On Thu, 2004-09-16 at 04:02, Fuller, Alex wrote:
> A tangential question:
> Is it necessary to set the externalSchemaLocation property if you
> preload schema Grammars into a GrammarPool? Once the pool is loaded,
> it is given to the parser's configuration. What if the pool is not locked?
>
> As I understand it, an XMLGrammarPreparser can figure out the schema's
> namespace as it loads the file. This allows my customers to supply only
> a file location for their schema and not force them to provide the
> namespace, as well. Is this an incorrect approach?
>
It is necessary to set the property, but the value doesn't matter.
I do something very similar to what you are implementing, and have this
code. Note that in my case rootElementNS is a parameter provided by the
user, and this code runs *before* the parsing starts.
if (rootElementNS[0] == 0)
{
// The external-noNamespaceSchemaLocation property has to be set
// in order for a root element with no namespace to trigger a
// lookup of targetNamespace "" in the grammar pool. But it
doesn't
// matter what it is set to, because before attempting to load
the
// referenced schema via its location the parser first checks
whether
// there is a preloade grammar with targetNamespace="", and we
have
// just verified above that there is.
XMLCh dummySchemaLocation[] = {chNull};
parser->setProperty(
XMLUni::fgXercesSchemaExternalNoNameSpaceSchemaLocation,
dummySchemaLocation);
}
else
{
// We must disable any previous setting for the property
// externalNoNamespaceSchemaLocation,
parser->setProperty(
XMLUni::fgXercesSchemaExternalNoNameSpaceSchemaLocation,
0);
}
I hope this helps.
Regards,
Simon
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