mean
[10/20/2004 8:28 AM] <alek> :-)
[10/20/2004 8:28 AM] <chathura> we ll pretty much depend on the xml
beans to d the schema parsing
[10/20/2004 8:28 AM] <chathura> we need a schema parser anyway
[10/20/2004 8:28 AM] <alek> so WOM will have one common API and support
both WSDL2 and WSDL1.1?
[10/20/2004 8:29 AM] <gdaniels> chathura: I'm saying that I'm a little
concerned that the XMLBeans model generated from WSDL will duplicate an
awful lot of what's going to be in the abstract WOM, and that it might
be faster/easier to have a specific reader/writer class that does
WOM<->XML directly.
[10/20/2004 8:29 AM] <Srinath__> we got to decide what to use 4 xml
schmema interface + parsing
[10/20/2004 8:29 AM] <Ajith_rana> yeah we can the schema support from XB!
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[10/20/2004 8:29 AM] <chathura> alek: yes
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[10/20/2004 8:30 AM] <chathura> glen: my guess is that would lead us to
the place we are at in axis 1.1
[10/20/2004 8:30 AM] <gdaniels> We wanted to have pluggable data binding
frameworks, right? If that's the case then we want to think about what
we need from the abstract part...
[10/20/2004 8:31 AM] <chathura> i agree
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[10/20/2004 8:31 AM] <gdaniels> chathura: In Axis 1.1 we use WSDL4J
[10/20/2004 8:32 AM] <gdaniels> WSDL4J does the WSDL writing/reading for us
[10/20/2004 8:32 AM] <chathura> and we do our own schema parsing
[10/20/2004 8:32 AM] <chathura> yah
[10/20/2004 8:32 AM] <alek> glen: by pluggable do you mean that WSDL
code generator can support many XML<->Java classes mappings?
[10/20/2004 8:32 AM] <Ias> What's going on with WSDL4J 2?
[10/20/2004 8:32 AM] <gdaniels> Ias: Nothing yet
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[10/20/2004 8:32 AM] <Ias> Glen: then when?
[10/20/2004 8:32 AM] <gdaniels> Ias: We discussed contributing our
version to JCP when we were in Sri Lanka...
[10/20/2004 8:33 AM] <Ias> Glen: JCP? not Apache?
[10/20/2004 8:33 AM] <gdaniels> alek: Yes, but probably not
mix-and-match, just one at a time.
[10/20/2004 8:33 AM] <gdaniels> Ias: "our" == Apache's
[10/20/2004 8:33 AM] <chathura> glen: do you not think that schema
parsing is a good reason for us to think of pluggable data binding
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[10/20/2004 8:34 AM] <gdaniels> chathura: Oh - you're talking about
XMLBeans for parsing the schemas
[10/20/2004 8:34 AM] <gdaniels> INSIDE the WSDL
[10/20/2004 8:34 AM] <gdaniels> not the schema for WSDL itself
[10/20/2004 8:34 AM] <chathura> not really
[10/20/2004 8:34 AM] <gdaniels> I misunderstood, I think
[10/20/2004 8:34 AM] <chathura> its like this
[10/20/2004 8:35 AM] <Ias> Glen: I see. What I remember about that is
WSDL4J 2 code base will come from IBM. Therefore, it is not ready yet.
[10/20/2004 8:35 AM] <chathura> xml beans (or the data binding ) will be
used for two things i belive
[10/20/2004 8:35 AM] <gdaniels> Ias: No, WSDL4J2 code base isn't really
being worked on yet IIRC. We suggested contributing our thing as the
basis for WSDL4J2 work when we're done.
[10/20/2004 8:36 AM] <gdaniels> I might be remembering wrong, though.
[10/20/2004 8:36 AM] <chathura> one is to parse the schema component
that is embedded in the WSDL itself
[10/20/2004 8:36 AM] <chathura> THis will go into the WSDLOM Builder
inthe diagram in http://wiki.apache.org/ws/FrontPage/Architecture/WSDL
[10/20/2004 8:36 AM] <gdaniels> chathura: +1
[10/20/2004 8:36 AM] <chathura> :)
[10/20/2004 8:37 AM] <Ias> +1 from me too.
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[10/20/2004 8:37 AM] <chathura> that was the first one by the way:)
[10/20/2004 8:37 AM] <gdaniels> chathura: and thing number two?
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[10/20/2004 8:37 AM] <Ias> Srinath comes and goes :-)
[10/20/2004 8:37 AM] <Srinath> :(
[10/20/2004 8:37 AM] <Srinath> at least am keep cloning
[10/20/2004 8:38 AM] <Srinath> :D
[10/20/2004 8:38 AM] <chathura> No 2 is that we will use the xml beans
object model to represent the schema component inside the WOM
[10/20/2004 8:38 AM] <Chinthaka> :)
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[10/20/2004 8:38 AM] <chathura> its not in da code as yet
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[10/20/2004 8:40 AM] <gdaniels> OK
[10/20/2004 8:40 AM] <chathura> so WOM will have the wsdl component
model plus references to a object model provided to us by a data binding
tool
[10/20/2004 8:40 AM] <gdaniels> sounds good
[10/20/2004 8:40 AM] <chathura> :)
[10/20/2004 8:40 AM] <gdaniels> WOM interfaces need to make it easy to
find components from various places by name
[10/20/2004 8:41 AM] <gdaniels> WOM also needs to be able to hang
arbitrary data off each component
[10/20/2004 8:41 AM] <chathura> glen: i agree with you we ll adopt a
better serch mechanism
[10/20/2004 8:41 AM] <gdaniels> (so we can attach handler chains, etc)
[10/20/2004 8:41 AM] <chathura> explain a bit more pls
[10/20/2004 8:42 AM] <gdaniels> each component should have a
getProperty/setProperty
[10/20/2004 8:42 AM] <gdaniels> that lets us attach handler chains to
the Input/Output WSDL objects, as discussed in SL
[10/20/2004 8:42 AM] <gdaniels> (operation/service too)
[10/20/2004 8:42 AM] <gdaniels> plus attach any other metadata we might need
[10/20/2004 8:43 AM] <chathura> so there will be some thing like a
ComponentContext
[10/20/2004 8:43 AM] <chathura> ?
[10/20/2004 8:43 AM] <gdaniels> more like a WSDLComponent base class
[10/20/2004 8:44 AM] <gdaniels> which implements the property-storing stuff
[10/20/2004 8:45 AM] <alek> what is Property? named Object?
[10/20/2004 8:45 AM] <gdaniels> right
[10/20/2004 8:45 AM] <chathura> i was thinking some think like
MessageContext like thing per component yah the impl would converge us
to what you said
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[10/20/2004 8:45 AM] <gdaniels> Chain chain =
(Chain)wsdlOperation.getProperty("axis.handlerChain")
[10/20/2004 8:46 AM] <sanjiva> hi Guys
[10/20/2004 8:46 AM] <sanjiva> sorry I'm rather late ..
[10/20/2004 8:46 AM] <gdaniels> yo Sanjiva
[10/20/2004 8:46 AM] <chathura> hi sir
[10/20/2004 8:46 AM] <gdaniels> no worries, but we assigned you a whole
lot of code to write while we were waiting. :D
[10/20/2004 8:46 AM] <sanjiva> what's the topic today?
