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Posted to dev@tuscany.apache.org by Nirmal Fernando <ni...@gmail.com> on 2011/06/13 09:42:42 UTC
Possible ways to specify target service for a reference
Hi All,
As you know, I'm in the process of creating composite diagram automatically
for a given composite XML.
I have a question, where I need your input.
According to the spec there are many ways that one could specify a target
service for a reference [1].
I am wondering whether I've to consider all of those options?
Thanks.
PS: Herewith I've attached a sample image generated by the tool which is
still not fully complete! I am
using Apache Batiks to create SVG document, and I am implementing my own
layout algorithm. If you
have any comments please do fire them. Source code is available at [2].
[1]
http://docs.oasis-open.org/opencsa/sca-assembly/sca-assembly-1.1-spec-cd03.html#_Toc225073583
[2] https://svn.apache.org/repos/asf/tuscany/collaboration/GSoC-2011-Nirmal/
--
Best Regards,
Nirmal
C.S.Nirmal J. Fernando
Department of Computer Science & Engineering,
Faculty of Engineering,
University of Moratuwa,
Sri Lanka.
Blog: http://nirmalfdo.blogspot.com/
Re: Possible ways to specify target service for a reference
Posted by Nirmal Fernando <ni...@gmail.com>.
On Tue, Jun 14, 2011 at 4:33 AM, Jean-Sebastien Delfino <
jsdelfino@apache.org> wrote:
> On Mon, Jun 13, 2011 at 9:50 AM, Nirmal Fernando <ni...@gmail.com>
> wrote:
> > Hi Mike,
> >
> > On Mon, Jun 13, 2011 at 10:15 PM, Mike Edwards
> > <mi...@gmail.com> wrote:
> >>
> >> On 13/06/2011 08:42, Nirmal Fernando wrote:
> >>>
> >>> Hi All,
> >>>
> >>> As you know, I'm in the process of creating composite diagram
> >>> automatically for a given composite XML.
> >>> I have a question, where I need your input.
> >>>
> >>> According to the spec there are many ways that one could specify a
> target
> >>> service for a reference [1].
> >>> I am wondering whether I've to consider all of those options?
> >>>
> >>> Thanks.
> >>>
> >>> PS: Herewith I've attached a sample image generated by the tool which
> is
> >>> still not fully complete! I am
> >>> using Apache Batiks to create SVG document, and I am implementing my
> own
> >>> layout algorithm. If you
> >>> have any comments please do fire them. Source code is available at [2].
> >>>
> >>> [1]
> >>>
> http://docs.oasis-open.org/opencsa/sca-assembly/sca-assembly-1.1-spec-cd03.html#_Toc225073583
> >>> [2]
> >>>
> https://svn.apache.org/repos/asf/tuscany/collaboration/GSoC-2011-Nirmal/
> >>> --
> >>> Best Regards,
> >>> Nirmal
> >>>
> >> Nirmal,
> >>
> >> Can you help us a bit please? Which forms of reference specification
> are
> >> you dealing with at the moment?
> >>
> >> The basic ones are:
> >>
> >> o @target parameter
> >> o @autowire
> >> o promotion (and thus targeting at a higher level)
> >> o <wire/> element(s)
> >> o binding with a specified target URI
> >
> > Currently only @target attribute is supported. I wanted to know what
> other
> > forms are exactly needed!
> >
> > In the spec there are 7.
> >
> > 1. Through a value specified in the @target attribute of the reference
> > element
> >
> > 2. Through a target URI specified in the @uri attribute of a binding
> > element which is a child of the reference element
> >
> > 3. Through the setting of one or more values for binding-specific
> > attributes and/or child elements of a binding element that is a child of
> the
> > reference element
> >
> > 4. Through the specification of @autowire="true" for the reference
> (or
> > through inheritance of that value from the component or composite
> > containing the reference)
> >
> > 5. Through the specification of @wiredByImpl="true" for the reference
> >
> > 6. Through the promotion of a component reference by a composite
> > reference of the composite containing the component (the target service
> is
> > then identified by the configuration of the composite reference)
> >
> > 7. Through the presence of a <wire/> element which has the reference
> > specified in its @source attribute.
