Re: [xmlblaster-devel] XML generation

[Marcel Ruff <mr at marcelruff.info>]

Quartier, Nicolas wrote:
> Marcel,
>
> The issues you're mentioning are indeed very important.
> But the thing is when you have an xmlblaster client publishing a message
> with eg. the oid = Jack&Moud, you'll get a parse error on the server side,
> because the XML that is sent over between client and server is invalid.
>
> As long as the application programmer does not use any 'special' 
> characters,
> everything should work fine.  But I think it's not a good idea to put
> a restriction on the use of 'special' characters.
No this is no good idea.

For now we have to avoid the characters

 &
 <
 '

in the XML key attribute fields

 oid
 contentMime
 contentMimeExtended
 queryType
 domain

all others (of ISO 8859-1) should be OK.

The client properties in the QoS section are automatically
base64 encoded (C++ and Java client library)
if they contain special characters (i have
fixed this for '&' in the current cvs).

The payload in the message 'content' may contain everything
as it is handled as a binary BLOB.

regards,

Marcel


> Regards,
> Nicolas.
>
> -----Original Message-----
> From: owner-xmlblaster-devel at server.xmlBlaster.org
> [mailto:owner-xmlblaster-devel at server.xmlBlaster.org]On Behalf Of Marcel
> Ruff
> Sent: vrijdag 6 augustus 2004 9:49
> To: xmlblaster-devel at server.xmlBlaster.org
> Subject: Re: [xmlblaster-devel] XML generation
>
>
> Quartier, Nicolas wrote:
>  > Hi,
>  >
>  > The xml used by XMLBlaster is parsed with a SAX parser it seems.
>  >
>  > But for the generation of XML strings, no parser is used, resulting in
>  > incorrect XML. (StringBuffers are used to generate the XML strings)
>  >
>  > The result is that special characters like &,  at , ... can not be used.
>  > eg "Jack&Moud" needs to be translated into "Jack&amp;Moud".
>  >
>  > Further information can be found on:
>  > http://www.javazoom.net/services/newsletter/xmlgeneration.html
>
> This is a nice overview, our constraints to change
> to another xml generation technique are:
>
>   - support for JDK 1.2 up to 1.5
>   - keep performance
>   - portability
>
>
> regards
>
> Marcel
>  >
>  >
>  > Has anyone else already tried to used some of those special characters ?
>  >
>  > Kind regards,
>  > Nicolas.
>  >
>
>
> --
> http://www.xmlBlaster.org


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