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Re: Reference to an ENTITY

• To: XML Developers List <xml-dev@l...>
• Subject: Re: Reference to an ENTITY
• From: Christopher Milton <cmiltonperl@y...>
• Date: Fri, 20 Jan 2006 13:05:19 -0800 (PST)
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• In-reply-to: <D9A8D98DDC682044806D5B46AF5C11E2078BE6@A...>

You could use parameter entities to create a conditional DTD.

"Tip: Customize a DTD with parameter entities"
by Nicholas Chase (nicholas@n...),
President, Chase and Chase, Inc.
http://www-128.ibm.com/developerworks/xml/library/x-tiparam.html

--- "Vines, John  (Civ, ARL/CISD)" <jvines@a...> wrote:
> 
> All,
> 	I am working on a Schema and DTD for one of our data formats.  I
> need to include an "if/else" type statement for one of my elements.  The
> data can be stored directly in the XML file as CDATA or it can be stored
> in an external entity, an HDF5 file.
> 
> Here is the element I am working on:
> 
> <!--Lowest level element, describes the data that is present in the XDMF
> dataset-->
> <!ELEMENT DataStructure (How do I get to my data?, XML(internal) or
> ENTITY(External)>
> <!ATTLIST DataStructure
> 	Name CDATA #IMPLIED
> 	Rank CDATA #IMPLIED
> 	Dimensions CDATA #REQUIRED
> 	Precision (4 | 8) "4"
> 	Format (XML | HDF | Xml | Hdf) "XML"
> 	DataType (CHAR | FLOAT | INT | COMPOUND | Char | Float | Int |
> Compound) "Float"
> >
> 
> 	Again I'm new to XML and am not sure how to do this, so please
> forgive me if I ask the same type of question a couple of times.  
> 
> Thanks again for any help,
> 
> 
> John Vines
> ARL MSRC
> HPCD, CSEB
> Scientific Visualization Team

• References:
  • Reference to an ENTITY
    • From: "Vines, John \(Civ, ARL/CISD\)" <jvines@a...>

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