[jsr-314-open] support for html entities

[Dan Allen]

On Thu, Apr 2, 2009 at 4:02 PM, Alexandr Smirnov <asmirnov at exadel.com>wrote:

> After a code review, I  concern about properly implementation. The old
> facelets patch supports only pre-defined set of most popular HTML dtd's.
> Obliviously, direct requests to the online definitions should be
> disabled, because it could take significant impact to the application
> performance and crush application if server has no direct internet access.


It should definitely not be reaching out to the internet.

The possible options are:
> 1 VDL compiler resolves pre-defined entities only but block any other
> from loading.
> 2 Create cached entity resolver and load any referenced entities from
> internet only once.
> 3 Use configurable entity resolver. Implementation could define init
> parameter to enable resolver and define place of the configuration file
> ( For example, as OASIS XML catalog format ).
> 4. Combination of the options 1 and 3. Provide most used entities 'in
> the box' with optional configurable catalog.


#4 sounds reasonable to me. If the user configures a catalog, then it would
be acceptable for it to use a URI request. But no internet connection should
be required for the built in entities. I think we are looking for the common
ones. Those would be (available at W3C or in any XML package for Linux):

<!ENTITY % HTMLlat1 PUBLIC
   "-//W3C//ENTITIES Latin 1 for XHTML//EN"
   "xhtml-lat1.ent">
%HTMLlat1;

<!ENTITY % HTMLsymbol PUBLIC
   "-//W3C//ENTITIES Symbols for XHTML//EN"
   "xhtml-symbol.ent">
%HTMLsymbol;

<!ENTITY % HTMLspecial PUBLIC
   "-//W3C//ENTITIES Special for XHTML//EN"
   "xhtml-special.ent">
%HTMLspecial;

-Dan

-- 
Dan Allen
Senior Software Engineer, Red Hat | Author of Seam in Action

http://mojavelinux.com
http://mojavelinux.com/seaminaction

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