[10/20/2004 8:46 AM] <sanjiva> ah cool :)
[10/20/2004 8:46 AM] <Chinthaka> :)
[10/20/2004 8:46 AM] <gdaniels> we're talking WSDL right now
[10/20/2004 8:47 AM] <gdaniels> coming to a close on it for today, I think
[10/20/2004 8:47 AM] <gdaniels> chathura's working on the object model,
in early stages
[10/20/2004 8:47 AM] <Ias> Hi Sanjiva
[10/20/2004 8:47 AM] <alek> hi sanjiva
[10/20/2004 8:47 AM] <gdaniels> we discussed the general idea of
plugging in a databinding/schema framework to do the <types> work, but
haven't talked specifics yet.
[10/20/2004 8:47 AM] <gdaniels> XMLBeans first, pluggability after, I think.
[10/20/2004 8:48 AM] <sanjiva> ok sounds good ... but we will have the
option of exposing OM directly to the app if they want it so right?
[10/20/2004 8:48 AM] <gdaniels> right
[10/20/2004 8:48 AM] <sanjiva> I mean basically without any type mapping
[10/20/2004 8:48 AM] <gdaniels> yes
[10/20/2004 8:48 AM] <sanjiva> OK
[10/20/2004 8:48 AM] <gdaniels> will we do schema validation in that case?
[10/20/2004 8:49 AM] <sanjiva> good question .. not yet I guess but
certainly going forward that would be a good thing to do
[10/20/2004 8:49 AM] <gdaniels> +1 not yet, and also to aim for that later
[10/20/2004 8:49 AM] <sanjiva> bit of a challenge to do schema
validation while doing deferred tree building with a pull parser but not
impossible for sure
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[10/20/2004 8:50 AM] <Chinthaka> deferred tree building in WOM ??
[10/20/2004 8:50 AM] <gdaniels> right - technically can't validate until
the whole infoset is there, but you can do stepwise validation with
faults happening whenever the bad elements are encountered...
[10/20/2004 8:50 AM] <gdaniels> Chinthaka: no, OM
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[10/20/2004 8:50 AM] <gdaniels> OK, speaking of OM.... should we move on
to that?
[10/20/2004 8:51 AM] <Chinthaka> are we talking abt OM ...... ??????
[10/20/2004 8:51 AM] <Chinthaka> or WOM .... ??? or both ??????
[10/20/2004 8:51 AM] <gdaniels> Chinthaka: Yes, Sanjiva and I were
talking about using OM directly instead of data binding when desired.
[10/20/2004 8:52 AM] <alek> it seems there are soem connectivity problems
[10/20/2004 8:52 AM] <sanjiva> Chinthaka: about givinmg the app
programmer a choice of programming models: type mapped into a java type
or as an XML infoset (aka OM)
[10/20/2004 8:52 AM] <alek> maybe we can move OM to next week and rehash
issues over mailing list?
[10/20/2004 8:53 AM] <gdaniels> Sure, we can do that.
[10/20/2004 8:53 AM] <gdaniels> Srinath, are you still there?
[10/20/2004 8:53 AM] <Chinthaka> alek : thats good
[10/20/2004 8:53 AM] <Chinthaka> its lightening here :(
[10/20/2004 8:53 AM] <gdaniels> looks like no :(
[10/20/2004 8:53 AM] <chathura> think the guys at uoc having problem
[10/20/2004 8:53 AM] <sanjiva> you mean to say he got hit??
[10/20/2004 8:54 AM] <sanjiva> ah ok ;-)
[10/20/2004 8:54 AM] <chathura> ;)
[10/20/2004 8:54 AM] <gdaniels> lightning == bad for the wires, not the
people! :)
[10/20/2004 8:54 AM] <gdaniels> So I checked in an engine prototype
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[10/20/2004 8:54 AM] <alek> unless you have really really really bad luckk
[10/20/2004 8:54 AM] <Chinthaka> people are infront of things powered by
wires ;)
[10/20/2004 8:55 AM] <gdaniels> Will do some more work on it, but it
shows some of the stuff we talked about in early form.
[10/20/2004 8:55 AM] <gdaniels> Hi Sam
[10/20/2004 8:55 AM] <Chinthaka> hi sam
[10/20/2004 8:55 AM] <Ias> Hi Sam
[10/20/2004 8:55 AM] <smeder> hi all
[10/20/2004 8:55 AM] <chathura> HI SAM
[10/20/2004 8:55 AM] <sanjiva> Glen: saw it .. I'll look at it too (have
to look at srinath's code too)
[10/20/2004 8:55 AM] <sanjiva> hi Sam!
[10/20/2004 8:56 AM] <Chinthaka> a small question ... can some one tell
me abt
[10/20/2004 8:56 AM] <Chinthaka> what Phased handlers means ... for
clarification
[10/20/2004 8:56 AM] <gdaniels> the idea that there are well-defined
"phases" with names that represent particular ordered parts of your
handler chain
[10/20/2004 8:56 AM] |<-- Srinath has left irc.freenode.net (Read error:
113 (No route to host))
[10/20/2004 8:57 AM] <alek> hi Sam
[10/20/2004 8:57 AM] <gdaniels> phases get used by Modules when they're
deploying handlers.
[10/20/2004 8:57 AM] |<-- dasarath has left irc.freenode.net (Read
error: 113 (No route to host))
[10/20/2004 8:57 AM] <gdaniels> So you can say stuff like "deploy this
handler as the first one in the dispatch phase", etc
[10/20/2004 8:57 AM] <Chinthaka> oki
[10/20/2004 8:58 AM] <gdaniels> a Phase as I built it has pre and post
conditions which get checked during execution
[10/20/2004 8:58 AM] <alek> what would be typical phases? ike security,
reliable messaging, ... ?
[10/20/2004 8:58 AM] <gdaniels> alek: eventually, yes
[10/20/2004 8:58 AM] <gdaniels> we'll start simple with just transport,
global, dispatch....
[10/20/2004 8:59 AM] <Chinthaka> did u see the protoype we created for
Engine ?
[10/20/2004 8:59 AM] <gdaniels> I've got it but haven't looked at it yet
- plan to today
[10/20/2004 9:00 AM] <chathura> i have looked at the transport sender thing
[10/20/2004 9:01 AM] <chathura> few issues in my mind
[10/20/2004 9:01 AM] <gdaniels> which transport sender thing?
[10/20/2004 9:02 AM] <chathura> The transport sender thing that we
talked about in the sumit
[10/20/2004 9:02 AM] <chathura> the one who will od the transport
realated stuff
[10/20/2004 9:03 AM] <chathura> eg: sending 202 at the end of the in
phase if necessary
[10/20/2004 9:03 AM] <chathura> one who will be the last handler in the out
[10/20/2004 9:04 AM] <chathura> basically the guy who will look up
whether ther are addressing things to be clarified before sending the out
[10/20/2004 9:04 AM] <gdaniels> I implemented that one of the ways we
talked about, by having the servlet (HTTPListener) send the 202 if it
gets control back but does not find a particular RESPONSE_SENT property
in the MC
[10/20/2004 9:05 AM] <chathura> yes yes thats what i ws talking
[10/20/2004 9:05 AM] <gdaniels> So if someone used the HTTPResponder
(the "sender") to send a response or a fault, the property gets set and
the HTTPListener does nothing when it gets control back. Otherwise it
sends a 202.
