Collecting plug-in metrics using XML API from Perl?

Hi all,
We are building a plug-in to retrieve metrics over an XML API.
The QueryDescriptor of each metric will do a call to the Agent's Perl script. This Perl script will then do the actual XML API call, to retrieve the metric's values.
Does anyone have experience with this? We needed to install a few extra Perl modules from CPAN, to provide the high-level HTTP(s) communication. These modules are not in the Perl that’s used by the Oracle Agent, so I’m not sure if this is going to work when called by the Agent.
Did any of you use an XML API? Did you make this a prereq (installing modules) or is there an alternative solution?
Many thanks,
Ed

Thank you, Ash. I read the example quickly, and found (quoted)from the paper - "the Applet was designed as compact as possible in order to limit download time and to fit in a 50K jar file. The JAXP XML Parsing API package, including the SAX parser from SUN Project X (approximately 150K) is one of the smallest implementations we were able to use. It is, however, still too large to be downloaded for each session; therefore, it was installed locally to keep the download time as low as possible."
However, in my current design, I can not ask each customer to install the JAXP API locally, so it seems that the API needs to be downloaded during the run time (am I right?). So the same problem will occur as that stated in the paper - the jar file is still too large to be downloaded for each session. Is there any lightweight API to solve it?
BTW, as you might see, the paper was published in year 2000, I don't think the JDK plugin supported XML at that time, so it is quite reasonable to download JAXP API in that paper. But my current question is - as I posted in my previous message - whether the newest JDK plugin (JDK1.4) support Java XML API?
Many many thanks.
- Sun

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