Hi everybody,
I've just returned from a 1 week vacation. To my deception i've seen that the
proposition did not get any comments from the people at Sun.
I would like to ear from you guys... Is the proposition not good for you? if so do
you have any comments? If it sound good for you? Can you still comment on it.
In my spare time I will start converting the existing DTD to a new one that will
include more validation. I will try to get everyone happy on the consistency side.
When the first draft will be completed, I will post it on this newsgroup and on my
website (http://www.javatips.ddns.org). I expect the first draft to be complete in
two or three weeks (I've just moved in a new house, I will not have a lot of spare
time).
SeeU!
Emmanuel Pirsch wrote:
> Hi everyone,
>
> Here is an idea I had to try to reconcile the two side about the EJB1.1 XML
> deployment descriptor.
>
> First, let resume the two sides:
>
> All elements DTD
> ------------------
> The "all elements" side want a dtd where each everything in the XML document is
> an element.
> The main arguments for this is:
> - Consistency
>
> This approach requires an validate everything validator, wich will be written,
> eventually, as a JavaBean.
>
> Put some xml attributes DTD
> -----------------------------
> The "put some xml attributes" side want to specify attributes to qualify the
> main elements (ex: 'reentrant').
> The main argumkenrs are:
> - Better DTD validation
> - Can use any generic XML editor to produce a valid XML DD document
>
> This approach require a DTD that specify the validation to produce a valid
> document, and a validator that will validate more complex validation rules
> (such as valid class names and stuff like that).
>
> I think a compromise can be made that will allow for a strong DTD validation
> with an approach that offer more consistency.
>
> The general idea is to have an all elements approacyh, with the addition of
> "value" attributes to provide the domain of value for specifying the value of
> an element. If the value of an element is free-form text, then no attributes
> will be specified, and a text-node will represent the value (as in the current
> DTD).
>
> For example, the current DTD specifies the <Reentrant> element like this:
> <!ELEMENT reentrant (#PCDATA)>
>
> Here is an example of how it will looks like in a xml document:
> <entity>
> <reentrant>False</reentrant>
> </entity>
>
> With the current proposition it will be specified like this:
> <!ELEMENT reentrant EMPTY>
> <!ATTLIST reentrant
> value (True | False) "True"
> >
>
> Here is an example of how it will looks like in a xml document:
> <entity>
> <reentrant value="False"/>
> </entity>
>
> Note that values that are not multiline (like class name) should be specified
> the same way.
> <!ELEMENT ejb-class EMPTY>
> <!ATTLIST ejb-class
> value CDATA #required
> >
>
> By using this approach, we keep the consistency argument, everything is an
> element.But we have the added value that we can specify a domain for each value
> that requires one.
>
> Also the code that read the document will be cleaner, with DOM it take less
> steps to read a attribute value than a text-node.
>
> Another thing to change would be to put all the element in a namespace
> ("ejb-dd" for example).
>
> I hope this new idea will stimulate the discussion in a constructive way.
>
> SeeU!
>
> -----
> Emmanuel Pirsch
> Sun Certified Java Programmer
> Unite for Java! - http://www.javalobby.org/
> ---
> "The intuitive mind is a sacred gift and the rational mind is a faithful
> servant. We have created a society that honors the servant and has forgotten
> the gift."
> - Albert Einstein.
>
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--
-----
Emmanuel Pirsch
Sun Certified Java Programmer
Unite for Java! - http://www.javalobby.org/
---
"The intuitive mind is a sacred gift and the rational mind is a faithful servant.
We have created a society that honors the servant and has forgotten the gift."
- Albert Einstein.
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To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
of the message "signoff EJB-INTEREST". For general help, send email to
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