[10/20/2004 9:06 AM] <chathura> so if i am to tell you my question
[10/20/2004 9:06 AM] <gdaniels> The only problem with that approach is
that the 202 gets sent AFTER all the processing has happened. It might
also be nice to put in a way to have that happen earlier.
[10/20/2004 9:07 AM] <chathura> yah in mind i thought this transport
sender gets called the responder
[10/20/2004 9:07 AM] <chathura> befor out after in
[10/20/2004 9:07 AM] <sanjiva> glen: that would require another thread
.. otherwise the servlet rules will be broken (?)
[10/20/2004 9:07 AM] <gdaniels> sanjiva: no, I don't think so
[10/20/2004 9:07 AM] <gdaniels> Anyone can write and flush the servlet
response.
[10/20/2004 9:08 AM] <gdaniels> We just need to know when to do it.
[10/20/2004 9:08 AM] <sanjiva> hmmm .. even before the return from
doPost()?
[10/20/2004 9:09 AM] <gdaniels> There's some kind of "switch responders"
hook that would perform activity like sending the 202 and flushing.
[10/20/2004 9:09 AM] <gdaniels> Yes, I'm pretty sure.
[10/20/2004 9:09 AM] <gdaniels> Not positive though.
[10/20/2004 9:09 AM] <chathura> what will happen in cases like
ws-eventing where the same message is sent out to many listeners
[10/20/2004 9:09 AM] <chathura> two questions
[10/20/2004 9:10 AM] <gdaniels> chathura: ? Not sure what you're getting
at with eventing.
[10/20/2004 9:10 AM] <sanjiva> so you mean if I do this in in doPost: {
.. code to send reponse, flush; sleep (100000); return } then the client
will receive the 200 OK response before the sleep expires?
[10/20/2004 9:10 AM] <chathura> does the current addressing allow us to
have many reply tos
[10/20/2004 9:10 AM] <gdaniels> sanjiva: I think so, yes.
[10/20/2004 9:10 AM] <gdaniels> it probably doesn't close down the
socket, but you get the data anyway.
[10/20/2004 9:11 AM] <alek> maybe doPost can examine handler chain
step-wise and if any step delcares that no response will be sent (such
as for one-way messaging) then 202 can be sent and chain processing can
continue?
[10/20/2004 9:12 AM] <sanjiva> chathura: the servlet stuff comes in for
a request-response type pattern only ... in the case of eventing its
just sending out multiple messsages only right?
[10/20/2004 9:12 AM] <gdaniels> alek: not sure you need to examine the
whole chain for that, just determine the MEP
[10/20/2004 9:12 AM] <sanjiva> I mean the implementation of ws-eventing
is going to use a sender multiple times - it will not involve a servlet
at all
[10/20/2004 9:13 AM] <chathura> sir i was wondering whether we can burn
that part into the transport sender itself
[10/20/2004 9:13 AM] <chathura> after all it ll be the same msg right
[10/20/2004 9:13 AM] <gdaniels> burn the idea of sending to multiple
destinations into the sender itself?
[10/20/2004 9:14 AM] <gdaniels> You certainly could write a sender like
that, but I don't think we need to do anything architecturally to
support it.
[10/20/2004 9:14 AM] <chathura> meaning if the eventing requires sending
same msg to 10 listenenrs it ll be a single out but our transport sender
will will send it out to all
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[10/20/2004 9:15 AM] <gdaniels> but it might need to be encrypted
differently for each listener
[10/20/2004 9:15 AM] -->| FR^2 (~FRQuadrat@62.225.183.6) has joined
#apache-axis
[10/20/2004 9:15 AM] <gdaniels> so you really need to call the whole
outgoing chain for each message to enable that sort of thing
[10/20/2004 9:16 AM] <chathura> ohh ok
[10/20/2004 9:16 AM] <sanjiva> ah ok .. in some sense a multiplexing
sender instead of a point-to-point sender. interesting ..
[10/20/2004 9:16 AM] <gdaniels> should be cheap in most cases
[10/20/2004 9:16 AM] <chathura> :)
[10/20/2004 9:17 AM] <alek> well that may got more complicate with WSRM
as sender may need to retry sending so separate scheduler (or thread) is
needed
[10/20/2004 9:17 AM] <sanjiva> but we definitely don't need the sender
to implement ws-rm .. that can be layered on top
[10/20/2004 9:17 AM] <sanjiva> never mind that's what you said :)
[10/20/2004 9:18 AM] <gdaniels> OK, shall we wrap it up for today?
Everyone go look at everyone else's code. :)
[10/20/2004 9:19 AM] <chathura> think i need to go now today is our
graduation ball at the university
[10/20/2004 9:19 AM] <chathura> ok
[10/20/2004 9:19 AM] <gdaniels> I'm psyched to play with the OM protos!
[10/20/2004 9:19 AM] <sanjiva> sounds good :)
[10/20/2004 9:19 AM] <sanjiva> congrats on the ball guys! have a ball! ;-)
[10/20/2004 9:19 AM] <gdaniels> chathura: have fun!
[10/20/2004 9:19 AM] <gdaniels> hehehe
[10/20/2004 9:19 AM] <sanjiva> bye ..
[10/20/2004 9:19 AM] <chathura> thanx
[10/20/2004 9:19 AM] <chathura> bye
[10/20/2004 9:19 AM] <--| chathura has left #apache-axis
[10/20/2004 9:19 AM] <--| smeder has left #apache-axis
[10/20/2004 9:19 AM] <gdaniels> bye4now folks... see you all next week
[10/20/2004 9:19 AM] <gdaniels> I'll send the log
[10/20/2004 9:19 AM] <Ias> Bye+
[10/20/2004 9:20 AM] <alek> bye
[10/20/2004 9:20 AM] <alek> i will send log too
--
The best way to predict the future is to invent it - Alan Kay
RE: [Axis2] Chat log 2004-10-20
Posted by Eran Chinthaka <ch...@opensource.lk>.
Dims,
Can u setup the Jira for Axis 2. We decided to have a separate Jira project
for Axis 2.
Whenever you have time, please set it up
Thankx and regards,
________________________________
Eran Chinthaka
Lanka Software Foundation
> -----Original Message-----
> From: Aleksander Slominski [mailto:aslom@cs.indiana.edu]
> Sent: Wednesday, October 20, 2004 8:34 PM
> To: axis-dev@ws.apache.org
> Subject: Re: [Axis2] Chat log 2004-10-20
>
> i like inlined logs (no attachments) so here is another version with
> summary.
>
> BTW: in future chats we should be choosing official log poster ...
>
> summary: today discussion was about WSDL processing and WOM (WSDL
> Object Model):
> http://wiki.apache.org/ws/FrontPage/Architecture/WSDL
> and in particular about API, data binding issues, relation to WSDL4J,
> use of XMLBeans,
> metadata (get/setProperty).
