iPhone Implement Search against API XML

I want to implement a search feature in an iPhone app. Basically, the user can enter some terms say "searchterm" and pass it as a URL to the API I am using. The API returns an XML. I need to parse the search results from what the user selects.

I just wanted to understand how this search thing will work. Any reference e开发者_运维百科xamples would be really helpful. This will be somewhat similar to a search on iPhone App Store.

Thanks.

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Actually the information that I need gets returned both in attributes as well as nodes in the XML.