Howdy

I'm trying to understand the data structures specifically, portfolios, positions and transactions.

Starting with portfolio To me, a portfolio has data with a 1 to 1 relationship (such as name, reporting currency, id - others) and 1 to many relationships (lists) like positions (and really transactions but I'll get into that at another time)

Seems to me com.google.gdata.data.finance.PortfolioData +com.google.gdata.data.finance.PortfolioEntry are basically the 1to1 stuff. Does that make sense? If so, why 2 objects?

Is com.google.gdata.data.AbstractExtension is a general purpose way of defining extensions to a com.google.gdata.data.BaseFeed....sort of like a way to add key value pair to a PortfolioFeed such as "broker=TDW"?

If so....Is com.google.gdata.data.finance.PortfolioData simply a convenience object that delegates/maps to extensions of com.google.gdata.data.finance.PortfolioEntry?

Thanks folks - if this is a rtfm sort of thing, any suggestions on where I can look?