>
> we have also talked about transport and HTTP 202 support in
> servlets and phased handlers and how they are supposed to work.
>
> please make sure to visit and add topics to agenda for next week chat at:
> http://wiki.apache.org/ws/ChatAgenda/20041027
> http://wiki.apache.org/ws/ChatAgenda
>
> thanks,
>
> alek
>
> [10/20/2004 8:00 AM] <Ias> Hi Glen
> [10/20/2004 8:01 AM] =-= YOU are now known as alek
> [10/20/2004 8:01 AM] <gdaniels> Hi Alek
> [10/20/2004 8:01 AM] <Ajith1030> Hi all
> [10/20/2004 8:02 AM] <Ias> Hi Alek,
> [10/20/2004 8:02 AM] <gdaniels> Morning (evening, whatever) Ajith
> [10/20/2004 8:02 AM] <Ias> Hi Ajith
> [10/20/2004 8:02 AM] -->| Srinath (~Srinath@220.247.251.118) has joined
> #apache-axis
> [10/20/2004 8:03 AM] <Ias> Hi Srinath
> [10/20/2004 8:03 AM] <gdaniels> It's that time, folks.
> [10/20/2004 8:03 AM] <alek> Hello
> [10/20/2004 8:03 AM] <Srinath> hi all
> [10/20/2004 8:03 AM] <Srinath> hi glen :)
> [10/20/2004 8:04 AM] -->| Chinthaka_away (~chinthaka@220.247.231.132)
> has joined #apache-axis
> [10/20/2004 8:04 AM] <gdaniels> Hi Srinath!
> [10/20/2004 8:04 AM] =-= Chinthaka_away is now known as Chinthaka
> [10/20/2004 8:04 AM] <Chinthaka> hi all
> [10/20/2004 8:04 AM] -->| farhaan (~Miranda@220.247.251.118) has joined
> #apache-axis
> [10/20/2004 8:04 AM] <Ias> Hi Chinthaka
> [10/20/2004 8:04 AM] <gdaniels> So... WSDL processing was apparently
> first on today's agenda?
> [10/20/2004 8:04 AM] <Srinath> :)
> [10/20/2004 8:05 AM] -->| dasarath (~Miranda@220.247.251.118) has joined
> #apache-axis
> [10/20/2004 8:05 AM] <Srinath> may be we start with second chatura wsdl
> man is coming and any second
> [10/20/2004 8:05 AM] <Ajith1030>
> http://wiki.apache.org/ws/ChatAgenda/20041020
> [10/20/2004 8:06 AM] <Srinath> shall I bring up handlin gbugs first
> [10/20/2004 8:06 AM] <Srinath> jira for axis2
> [10/20/2004 8:06 AM] <Chinthaka> thats good Srianth
> [10/20/2004 8:06 AM] <Srinath> gbug=bug
> [10/20/2004 8:06 AM] <Chinthaka> Srinath :)
> [10/20/2004 8:06 AM] <gdaniels> yes, should be pretty easy to set up
> [10/20/2004 8:06 AM] <farhaan> okay, so what do you propose? I would
> prefer to have a a new jIRA project created
> [10/20/2004 8:06 AM] <gdaniels> What did you want to discuss about it?
> [10/20/2004 8:06 AM] <gdaniels> farhaan: yup
> [10/20/2004 8:06 AM] <Srinath> should we set up a jira project to axis2
> [10/20/2004 8:07 AM] <Srinath> or do it inside axis jira
> [10/20/2004 8:07 AM] <gdaniels> +1 new
> [10/20/2004 8:07 AM] <Srinath> +1 new
> [10/20/2004 8:08 AM] <Srinath> ok let us catch dims for that i belive
> [10/20/2004 8:08 AM] <Ajith1030> I woluld also say new
> [10/20/2004 8:08 AM] <gdaniels> OK
> [10/20/2004 8:08 AM] <alek> +1 new
> [10/20/2004 8:09 AM] <Srinath> next the OM how to proceed from where we
> are
> [10/20/2004 8:09 AM] <Chinthaka> wait
> [10/20/2004 8:09 AM] <Chinthaka> shall we discuss this wsdl first
> [10/20/2004 8:10 AM] <Chinthaka> its accrued from last chat :)
> [10/20/2004 8:10 AM] -->| chathura (~chathura@220.247.231.132) has
> joined #apache-axis
> [10/20/2004 8:10 AM] <gdaniels> We're waiting for Chathura
> [10/20/2004 8:10 AM] <gdaniels> ah
> [10/20/2004 8:10 AM] <Chinthaka> he came just now
> [10/20/2004 8:10 AM] <gdaniels> speak of the devil
> [10/20/2004 8:10 AM] <chathura> hi sorry guy
> [10/20/2004 8:10 AM] <Srinath> Chat is in :)
> [10/20/2004 8:10 AM] <Chinthaka> :D
> [10/20/2004 8:10 AM] <gdaniels> no problemo
> [10/20/2004 8:10 AM] <Srinath> then to wsdli belive
> [10/20/2004 8:10 AM] <chathura> +1:)
> [10/20/2004 8:10 AM] <gdaniels> So OK, WSDL first then OM
> [10/20/2004 8:11 AM] <Ajith1030> yeah Chathura : how is your progress
> [10/20/2004 8:11 AM] <chathura> ok will tell you what i have in mind
> [10/20/2004 8:11 AM] <chathura> ok i have a prototype impl of a possible
> WOM
> [10/20/2004 8:11 AM] <Chinthaka> all of us are staring at him and he is
> bit nervous :)
> [10/20/2004 8:11 AM] <chathura> WOM = WSDL object Model
> [10/20/2004 8:12 AM] <chathura>
> http://wiki.apache.org/ws/FrontPage/Architecture/WSDL
> [10/20/2004 8:12 AM] <chathura> its the architecture i have in mind
> which is pretty abstract(of course)
> [10/20/2004 8:13 AM] <chathura> THis WOM of mine will be based on the
> WSDL 2.0 component model
> [10/20/2004 8:14 AM] <gdaniels> Are we expecting the single WOM model to
> deal with both WSDL 2.0 and 1.1?
> [10/20/2004 8:14 AM] <chathura> but there are sufficient provisions that
> we can keep the
> [10/20/2004 8:14 AM] <chathura> wsdl 1.1:)
> [10/20/2004 8:15 AM] -->| Srinath_ (~Srinath@220.247.230.166) has joined
> #apache-axis
> [10/20/2004 8:15 AM] <Srinath_> hi are you seening this
> [10/20/2004 8:15 AM] <Chinthaka> yeah, y not :)
> [10/20/2004 8:15 AM] <Chinthaka> seems you guys having some prob
> [10/20/2004 8:15 AM] <gdaniels> I notice you're storing things in the
> current WOM proto as LinkedLists... wouldn't Maps make more sense,
> indexed by QNames/NCNames as appropriate?
