Re: [jboss-as7-dev] Validation of XML Parsers / Schemas
Yes, at the moment the way I am thinking about this nothing would be
*required* to change - the ValidatingXmlReader would just be wrapping
the XMLExtendedStreamReader and the underlying calls to the
XMLExtendedStreamReader would remain the same so everything can continue
using the XMLExtendedStreamReader until ready.
I think I would probably actually recommend not pro-actively making a
switch but instead for subsystems / domain parsers to switch at the time
the schema version is bumped.
To begin with if we wanted to to try something out we could even
maintain the exact registration / calls we have today and just
instantiate the ValidatingXmlReader on the first line of a readElement
call to wrap the passed in reader. e.g. As a first step it could be
introduced for host.xml reading alone.
Regards,
Darran Lofthouse.
On 09/27/2011 07:38 PM, Brian Stansberry wrote:
Can this be done without *requiring* changes to subsystems?
ExtensionParsingContext.setSubsystemXmlMapping(String namespaceUri,
XMLElementReader<List<ModelNode>> reader) is a stable API that we cannot
break.
A new method could be added to register a parser that requires a
ValidatingXmlReader to be passed in, but we can't force subsystems to
change their impl's
public void readElement(final XMLExtendedStreamReader reader, final
List<ModelNode> list) throws XMLStreamException
to
public void readElement(final ValidatingXmlReader reader, final
List<ModelNode> list) throws XMLStreamException
On 9/27/11 11:42 AM, Darran Lofthouse wrote:
> The topic of how to validate the XML parsers or the schemas crops up
> every now and again.
>
> I have been having a couple of ideas of how we could at some point look
> into this: -
>
> http://community.jboss.org/docs/DOC-17243
>
> The proposed idea actually covers two parts: -
> - A wrapper around the existing API that allows the parsers to just
> request the elements / attributes they require and leave the wrapper to
> handle all the error handling we currently have distributed across the
> parsers.
>
> - This then allows us during testing to validate that the calls match
> the structure defined in the schema.
>
> I may try prototyping something other the weekend but thought I would
> put this out there and see if anyone has any thoughts / comments.
>
> Regards,
> Darran Lofthouse.
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