Re: [Jchassis-devel] JChassis update

[<sjs...@ya...>]

Also, attached is my "generic" research proposal.

 --- Sam Stainsby <sjs...@ya...> wrote: > Dear JChassis
folk,
> 
> Just another update on the progress of JChassis.
> 
> This week I started applying for a small grant
> for my QUT research. The closing date is next
> Friday - I'll let you know how I go.
> 
> I'm also in the process of negotiating an 
> intellectual property agreement with the director 
> of the research group I'm in at QUT (Centre for 
> Information Technology Innovation = CITI). My aim
> is to ensure that IP I develop consisting of JChassis 
> framework code, algorithms, doco, etc. remain mine, 
> and not QUTs. They get the other stuff - the results
> of the research. Should any of you decide to put 
> fingers to keyboard and write anything for JChassis, 
> please ensure that you have clarification, preferably 
> in writing, from you employers determining that you
> own the IP. Let me know if you need help with this.
> 
> Development-wise, JChassis is comming along in leaps
> and bounds. The two service containers (contexts), 
> "core" and "basic" are completed and unit tested. 
> Three plugin services, CommandLineParser, Log and 
> SAX2Parser (a convenient point to plug in SAX2 parsers) 
> are completed and unit tested. The SAX2 parser is used 
> to load XML configuration into the basic context.
> 
> I am also developing example programs which will aid 
> understanding of the JCHassis. Several of these are
> completed already.
> 
> The next major step are:
> 
>  * developing a facility that checks for 
>    dependencies between components and other
>    resources and ensures that these are satisfied 
>    during runtime (or maybe just at installation time)
>  * working out how to package components into
>    easily deployable units (consider EAR files in
>    Enterprise Java)
>  * defining some kind of configuration to declare
>    dependencies between components and other resources
> 
> For example, a service interface "A" might have
> an implementation class "AImpl". This implementation
> might require a service with interface "B".
> Also, If AImpl was doing something with SAX2, 
> it might require the org.sax.XXX packages. These 
> only come out-of-the-box with JRE 1.4, but are 
> also available elsewhere so they can be used with 
> JRE 1.1 up to JRE 1.3. So there is a set of 
> dependecies here that I would like to check
> automatically, during runtimne (or possible only
> once during installation of the components/resources).
> 
> We might declare the dependencies above with a 
> little XML (I'm just making up the package names
> here):
> 
>     <interface>
>         <class>org.jchassis.a.A</class>
>         <metadata><name>Version</name><value>1.00</value></metadata>
>         <metadata><name>Author</name><value>Bob
> Bilby</value></metadata>
>     </interface>    
> 
>     <interface>
>         <class>org.jchassis.b.B</class>
>         <metadata><name>Version</name><value>1.01</value></metadata>
>         <metadata><name>Author</name><value>Mary
> Hooha</value></metadata>
>     </interface>    
> 
>     <implementation>
>         <class>org.jchassis.a.impl.AImpl</class>
>         <metadata><name>Version</name><value>5.15a</value></metadata>
>         <metadata><name>Author</name><value>Fred
> Whatsit</value></metadata>
>         <depends>
>             <interface>org.jchassis.b.B</interface>
>             <choice>
>                 <jre>1.4</jre>
>                 <module>SAX2</module>
>             </choice>
>         </depends>
>     </implementation>
>             
>     <module> <!-- module = group of classes and packages -->
>         <name>SAX2</name>
>         <package>org.xml.sax</package>
>         <package>org.xml.sax.ext</package>
>         <package>org.xml.sax.helpers</package>
>         <depends>       
>             <jre>1.1</jre>
>         </depends>
>     </module>
> 
> 
> Presumably, each piece of configuration would
> be stored with the approriate interface, implementation
> or module JAR file ... 
> 
> Anyweay, let me know if you have any ideas ...
> 
> Cheers,
> Sam.
> 
> =====
> Sam Stainsby
> 
> http://www.yahoo.promo.com.au/hint/ - Yahoo! Hint Dropper
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> Dropper!
> 
> 
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=====
Sam Stainsby

http://www.yahoo.promo.com.au/hint/ - Yahoo! Hint Dropper
- Avoid getting hideous gifts this Christmas with Yahoo! Hint Dropper!