> [10/20/2004 8:16 AM] <Srinath_> i think the net goes down and come back :D
> [10/20/2004 8:16 AM] <Srinath_> :(:(
> [10/20/2004 8:16 AM] <gdaniels> Srinath: yes, we see your clone :)
> [10/20/2004 8:16 AM] <Chinthaka> :)
> [10/20/2004 8:16 AM] <Srinath_> :D
> [10/20/2004 8:16 AM] -->| Ajith (~Miranda@220.247.230.166) has joined
> #apache-axis
> [10/20/2004 8:17 AM] <Srinath_> ajith can you address the glen Q about OM?
> [10/20/2004 8:17 AM] <chathura> glen:sounds good
> [10/20/2004 8:17 AM] <Ajith> sorry guys
> [10/20/2004 8:17 AM] <Ajith> what was the question??
> [10/20/2004 8:17 AM] <Chinthaka> Did Glen asked anything abt OM ?
> [10/20/2004 8:17 AM] <Ajith> I missed a whole lot
> [10/20/2004 8:18 AM] <gdaniels> <gdaniels> I notice you're storing
> things in the current WOM proto as LinkedLists... wouldn't Maps make
> more sense, indexed by QNames/NCNames as appropriate?
> [10/20/2004 8:18 AM] -->| dasarath1318 (~Miranda@220.247.230.166) has
> joined #apache-axis
> [10/20/2004 8:18 AM] <gdaniels> I think that was for Chathura, though -
> he wrote the current WOM, yes?
> [10/20/2004 8:18 AM] <chathura> well one more thig that i forgot to
> mension
> [10/20/2004 8:18 AM] <Srinath_> sorry it is WOM :)
> [10/20/2004 8:18 AM] <chathura> glen : didnt get you :(
> [10/20/2004 8:19 AM] <gdaniels> In WSDLDefinitions.java, for instance -
> you have the interfaces stored in a LinkedList.
> [10/20/2004 8:20 AM] <chathura> yes yes
> [10/20/2004 8:20 AM] <chathura> the thing i wanted to tell you was
> [10/20/2004 8:20 AM] <chathura> the need for external xml binding
> mechanism
> [10/20/2004 8:20 AM] <gdaniels> i.e. an external reader/writer?
> [10/20/2004 8:20 AM] <chathura> more or less the direcion is toward xml
> beans i guess
> [10/20/2004 8:21 AM] -->| farhaan5843 (~Miranda@220.247.223.8) has
> joined #apache-axis
> [10/20/2004 8:21 AM] <chathura> no i was talking about the schema
> parsing and the data representation of the WOM
> [10/20/2004 8:22 AM] <chathura> glen : yes your one plus and the data
> representation of the WOM
> [10/20/2004 8:22 AM] <gdaniels> ok, are you suggesting using XMLBeans on
> the WSDL schema to generate the classes?
> [10/20/2004 8:22 AM] <Ias> Actually Beehive WSM does that.
> [10/20/2004 8:23 AM] <chathura> think the Ajith is having some problems
> with the chat
> [10/20/2004 8:23 AM] <gdaniels> hm. I would think that would tie it too
> closely to a particular version....
> [10/20/2004 8:23 AM] <Ias> A similar case happened to EWS.
> [10/20/2004 8:24 AM] <Ias> Once we used JAXB, and Geronimo folks wanted
> us to change to XMLBeans.
> [10/20/2004 8:24 AM] -->| Ajith_rana (~Miranda@220.247.223.8) has joined
> #apache-axis
> [10/20/2004 8:24 AM] <Ajith_rana> guys we are having probs here at UOC
> [10/20/2004 8:24 AM] <chathura> i think the code gen part should be
> clearly seperated from this WOM of mine
> [10/20/2004 8:24 AM] <Ajith_rana> so our connection seems to break always
> [10/20/2004 8:25 AM] <Ias> Now it seems common that we need to make some
> abstract layer for supporting various binding solutions.
> [10/20/2004 8:25 AM] <gdaniels> OK, so you're really suggesting using
> the codegen to read and write the XML? That means that you'll have to
> write/read the XMLBeans objects to/from the WOM objects...
> [10/20/2004 8:25 AM] <chathura> so glen the code generation will be
> based on the WOM inside of which we may use xml beans and it will
> eventually help us
> [10/20/2004 8:26 AM] -->| Srinath__ (~Srinath@220.247.223.8) has joined
> #apache-axis
> [10/20/2004 8:26 AM] <gdaniels> I'm not sure there's a big enough payoff
> there to make XMLBeans worth it over a simpler solution, but I'll hold
> judgement until I see it.
> [10/20/2004 8:26 AM] <Srinath__> well am keep cloning :(
> [10/20/2004 8:26 AM] <gdaniels> I'm not sure there's NOT a big enough
> payoff either. :)
> [10/20/2004 8:27 AM] <gdaniels> If we have 10 Srinaths, we'll get this
> thing done a lot faster!
> [10/20/2004 8:27 AM] <Srinath__> oh :D
> [10/20/2004 8:27 AM] <Ias> :-)
> [10/20/2004 8:27 AM] <Ajith_rana> :D
> [10/20/2004 8:28 AM] <chathura> glen:i didnt get what you really mean
> [10/20/2004 8:28 AM] <alek> :-)
> [10/20/2004 8:28 AM] <chathura> we ll pretty much depend on the xml
> beans to d the schema parsing
> [10/20/2004 8:28 AM] <chathura> we need a schema parser anyway
> [10/20/2004 8:28 AM] <alek> so WOM will have one common API and support
> both WSDL2 and WSDL1.1?
>
> [10/20/2004 8:29 AM] <gdaniels> chathura: I'm saying that I'm a little
> concerned that the XMLBeans model generated from WSDL will duplicate an
> awful lot of what's going to be in the abstract WOM, and that it might
> be faster/easier to have a specific reader/writer class that does
> WOM<->XML directly.
> [10/20/2004 8:29 AM] <Srinath__> we got to decide what to use 4 xml
> schmema interface + parsing
> [10/20/2004 8:29 AM] <Ajith_rana> yeah we can the schema support from XB!
> [10/20/2004 8:29 AM] |<-- Srinath has left irc.freenode.net (Read error:
> 113 (No route to host))
> [10/20/2004 8:29 AM] <chathura> alek: yes
> [10/20/2004 8:30 AM] |<-- Ajith1030 has left irc.freenode.net (Read
> error: 113 (No route to host))
> [10/20/2004 8:30 AM] |<-- dasarath has left irc.freenode.net (Read
> error: 113 (No route to host))
> [10/20/2004 8:30 AM] |<-- farhaan has left irc.freenode.net (Read error:
> 113 (No route to host))
> [10/20/2004 8:30 AM] <chathura> glen: my guess is that would lead us to
> the place we are at in axis 1.1
> [10/20/2004 8:30 AM] <gdaniels> We wanted to have pluggable data binding
> frameworks, right? If that's the case then we want to think about what
> we need from the abstract part...
