Thread: RE: RE : RE : [Springframework-developer] DTD

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I'm for one tag for Collections and one tag for Maps

Regards,
Dmitriy.

-----Original Message-----
From: JP Pawlak [mailto:jp....@ti...]=20
Sent: Friday, May 30, 2003 8:40 AM
To: 'Isabelle Muszynski'; 'Rod Johnson'
Cc: spr...@li...
Subject: RE : RE : [Springframework-developer] DTD

Hi Isabelle,

If a Map could be a Collection, make sure that it would be so in Java.=20
Elements in a collection are single: an Object.
Elements in a Map are double: a key + an Object.

The structure cannot be the same as a Map element always needs a key =
and a
collection never.
I don't see a more generic solution as Rod's:
One tag for every kind of Collection including arrays which are not =
really
collections but have the same structure.
One tag for the maps.

The difference will be the presence of a key attribute or sub-element =
in
map-entries which will not exist in collection-entries.
In all cases, the XML will dictate between Maps and Collections by the =
use
of a key descriptor, even if we use the same envelopping tag.=20
We have not the choice.

Regards,
Jean-Pierre

> -----Message d'origine-----
> De : spr...@li...=20
> [mailto:spr...@li...]
>  De la part de Isabelle Muszynski
> Envoy=C3=A9 : vendredi 30 mai 2003 13:55
> =C3=80 : Rod Johnson
> Cc : spr...@li...
> Objet : Re: RE : [Springframework-developer] DTD
>=20
>=20
> Hi Rod,
>=20
> I think it all depencs what the point is. If we want the xml=20
> to dictate the data structure used to represent the bean,=20
> then yes, we need a map, list, array etc tag. If the point is=20
> for the xml to indicate a collection, then a single=20
> collection tag should be sufficient.
>=20
> Isabelle
>=20
> On Fri, May 30, 2003 at 11:36:03AM +0100, Rod Johnson wrote:
> > JP,
> >=20
> > I like this. It's an improvement. We could even support=20
> object keys by=20
> > having a <key> subelement that supports  a<value> or ref.=20
> But that's=20
> > in the future.
> >=20
> > Isabelle wrote "I like the collections idea, but not the different=20
> > keywords for it (map, collection). All the user has to know is that =

> > it's a collection, not how we implment it internally." (I=20
> don't think=20
> > you sent this to the list.) But aren't maps different to=20
> collections=20
> > or arrays (which we might also want to support eventually?)=20
> Two values=20
> > to manage, not just one?
> >=20
> > I'm inclined to support Maps like this in 0.8.
> >=20
> > Regards,
> > Rod
> >=20
> > ----- Original Message -----
> > From: "JP Pawlak" <jp....@ti...>
> > To: <rod...@in...>
> > Cc: <spr...@li...>
> > Sent: Friday, May 30, 2003 11:05 AM
> > Subject: RE : RE : [Springframework-developer] DTD
> >=20
> >=20
> > Rod,
> >=20
> > I'm inclined too to favor this.
> > But I see another improvement without having now the right solution =

> > about the map. In UrlHandlerMapping the data is in fact a bean=20
> > reference and this is not already checked.
> > In methodNameResolver in contrast, it's a simple text (method =
name).
> > Perhaps will we have an unique value/ref in the map entry=20
> body instead
> > of simple text?
> >=20
> > <property name=3D"mappings">
> >  <map>
> >    <entry key=3D"/welcome.html"><ref=20
> bean=3D"pagedListController"/></entry>
> >    <entry key=3D"/detail.html"><ref=20
> bean=3D"pagedListController"/></entry>
> >  </map>
> > </property>
> >=20
> > <property name=3D"mappings">
> >  <map>
> >    <entry key=3D"/welcome.html"><value>showMain</value></entry>
> >    <entry key=3D"/detail.html"><value>showDetail</value></entry>
> >  </map>
> > </property>
> >=20
> > Regards,
> > Jean-Pierre
> >=20
> >=20
> > > -----Message d'origine-----
> > > De : rod...@in...=20
> > > [mailto:rod...@in...]
> > > Envoy=C3=83=C2=A9 : vendredi 30 mai 2003 11:24
> > > =C3=83=E2=82=AC : JP Pawlak
> > > Cc : 'Rod Johnson';=20
> spr...@li...
> > > Objet : Re: RE : [Springframework-developer] DTD
> > >
> > >
> > > JP,
> > >
> > > I agree, formalizing map support would be an improvement. I'm not =

> > > sure we can do it for 0.8, though. Presently it's handled by a=20
> > > PropertyEditor.
> > >
> > > I wonder if it means we should introduce additional container=20
> > > elements <list> and <map> into our DTD? e.g.:
> > >
> > > <property name=3D"simple"><value>val</value></property>
> > > <property name=3D"mappings">
> > >  <map>
> > >    <entry key=3D"/welcome.html">pagedListController</entry>
> > >    <entry key=3D"/detail.html">pagedListController</entry>
> > >  </map>
> > > </property>
> > >
> > > <property name=3D"coll">
> > >   <collection>
> > >    <value>val</value>
> > >    <ref bean=3D"foo"/>
> > > </collection>
> > > </property>
> > >
> > > It's getting still more verbose, but it would be easier=20
> to parse and=20
> > > is more elegant. (Don't need to guess whether a value/ref=20
> is part of=20
> > > a collection.)
> > >
> > > I'm inclined to favour this. I could probably implement=20
> it by early=20
> > > next week (including maps).
> > >
> > > Regards,
> > > Rod
> > >
> >=20
> >=20
> >=20
> >=20
> >=20
> >=20
> >=20
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> >=20
> https://lists.sourceforge.net/lists/listinfo/s> =
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> >=20
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>=20
> --=20
> Isabelle Muszynski
> Software Engineer
> Zandweellaan 4
> 2660 Antwerpen
> Belgium
> Tel. 32-(0)3-830 18 54
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>=20
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