> >>
> >> - I leave out @wiredByImpl since there is no implementation type that
> does
> >> this at the moment
> >>
> >>
> >> Yours, Mike.
> >
> >
> >
> > --
> > Best Regards,
> > Nirmal
> >
>
> I would list, in decreasing priority order:
>
> - @target
>
> - <wire>
>
> - promotion
>
> Great! I'll provide support for the above 3.
Thanks.
> - autowire, which you could leave out for now, as (1) I've not seen it
> used a lot and (2) if you didn't want to explicitly declare the wires
> explicitly, but on the other hand you really want to see them in a
> diagram... I could argue that you don't really know what you want :)
>
> - binding URIs, I'd leave that one out as configuring binding endpoint
> addresses is not really wiring.
>
> Thoughts?
> --
> Jean-Sebastien
>
--
Best Regards,
Nirmal
C.S.Nirmal J. Fernando
Department of Computer Science & Engineering,
Faculty of Engineering,
University of Moratuwa,
Sri Lanka.
Blog: http://nirmalfdo.blogspot.com/
Re: Possible ways to specify target service for a reference
Posted by Jean-Sebastien Delfino <js...@apache.org>.
On Mon, Jun 13, 2011 at 9:50 AM, Nirmal Fernando <ni...@gmail.com> wrote:
> Hi Mike,
>
> On Mon, Jun 13, 2011 at 10:15 PM, Mike Edwards
> <mi...@gmail.com> wrote:
>>
>> On 13/06/2011 08:42, Nirmal Fernando wrote:
>>>
>>> Hi All,
>>>
>>> As you know, I'm in the process of creating composite diagram
>>> automatically for a given composite XML.
>>> I have a question, where I need your input.
>>>
>>> According to the spec there are many ways that one could specify a target
>>> service for a reference [1].
>>> I am wondering whether I've to consider all of those options?
>>>
>>> Thanks.
>>>
>>> PS: Herewith I've attached a sample image generated by the tool which is
>>> still not fully complete! I am
>>> using Apache Batiks to create SVG document, and I am implementing my own
>>> layout algorithm. If you
>>> have any comments please do fire them. Source code is available at [2].
>>>
>>> [1]
>>> http://docs.oasis-open.org/opencsa/sca-assembly/sca-assembly-1.1-spec-cd03.html#_Toc225073583
>>> [2]
>>> https://svn.apache.org/repos/asf/tuscany/collaboration/GSoC-2011-Nirmal/
>>> --
>>> Best Regards,
>>> Nirmal
>>>
>> Nirmal,
>>
>> Can you help us a bit please? Which forms of reference specification are
>> you dealing with at the moment?
>>
>> The basic ones are:
>>
>> o @target parameter
>> o @autowire
>> o promotion (and thus targeting at a higher level)
>> o <wire/> element(s)
>> o binding with a specified target URI
>
> Currently only @target attribute is supported. I wanted to know what other
> forms are exactly needed!
>
> In the spec there are 7.
>
> 1. Through a value specified in the @target attribute of the reference
> element
>
> 2. Through a target URI specified in the @uri attribute of a binding
> element which is a child of the reference element
>
> 3. Through the setting of one or more values for binding-specific
> attributes and/or child elements of a binding element that is a child of the
> reference element
>
> 4. Through the specification of @autowire="true" for the reference (or
> through inheritance of that value from the component or composite
> containing the reference)
>
> 5. Through the specification of @wiredByImpl="true" for the reference
>
> 6. Through the promotion of a component reference by a composite
> reference of the composite containing the component (the target service is
> then identified by the configuration of the composite reference)
>
> 7. Through the presence of a <wire/> element which has the reference
> specified in its @source attribute.
>>
>> - I leave out @wiredByImpl since there is no implementation type that does
>> this at the moment
>>
>>
>> Yours, Mike.
>
>
>
> --
> Best Regards,
> Nirmal
>
I would list, in decreasing priority order:
- @target
- <wire>
- promotion
- autowire, which you could leave out for now, as (1) I've not seen it
used a lot and (2) if you didn't want to explicitly declare the wires
explicitly, but on the other hand you really want to see them in a
diagram... I could argue that you don't really know what you want :)
- binding URIs, I'd leave that one out as configuring binding endpoint
addresses is not really wiring.
