Mailing-List: contact general-help@xml.apache.org; run by ezmlm
Message-Id: <5.0.2.1.0.20010126081639.00aacec0@ce-nfs-1.cisco.com>
Date: Fri, 26 Jan 2001 08:18:30 -0800
To: general@xml.apache.org
From: Patrick Lightbody <plightbo@cisco.com>
Subject: Re: getting a list of valid elements
In-Reply-To: <802569E0.00324B94.00@mailhost.catalyst-solutions.com>
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I have found two answers thus far (from the XForms mailing list that w3c is 
controlling):

I'm getting a demo of a commercial product today sometime, I'll let you 
know how it goes. There is no info of this product on the web though, so 
I'm skeptical. I also was pointed to this open source project:
http://www.infozone-group.org/index.html

I'll keep you posted.

-Pat

At 09:12 AM 1/26/2001 +0000, you wrote:
>I have been down this route too, with zero success (in fact I posted a
>question on this list & got no responses at all). It seems quite
>extraordinary, and very irritating, that you cannot obtain this information
>through DOM when it's all there in the DTD. Of course you can read the DTD
>line by line & parse it yourself, but I worked around it another way in my
>application.
>If you get any joy, please keep me posted - would appreciate it a lot.
>Mandy
>
>
>
>
>
>Patrick Lightbody <plightbo@cisco.com> on 26/01/2001 01:25:25
>
>Please respond to general@xml.apache.org
>
>To:   general@xml.apache.org
>cc:    (bcc: Mandy Shaw/Pacific/UK)
>Subject:  getting a list of valid elements
>
>
>
>
>I have explored using Xerces and Oracle's XML parsers to be able to create
>a simple web-based XML editor. Consider this sample use-case:
>
>I have a DTD or XML Schema that defines the grammar as:
><foo>
><bar item="1">#PCDATA</bar>
><bar item="2">#PCDATA</bar>
><bar item="3">#PCDATA</bar>
>...
><bar item="n">#PCDATA</bar>
></foo>
>
>I need to present a web-based form for one textfield with input for the
>PCDATA for "bar #1". Since the grammar defines that <foo> must have 1 or
>more <bar> elements. So somehow I need to get my class to "know" that "foo"
>can have one or more "bar" elements. It must also know that "bar" can have
>no child elements, but can have many "bar" siblings. Is this possible? XML
>Spy has helpers in the application that present the "expected elements"
>defined by the XML grammar, yet I can't find any parser that allows for
>this.
>
>Obviously if a validating parser can throw an Exception if I add an
>*unexpected* element to the tree, it must somehow know which elements are
>*expected*. Is it possible to get that list of expected elements? With this
>"list" of expected child and sibling elements, I could be able to build a
>simple web-bases XML editor that would prompt for data inputs, entirely
>independent of the XML schema/DTD.
>
>-Pat
>
>
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>       Regards,
>       Mandy Shaw
>
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