Thank you, that's fine but what if down the road I want to remove the nail color attribute (and other attributes that I do not remember) ?
It'll just hang out there until you explicitly delete it (or, if you have set your schema to expire cells, it'll be removed after the time-to-live has passed). St.Ack On Thu, Nov 6, 2008 at 12:27 AM, stack <[EMAIL PROTECTED]> wrote: > As long as they are all of the person family (or some pre-existing > columnfamily), that should be fine (and during updates you prefix Map keys > with columnfamily name). You'll have person:name, person:address and > person:email. If three months down the road you add nail color, and you do > an update, the new 'nail color' attribute will be added as 'person:nail > color'. > > St.Ack > > > On Wed, Nov 5, 2008 at 11:49 PM, Michael Dagaev <[EMAIL PROTECTED]>wrote: > >> Hi, Hui >> >> It is Ok if "Person" (in my example) is a class >> with "name", "address", and "email" fields. >> >> However, what if this "Person" is just a map, >> where "name", "address", and "email" are keys >> I do not know in advance ? >> >> Thank you for your cooperation, >> M. >> >> On Tue, Nov 4, 2008 at 8:51 PM, Ding, Hui <[EMAIL PROTECTED]> wrote: >> > Why do you need to compare it? Just store a new version for every >> > attribute/column that is not null. >> > >> > -----Original Message----- >> > From: Michael Dagaev [mailto:[EMAIL PROTECTED] >> > Sent: Tuesday, November 04, 2008 10:32 AM >> > To: [email protected] >> > Subject: [LIKELY JUNK]Question on update >> > >> > Hi, all >> > >> > Let there is a row in People table. The column family Details >> > consists of name, address, and email. >> > Now I have a Person object which corresponds to this row. This object >> > contains name and address >> > but email is null. >> > >> > In order to update the row with the new data from the Person >> > object. I have to read the row, compare it >> > with my object and store only the difference. Is it correct? >> > >> > Thank you for your cooperation, >> > M. >> > >> > >
