xml sax

[Robert Bossy]

Timothy Wu wrote:
> Hi,
>
> I am using  xml.sax.handler.ContentHandler to parse some simple xml.
>
> I want to detect be able to parse the content of this tag embedded in 
> the XML.
> <Id>174</Id>
>
>
> Is the proper way of doing so involving finding the "Id" tag 
> from startElement(), setting flag when seeing one, and in characters(),
> when seeing that flag set, save the content?
>
> What if multiple tags of the same name are nested at different levels
>
> and I want to differentiate them? I would be setting a flag for each level.
> I can imagine things get pretty messy when flags are all around.
>   
Hi,

You could have a list of all opened elements from the root to the 
innermost. To keep such a list, you append the name of the element to 
this stack at the end of startElement() and pop it off at the end of 
endElement().

In this way you have acces to the path of the current parser position. 
In order to differentiate between character data in Id and in Id/Id, you 
just have to iterate at the last elements of the list.

Cheers,
RB