Re: [Springframework-rcp-dev] [Spring Desktop] ideas for the Desktop version

[Peter De B. <pet...@gm...>]

C

On Mon, Jul 7, 2008 at 8:26 PM, Thomas R. Corbin <tho...@gm...>
wrote:

> This all looks great!
>
> On Tuesday 01 July 2008, Jim Moore escreveu:
> > Heya, everyone.  Sorry for jumping into this discussion late.
> >
> > I prefer Claudio's distinctions for breaking out the modules.  In any
> case,
> > we need to make sure (like Spring) that there's never a circular
> dependency
> > between packages so that things can easily be broken apart later if
> needed.
> >
> > Spring 3.0 will also be dropping JDK1.4 support.  Going to Java 5 just
> > makes sense -- especially for a desktop app.  (In fact it's arguable that
> > we should go to Java 6 given all the desktop improvements they made.)
> >
> > There's a reason no Spring example shows injecting a Logger.  The nature
> of
> > logging and the logging libraries means there's no real benefit to doing
> > so.  Also, in general commons-logging is a bad thing (especially in
> > multiple classloader environments), which is why slf4j exists, but you
> can
> > write to the commons-logging API and use slf4j as the implementation.
> > That's what the Spring does on the SpringSource Application Platform
> > (S2AP), for example.
> >
> > I love the idea of new XML configuration.  A couple of comments on the
> > examples:
> >
> > <bean id="someBean" class="foobar">
> >     <property name="prefs">
> >         <desktop:prefs scope="user|system"
> > path="path/to/preferences/node"/> </property>
> > </bean>
> >
> > It's not clear from the example, but Spring already has support for the
> > scoping capability (via aop:scoped-proxy) as described in section 3.4 of
> > the reference manual.  I assume "user" scope would be defined based on a
> > Spring Security SecurityContext and "system" would be a standard
> singleton?
> >  Having the custom XML element would nicely hide those details from the
> > user.
> >
> > <desktop:view id="someView" viewClass="com.acme.foo.bar.SomeView">
> >     <property name="someService" ref="serviceId"/>
> > </desktop:view>
> >
> > <desktop:view id="otherView" viewClass="com.acme.foo.bar.OtherView"
> > mdi:closable="true" mdi:resizable="false">
> >     <property name="someService" ref="serviceId"/>
> > </desktop:view>
> >
> > <desktop:view id="yetAnotherView"
> > viewClass="com.acme.foo.bar.YetAnotherView" docking:closable="false"
> > docking:draggable="true">
> >     <property name="someService" ref="serviceId"/>
> > </desktop:view>
> >
> > In Spring 2.5 ADI style that might be done as
> >
> > <context:component-scan package="com.myco"/>
> >
> > @View
> > public class SomeView {
> >   @Autowired SomeView(SomeService someService) {..}
> > }
> >
> > @View
> > @MdiConfiguration(closable=true, resizable=false)
> > public class OtherView {
> >   @Autowired OtherView(SomeService someService) {..}
> > }
> >
> > @View
> > @DockingConfiguration(closable=false, draggable=false)
> > public class YetAnotherView {
> >   @Autowired YetAnotherView(SomeService someService) {..}
> > }
> >
> >
> > Modular plugin support is partly for plugins (a-la Eclipse or Netbeans),
> > but mostly for making it easier to do good modularity.  Hot-swapping,
> > discovery, etc are all just nice side-effects of having better
> modularity.
> > Fortunately, because of Spring Dynamic Modules this can always be added
> > later, especially if we follow the SpringDM conventions. (eg,
> > /META-INF/spring/application-context.xml)  S2AP can provide the
> underlying
> > support for that if we want.  Otherwise we can keep OSGi use (but not
> OSGi
> > compliance) out for now.  Having JSR-277 support (like WebStart and
> > Netbeans) would be awesome so people don't have to download 50 copies of
> > log4j and updates can happen faster/easier.
> >
> > -Jim Moore
> >  Senior Consultant, SpringSource
>
>
>
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