Thoughts?
--
Jean-Sebastien
Re: Possible ways to specify target service for a reference
Posted by Nirmal Fernando <ni...@gmail.com>.
Hi Mike,
On Mon, Jun 13, 2011 at 10:15 PM, Mike Edwards <
mike.edwards.inglenook@gmail.com> wrote:
> On 13/06/2011 08:42, Nirmal Fernando wrote:
>
>> Hi All,
>>
>> As you know, I'm in the process of creating composite diagram
>> automatically for a given composite XML.
>> I have a question, where I need your input.
>>
>> According to the spec there are many ways that one could specify a target
>> service for a reference [1].
>> I am wondering whether I've to consider all of those options?
>>
>> Thanks.
>>
>> PS: Herewith I've attached a sample image generated by the tool which is
>> still not fully complete! I am
>> using Apache Batiks to create SVG document, and I am implementing my own
>> layout algorithm. If you
>> have any comments please do fire them. Source code is available at [2].
>>
>> [1]
>> http://docs.oasis-open.org/opencsa/sca-assembly/sca-assembly-1.1-spec-cd03.html#_Toc225073583
>> [2]
>> https://svn.apache.org/repos/asf/tuscany/collaboration/GSoC-2011-Nirmal/
>> --
>> Best Regards,
>> Nirmal
>>
>> Nirmal,
>
> Can you help us a bit please? Which forms of reference specification are
> you dealing with at the moment?
>
> The basic ones are:
>
> o @target parameter
> o @autowire
> o promotion (and thus targeting at a higher level)
> o <wire/> element(s)
> o binding with a specified target URI
>
Currently only @target attribute is supported. I wanted to know what other
forms are exactly needed!
In the spec there are 7.
1. Through a value specified in the @target attribute of the reference
element
2. Through a target URI specified in the @uri attribute of a binding
element which is a child of the reference element
3. Through the setting of one or more values for binding-specific
attributes and/or child elements of a binding element that is a child of the
reference element
4. Through the specification of @autowire="true" for the reference (or
through inheritance of that value from the component or composite
containing the reference)
5. Through the specification of @wiredByImpl="true" for the reference
6. Through the promotion of a component reference by a composite
reference of the composite containing the component (the target service is
then identified by the configuration of the composite reference)
7. Through the presence of a <wire/> element which has the reference
specified in its @source attribute.
> - I leave out @wiredByImpl since there is no implementation type that does
> this at the moment
>
>
> Yours, Mike.
>
--
Best Regards,
Nirmal
C.S.Nirmal J. Fernando
Department of Computer Science & Engineering,
Faculty of Engineering,
University of Moratuwa,
Sri Lanka.
Blog: http://nirmalfdo.blogspot.com/
Re: Possible ways to specify target service for a reference
Posted by Mike Edwards <mi...@gmail.com>.
On 13/06/2011 08:42, Nirmal Fernando wrote:
> Hi All,
>
> As you know, I'm in the process of creating composite diagram automatically for a given composite XML.
> I have a question, where I need your input.
>
> According to the spec there are many ways that one could specify a target service for a reference [1].
> I am wondering whether I've to consider all of those options?
>
> Thanks.
>
> PS: Herewith I've attached a sample image generated by the tool which is still not fully complete! I am
> using Apache Batiks to create SVG document, and I am implementing my own layout algorithm. If you
> have any comments please do fire them. Source code is available at [2].
>
> [1] http://docs.oasis-open.org/opencsa/sca-assembly/sca-assembly-1.1-spec-cd03.html#_Toc225073583
> [2] https://svn.apache.org/repos/asf/tuscany/collaboration/GSoC-2011-Nirmal/
> --
> Best Regards,
> Nirmal
>
Nirmal,
Can you help us a bit please? Which forms of reference specification are you dealing with at the
moment?
The basic ones are:
o @target parameter
o @autowire
o promotion (and thus targeting at a higher level)
o <wire/> element(s)
o binding with a specified target URI
- I leave out @wiredByImpl since there is no implementation type that does this at the moment
Yours, Mike.