[xsd-users] Polymorphic type as root element

[Benjamin Schindler]

Hi

I tried the following too, but to no avail:

<settings xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:type="EnsightReaderSettings_t">
 	<filePath>somePath</filePath>
 	<firstSelectedTimeStep>0</firstSelectedTimeStep>
 	<lastSelectedTimeStep>1</lastSelectedTimeStep>
</settings>

On 06/30/2010 12:21 PM, Boris Kolpackov wrote:
> Hi Benjamin,
> 
> Benjamin Schindler <bschindler at inf.ethz.ch> writes:
> 
>> Now, I'd like to parse something like this (just that):
>>
>> <settings xsi:type="EnsightReaderSettings_t">
>> 	<filePath>somePath</filePath>
>> 	<firstSelectedTimeStep>0</firstSelectedTimeStep>
>> 	<lastSelectedTimeStep>1</lastSelectedTimeStep>
>> </settings>
> 
> Well, this XML document is invalid since there is no declaration for
> the 'xsi' prefix.
> 
> There is a way to parse this as a document fragment (as opposed to a
> standalone document) with the DOMLSParse::parseWithContext() function.
> See the Xerces-C++ documentation for details. Also note that this
> function is only available since Xerces-C++ 3.1.0. 
> 
> 
>> I invoked parseBaseSettings(myFstream), but it fails to parse this.
> 
> What is parseBaseSettings? Is it one of the generated parsing functions?
> Is it your own function? If it is a generated parsing function then the
> most likely reason is the lack of the namespace declaration mentioned
> above.

Sorry for not mentioning: EnsightReaderSettings_t is a type which
extends BaseSettings, and parseBaseSettings is therefore the parser
function to parse any BaseSettings type and should return a
EnsightReaderSettings object (in form of a BaseSettings
reference/pointer of course)

Cheers
Benjamin
> 
> Boris
>