> [10/20/2004 8:31 AM] <chathura> i agree
> [10/20/2004 8:31 AM] |<-- FR^2 has left irc.freenode.net (Read error:
> 110 (Connection timed out))
> [10/20/2004 8:31 AM] <gdaniels> chathura: In Axis 1.1 we use WSDL4J
> [10/20/2004 8:32 AM] <gdaniels> WSDL4J does the WSDL writing/reading for
> us
> [10/20/2004 8:32 AM] <chathura> and we do our own schema parsing
> [10/20/2004 8:32 AM] <chathura> yah
> [10/20/2004 8:32 AM] <alek> glen: by pluggable do you mean that WSDL
> code generator can support many XML<->Java classes mappings?
> [10/20/2004 8:32 AM] <Ias> What's going on with WSDL4J 2?
> [10/20/2004 8:32 AM] <gdaniels> Ias: Nothing yet
> [10/20/2004 8:32 AM] -->| FR^2
> (~FRQuadrat@pD956EA40.dip0.t-ipconnect.de) has joined #apache-axis
> [10/20/2004 8:32 AM] <Ias> Glen: then when?
> [10/20/2004 8:32 AM] <gdaniels> Ias: We discussed contributing our
> version to JCP when we were in Sri Lanka...
> [10/20/2004 8:33 AM] <Ias> Glen: JCP? not Apache?
> [10/20/2004 8:33 AM] <gdaniels> alek: Yes, but probably not
> mix-and-match, just one at a time.
> [10/20/2004 8:33 AM] <gdaniels> Ias: "our" == Apache's
> [10/20/2004 8:33 AM] <chathura> glen: do you not think that schema
> parsing is a good reason for us to think of pluggable data binding
> [10/20/2004 8:34 AM] -->| dasarath (~Miranda@220.247.230.183) has joined
> #apache-axis
> [10/20/2004 8:34 AM] <gdaniels> chathura: Oh - you're talking about
> XMLBeans for parsing the schemas
> [10/20/2004 8:34 AM] <gdaniels> INSIDE the WSDL
> [10/20/2004 8:34 AM] <gdaniels> not the schema for WSDL itself
> [10/20/2004 8:34 AM] <chathura> not really
> [10/20/2004 8:34 AM] <gdaniels> I misunderstood, I think
> [10/20/2004 8:34 AM] <chathura> its like this
> [10/20/2004 8:35 AM] <Ias> Glen: I see. What I remember about that is
> WSDL4J 2 code base will come from IBM. Therefore, it is not ready yet.
> [10/20/2004 8:35 AM] <chathura> xml beans (or the data binding ) will be
> used for two things i belive
> [10/20/2004 8:35 AM] <gdaniels> Ias: No, WSDL4J2 code base isn't really
> being worked on yet IIRC. We suggested contributing our thing as the
> basis for WSDL4J2 work when we're done.
> [10/20/2004 8:36 AM] <gdaniels> I might be remembering wrong, though.
> [10/20/2004 8:36 AM] <chathura> one is to parse the schema component
> that is embedded in the WSDL itself
> [10/20/2004 8:36 AM] <chathura> THis will go into the WSDLOM Builder
> inthe diagram in http://wiki.apache.org/ws/FrontPage/Architecture/WSDL
> [10/20/2004 8:36 AM] <gdaniels> chathura: +1
> [10/20/2004 8:36 AM] <chathura> :)
> [10/20/2004 8:37 AM] <Ias> +1 from me too.
> [10/20/2004 8:37 AM] |<-- Srinath_ has left irc.freenode.net (Read
> error: 113 (No route to host))
> [10/20/2004 8:37 AM] <chathura> that was the first one by the way:)
> [10/20/2004 8:37 AM] <gdaniels> chathura: and thing number two?
> [10/20/2004 8:37 AM] -->| Srinath (~Srinath@220.247.247.178) has joined
> #apache-axis
> [10/20/2004 8:37 AM] <Ias> Srinath comes and goes :-)
> [10/20/2004 8:37 AM] <Srinath> :(
> [10/20/2004 8:37 AM] <Srinath> at least am keep cloning
> [10/20/2004 8:38 AM] <Srinath> :D
> [10/20/2004 8:38 AM] <chathura> No 2 is that we will use the xml beans
> object model to represent the schema component inside the WOM
> [10/20/2004 8:38 AM] <Chinthaka> :)
> [10/20/2004 8:38 AM] |<-- Ajith has left irc.freenode.net (Read error:
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> [10/20/2004 8:38 AM] <chathura> its not in da code as yet
> [10/20/2004 8:39 AM] |<-- dasarath1318 has left irc.freenode.net (Read
> error: 113 (No route to host))
> [10/20/2004 8:40 AM] <gdaniels> OK
> [10/20/2004 8:40 AM] <chathura> so WOM will have the wsdl component
> model plus references to a object model provided to us by a data binding
> tool
> [10/20/2004 8:40 AM] <gdaniels> sounds good
> [10/20/2004 8:40 AM] <chathura> :)
> [10/20/2004 8:40 AM] <gdaniels> WOM interfaces need to make it easy to
> find components from various places by name
> [10/20/2004 8:41 AM] <gdaniels> WOM also needs to be able to hang
> arbitrary data off each component
> [10/20/2004 8:41 AM] <chathura> glen: i agree with you we ll adopt a
> better serch mechanism
> [10/20/2004 8:41 AM] <gdaniels> (so we can attach handler chains, etc)
> [10/20/2004 8:41 AM] <chathura> explain a bit more pls
> [10/20/2004 8:42 AM] <gdaniels> each component should have a
> getProperty/setProperty
> [10/20/2004 8:42 AM] <gdaniels> that lets us attach handler chains to
> the Input/Output WSDL objects, as discussed in SL
> [10/20/2004 8:42 AM] <gdaniels> (operation/service too)
> [10/20/2004 8:42 AM] <gdaniels> plus attach any other metadata we might
> need
> [10/20/2004 8:43 AM] <chathura> so there will be some thing like a
> ComponentContext
> [10/20/2004 8:43 AM] <chathura> ?
> [10/20/2004 8:43 AM] <gdaniels> more like a WSDLComponent base class
> [10/20/2004 8:44 AM] <gdaniels> which implements the property-storing
> stuff
> [10/20/2004 8:45 AM] <alek> what is Property? named Object?
> [10/20/2004 8:45 AM] <gdaniels> right
> [10/20/2004 8:45 AM] <chathura> i was thinking some think like
> MessageContext like thing per component yah the impl would converge us
> to what you said
> [10/20/2004 8:45 AM] -->| sanjiva (~sanjiva@64.128.20.74) has joined
> #apache-axis
> [10/20/2004 8:45 AM] <gdaniels> Chain chain =
> (Chain)wsdlOperation.getProperty("axis.handlerChain")
> [10/20/2004 8:46 AM] <sanjiva> hi Guys
> [10/20/2004 8:46 AM] <sanjiva> sorry I'm rather late ..
> [10/20/2004 8:46 AM] <gdaniels> yo Sanjiva
> [10/20/2004 8:46 AM] <chathura> hi sir
> [10/20/2004 8:46 AM] <gdaniels> no worries, but we assigned you a whole
> lot of code to write while we were waiting. :D
> [10/20/2004 8:46 AM] <sanjiva> what's the topic today?
