XML Parser

[Michael (18)]

hello,
I'm quite new to XML parsing, so please bare with me. I'm learning about Xerces, and I was wondering how people extract data after the document being parsed. For example, I have:

<WEATHER>
<CITY NAME="New York">
<TEMP>64</TEMP>
</CITY>
</WEATHER>

and want to create an object for this as Weather {city, temp}. After creating a DOMparser, then parse via the parse method, then should the node be checked if it's of "Weather", create an instance, and then traverse for "City" and "Temp"? Is this the usual way of extracting?

Any help would be appreciated.
Thank you very much,
Michael

 

[Josef Garvi]

<WEATHER>
<CITY NAME="New York">
<TEMP>64</TEMP>
</CITY>
</WEATHER>

and want to create an object for this as Weather {city, temp}. After creating a DOMparser, then parse via the parse method, then should the node be checked if it's of "Weather", create an instance, and then traverse for "City" and "Temp"? Is this the usual way of extracting?

I think it's just a matter of finding what seem most effective for you. Personally, I would create a constructor:

public Weather(Element weatherNode) {
// walk through subelements here to initialise fields
}

and let the Weather object initialise itself based on the node. (possibly throwing an exception if the subsequent xml nodes are invalid)

Then all I would need would be to loop through all weather elements and call my constructor for them. If my xml document was complex, and the weather nodes were buried deep down, I could use XPath to immediately resolve to the weather element collection.