On Tue, 2010-04-13 at 00:23 +0200, Philippe wrote: > > Alright, so assuming we're looking for a slice of the grid against a > > given time-frame, that would look something like: > > > > get_range_slice( > > keyspaceName, > > ColumnParent(CFname, timeFrame), > > SlicePredicate( > > slice_range=SliceRange(xstart, xend, false, colCount) > > ), > > ystart, > > yend, > > rowCount, > > consistencyLevel, > > ) > > > > Does that help? > > > Yes it confirms my understanding, thanks. > > However, you are also saying there is no way to also take into account > the "timeFrame" supercolumn in the same API call ? IE, it is not > possible to get back a data structure keyed by > 'key,supercolumn,column' hence y,x and timeframe which I can then > process to my heart's delight ?
If you're talking about constructing predicates to slice on both time *and* X coordinate, then no. You can omit the super column name from the ColumnParent and return a slice of super columns (by time period) complete with all contained sub-columns, but you can't have it both ways, no. -- Eric Evans eev...@rackspace.com