> [10/20/2004 8:46 AM] <sanjiva> ah cool :)
> [10/20/2004 8:46 AM] <Chinthaka> :)
> [10/20/2004 8:46 AM] <gdaniels> we're talking WSDL right now
> [10/20/2004 8:47 AM] <gdaniels> coming to a close on it for today, I think
> [10/20/2004 8:47 AM] <gdaniels> chathura's working on the object model,
> in early stages
> [10/20/2004 8:47 AM] <Ias> Hi Sanjiva
> [10/20/2004 8:47 AM] <alek> hi sanjiva
> [10/20/2004 8:47 AM] <gdaniels> we discussed the general idea of
> plugging in a databinding/schema framework to do the <types> work, but
> haven't talked specifics yet.
> [10/20/2004 8:47 AM] <gdaniels> XMLBeans first, pluggability after, I
> think.
> [10/20/2004 8:48 AM] <sanjiva> ok sounds good ... but we will have the
> option of exposing OM directly to the app if they want it so right?
> [10/20/2004 8:48 AM] <gdaniels> right
> [10/20/2004 8:48 AM] <sanjiva> I mean basically without any type mapping
> [10/20/2004 8:48 AM] <gdaniels> yes
> [10/20/2004 8:48 AM] <sanjiva> OK
> [10/20/2004 8:48 AM] <gdaniels> will we do schema validation in that case?
> [10/20/2004 8:49 AM] <sanjiva> good question .. not yet I guess but
> certainly going forward that would be a good thing to do
> [10/20/2004 8:49 AM] <gdaniels> +1 not yet, and also to aim for that later
> [10/20/2004 8:49 AM] <sanjiva> bit of a challenge to do schema
> validation while doing deferred tree building with a pull parser but not
> impossible for sure
> [10/20/2004 8:49 AM] |<-- Srinath__ has left irc.freenode.net (Read
> error: 242 (No route to host))
> [10/20/2004 8:50 AM] <Chinthaka> deferred tree building in WOM ??
> [10/20/2004 8:50 AM] <gdaniels> right - technically can't validate until
> the whole infoset is there, but you can do stepwise validation with
> faults happening whenever the bad elements are encountered...
> [10/20/2004 8:50 AM] <gdaniels> Chinthaka: no, OM
> [10/20/2004 8:50 AM] |<-- Ajith_rana has left irc.freenode.net (Read
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> [10/20/2004 8:50 AM] |<-- farhaan5843 has left irc.freenode.net (Read
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> [10/20/2004 8:50 AM] <gdaniels> OK, speaking of OM.... should we move on
> to that?
> [10/20/2004 8:51 AM] <Chinthaka> are we talking abt OM ...... ??????
> [10/20/2004 8:51 AM] <Chinthaka> or WOM .... ??? or both ??????
> [10/20/2004 8:51 AM] <gdaniels> Chinthaka: Yes, Sanjiva and I were
> talking about using OM directly instead of data binding when desired.
> [10/20/2004 8:52 AM] <alek> it seems there are soem connectivity problems
> [10/20/2004 8:52 AM] <sanjiva> Chinthaka: about givinmg the app
> programmer a choice of programming models: type mapped into a java type
> or as an XML infoset (aka OM)
> [10/20/2004 8:52 AM] <alek> maybe we can move OM to next week and rehash
> issues over mailing list?
> [10/20/2004 8:53 AM] <gdaniels> Sure, we can do that.
> [10/20/2004 8:53 AM] <gdaniels> Srinath, are you still there?
> [10/20/2004 8:53 AM] <Chinthaka> alek : thats good
> [10/20/2004 8:53 AM] <Chinthaka> its lightening here :(
> [10/20/2004 8:53 AM] <gdaniels> looks like no :(
> [10/20/2004 8:53 AM] <chathura> think the guys at uoc having problem
> [10/20/2004 8:53 AM] <sanjiva> you mean to say he got hit??
> [10/20/2004 8:54 AM] <sanjiva> ah ok ;-)
> [10/20/2004 8:54 AM] <chathura> ;)
> [10/20/2004 8:54 AM] <gdaniels> lightning == bad for the wires, not the
> people! :)
> [10/20/2004 8:54 AM] <gdaniels> So I checked in an engine prototype
> [10/20/2004 8:54 AM] -->| smeder
> (~smeder@c-67-167-52-95.client.comcast.net) has joined #apache-axis
> [10/20/2004 8:54 AM] <alek> unless you have really really really bad luckk
> [10/20/2004 8:54 AM] <Chinthaka> people are infront of things powered by
> wires ;)
> [10/20/2004 8:55 AM] <gdaniels> Will do some more work on it, but it
> shows some of the stuff we talked about in early form.
> [10/20/2004 8:55 AM] <gdaniels> Hi Sam
> [10/20/2004 8:55 AM] <Chinthaka> hi sam
> [10/20/2004 8:55 AM] <Ias> Hi Sam
> [10/20/2004 8:55 AM] <smeder> hi all
> [10/20/2004 8:55 AM] <chathura> HI SAM
> [10/20/2004 8:55 AM] <sanjiva> Glen: saw it .. I'll look at it too (have
> to look at srinath's code too)
> [10/20/2004 8:55 AM] <sanjiva> hi Sam!
> [10/20/2004 8:56 AM] <Chinthaka> a small question ... can some one tell
> me abt
> [10/20/2004 8:56 AM] <Chinthaka> what Phased handlers means ... for
> clarification
> [10/20/2004 8:56 AM] <gdaniels> the idea that there are well-defined
> "phases" with names that represent particular ordered parts of your
> handler chain
> [10/20/2004 8:56 AM] |<-- Srinath has left irc.freenode.net (Read error:
> 113 (No route to host))
> [10/20/2004 8:57 AM] <alek> hi Sam
> [10/20/2004 8:57 AM] <gdaniels> phases get used by Modules when they're
> deploying handlers.
> [10/20/2004 8:57 AM] |<-- dasarath has left irc.freenode.net (Read
> error: 113 (No route to host))
> [10/20/2004 8:57 AM] <gdaniels> So you can say stuff like "deploy this
> handler as the first one in the dispatch phase", etc
> [10/20/2004 8:57 AM] <Chinthaka> oki
> [10/20/2004 8:58 AM] <gdaniels> a Phase as I built it has pre and post
> conditions which get checked during execution
> [10/20/2004 8:58 AM] <alek> what would be typical phases? ike security,
> reliable messaging, ... ?
> [10/20/2004 8:58 AM] <gdaniels> alek: eventually, yes
> [10/20/2004 8:58 AM] <gdaniels> we'll start simple with just transport,
> global, dispatch....
> [10/20/2004 8:59 AM] <Chinthaka> did u see the protoype we created for
> Engine ?
> [10/20/2004 8:59 AM] <gdaniels> I've got it but haven't looked at it yet
> - plan to today
> [10/20/2004 9:00 AM] <chathura> i have looked at the transport sender
> thing
> [10/20/2004 9:01 AM] <chathura> few issues in my mind
> [10/20/2004 9:01 AM] <gdaniels> which transport sender thing?
