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Re: Regarding XSchema : Section 4.3.1

• From: rbourret@d... (Ron Bourret)
• To: xml-dev@i...
• Date: Tue, 13 Oct 1998 17:29:32 +0200

Amit Rekhi wrote:
> *            The section 4.3.1 of the XSchema spec "Converting DTDs to
> XSchema Documents" states that Parameter entity declarations may be
> converted to parsed general entity declarations and use.
> 
>             If this were to happen then this means that the resulting
> XSchema would have a DTD (internal/external subset) which would house the
> converted parameter entity declarations as general entity declarations since
> XSchema does not give any construct for Parsed General Entity declarations.
>             Am I right?

Correct.

> *         Section 4.3.1 also states that Parsed general entity declarations
> CANNOT be transformed to XSchema structures.
> 
>             If we may transform parameter entity declarations (from a source
> DTD) into corresponding general parsed entity declarations (in the target
> XSchema) , then why the restriction in case of general parsed entity
> declarations?

The problem is that parsed general entities apply the file in whose DTD they are 
defined.  If we transfer the parsed general entity definitions to the DTD of the 
XSchema file, they apply to the XSchema file.  That is, they do not apply to the 
instance file defined by that XSchema file, which is what you want.  If you want 
to keep such definitions around, you must place them in an external subset that 
is included in each instance file.  While this is certainly possible, it has 
nothing to do with XSchema.

-- Ron Bourret

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