> [10/20/2004 9:02 AM] <chathura> The transport sender thing that we
> talked about in the sumit
> [10/20/2004 9:02 AM] <chathura> the one who will od the transport
> realated stuff
> [10/20/2004 9:03 AM] <chathura> eg: sending 202 at the end of the in
> phase if necessary
> [10/20/2004 9:03 AM] <chathura> one who will be the last handler in the
> out
> [10/20/2004 9:04 AM] <chathura> basically the guy who will look up
> whether ther are addressing things to be clarified before sending the out
> [10/20/2004 9:04 AM] <gdaniels> I implemented that one of the ways we
> talked about, by having the servlet (HTTPListener) send the 202 if it
> gets control back but does not find a particular RESPONSE_SENT property
> in the MC
> [10/20/2004 9:05 AM] <chathura> yes yes thats what i ws talking
> [10/20/2004 9:05 AM] <gdaniels> So if someone used the HTTPResponder
> (the "sender") to send a response or a fault, the property gets set and
> the HTTPListener does nothing when it gets control back. Otherwise it
> sends a 202.
> [10/20/2004 9:06 AM] <chathura> so if i am to tell you my question
> [10/20/2004 9:06 AM] <gdaniels> The only problem with that approach is
> that the 202 gets sent AFTER all the processing has happened. It might
> also be nice to put in a way to have that happen earlier.
> [10/20/2004 9:07 AM] <chathura> yah in mind i thought this transport
> sender gets called the responder
> [10/20/2004 9:07 AM] <chathura> befor out after in
> [10/20/2004 9:07 AM] <sanjiva> glen: that would require another thread
> .. otherwise the servlet rules will be broken (?)
> [10/20/2004 9:07 AM] <gdaniels> sanjiva: no, I don't think so
> [10/20/2004 9:07 AM] <gdaniels> Anyone can write and flush the servlet
> response.
> [10/20/2004 9:08 AM] <gdaniels> We just need to know when to do it.
> [10/20/2004 9:08 AM] <sanjiva> hmmm .. even before the return from
> doPost()?
> [10/20/2004 9:09 AM] <gdaniels> There's some kind of "switch responders"
> hook that would perform activity like sending the 202 and flushing.
> [10/20/2004 9:09 AM] <gdaniels> Yes, I'm pretty sure.
> [10/20/2004 9:09 AM] <gdaniels> Not positive though.
> [10/20/2004 9:09 AM] <chathura> what will happen in cases like
> ws-eventing where the same message is sent out to many listeners
> [10/20/2004 9:09 AM] <chathura> two questions
> [10/20/2004 9:10 AM] <gdaniels> chathura: ? Not sure what you're getting
> at with eventing.
> [10/20/2004 9:10 AM] <sanjiva> so you mean if I do this in in doPost: {
> .. code to send reponse, flush; sleep (100000); return } then the client
> will receive the 200 OK response before the sleep expires?
> [10/20/2004 9:10 AM] <chathura> does the current addressing allow us to
> have many reply tos
> [10/20/2004 9:10 AM] <gdaniels> sanjiva: I think so, yes.
> [10/20/2004 9:10 AM] <gdaniels> it probably doesn't close down the
> socket, but you get the data anyway.
> [10/20/2004 9:11 AM] <alek> maybe doPost can examine handler chain
> step-wise and if any step delcares that no response will be sent (such
> as for one-way messaging) then 202 can be sent and chain processing can
> continue?
> [10/20/2004 9:12 AM] <sanjiva> chathura: the servlet stuff comes in for
> a request-response type pattern only ... in the case of eventing its
> just sending out multiple messsages only right?
> [10/20/2004 9:12 AM] <gdaniels> alek: not sure you need to examine the
> whole chain for that, just determine the MEP
> [10/20/2004 9:12 AM] <sanjiva> I mean the implementation of ws-eventing
> is going to use a sender multiple times - it will not involve a servlet
> at all
> [10/20/2004 9:13 AM] <chathura> sir i was wondering whether we can burn
> that part into the transport sender itself
> [10/20/2004 9:13 AM] <chathura> after all it ll be the same msg right
> [10/20/2004 9:13 AM] <gdaniels> burn the idea of sending to multiple
> destinations into the sender itself?
> [10/20/2004 9:14 AM] <gdaniels> You certainly could write a sender like
> that, but I don't think we need to do anything architecturally to
> support it.
> [10/20/2004 9:14 AM] <chathura> meaning if the eventing requires sending
> same msg to 10 listenenrs it ll be a single out but our transport sender
> will will send it out to all
> [10/20/2004 9:15 AM] |<-- FR^2 has left irc.freenode.net (Read error:
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> [10/20/2004 9:15 AM] <gdaniels> but it might need to be encrypted
> differently for each listener
> [10/20/2004 9:15 AM] -->| FR^2 (~FRQuadrat@62.225.183.6) has joined
> #apache-axis
> [10/20/2004 9:15 AM] <gdaniels> so you really need to call the whole
> outgoing chain for each message to enable that sort of thing
> [10/20/2004 9:16 AM] <chathura> ohh ok
> [10/20/2004 9:16 AM] <sanjiva> ah ok .. in some sense a multiplexing
> sender instead of a point-to-point sender. interesting ..
> [10/20/2004 9:16 AM] <gdaniels> should be cheap in most cases
> [10/20/2004 9:16 AM] <chathura> :)
> [10/20/2004 9:17 AM] <alek> well that may got more complicate with WSRM
> as sender may need to retry sending so separate scheduler (or thread) is
> needed
> [10/20/2004 9:17 AM] <sanjiva> but we definitely don't need the sender
> to implement ws-rm .. that can be layered on top
> [10/20/2004 9:17 AM] <sanjiva> never mind that's what you said :)
> [10/20/2004 9:18 AM] <gdaniels> OK, shall we wrap it up for today?
> Everyone go look at everyone else's code. :)
> [10/20/2004 9:19 AM] <chathura> think i need to go now today is our
> graduation ball at the university
> [10/20/2004 9:19 AM] <chathura> ok
> [10/20/2004 9:19 AM] <gdaniels> I'm psyched to play with the OM protos!
> [10/20/2004 9:19 AM] <sanjiva> sounds good :)
> [10/20/2004 9:19 AM] <sanjiva> congrats on the ball guys! have a ball! ;-)
> [10/20/2004 9:19 AM] <gdaniels> chathura: have fun!
> [10/20/2004 9:19 AM] <gdaniels> hehehe
> [10/20/2004 9:19 AM] <sanjiva> bye ..
> [10/20/2004 9:19 AM] <chathura> thanx
> [10/20/2004 9:19 AM] <chathura> bye
> [10/20/2004 9:19 AM] <--| chathura has left #apache-axis
> [10/20/2004 9:19 AM] <--| smeder has left #apache-axis
> [10/20/2004 9:19 AM] <gdaniels> bye4now folks... see you all next week
> [10/20/2004 9:19 AM] <gdaniels> I'll send the log
> [10/20/2004 9:19 AM] <Ias> Bye+
> [10/20/2004 9:20 AM] <alek> bye
> [10/20/2004 9:20 AM] <alek> i will send log too
>
> --
> The best way to predict the future is to invent it - Alan Kay
>