So this has to be done for every "page"? if so, how efficient is that? You wouldn't happen to have a code sample would you?
On Apr 29, 5:54 pm, "Ikai L (Google)" <[email protected]> wrote: > No, setExtend(-20, 0) won't work. What you'll have to do is find the first > element in your query and construct the reverse query for all elements less > than the current first element. You then have cursors going the other way. > Note that you'll need an index for the opposite direction. > > > > On Thu, Apr 29, 2010 at 2:23 PM, ljw1001 <[email protected]> wrote: > > Use limit and offset on the query filter to do your paging > > > Sent from my iPhone > > > On Apr 29, 2010, at 4:37 PM, brendan <[email protected]> wrote: > > > If it did, this would be useful when the user selects to display the > >> previous page. > > >> On Apr 30, 6:17 am, korey_sed <[email protected]> wrote: > > >>> I wonder if the java datastore API's cursor is a forward only cursor > >>> or not? if not, how do you go back? > > >>> q.setExtend(-20,0) //to get the previous 20? > > >>> -- > >>> You received this message because you are subscribed to the Google Groups > >>> "Google App Engine for Java" group. > >>> To post to this group, send email to > >>> [email protected]. > >>> To unsubscribe from this group, send email to > >>> [email protected]<google-appengine-java%[email protected]> > >>> . > >>> For more options, visit this group athttp:// > >>> groups.google.com/group/google-appengine-java?hl=en. > > >> -- > >> You received this message because you are subscribed to the Google Groups > >> "Google App Engine for Java" group. > >> To post to this group, send email to > >> [email protected]. > >> To unsubscribe from this group, send email to > >> [email protected]<google-appengine-java%[email protected]> > >> . > >> For more options, visit this group at > >>http://groups.google.com/group/google-appengine-java?hl=en. > > > -- > > You received this message because you are subscribed to the Google Groups > > "Google App Engine for Java" group. > > To post to this group, send email to > > [email protected]. > > To unsubscribe from this group, send email to > > [email protected]<google-appengine-java%[email protected]> > > . > > For more options, visit this group at > >http://groups.google.com/group/google-appengine-java?hl=en. > > -- > Ikai Lan > Developer Relations, Google App Engine > Twitter:http://twitter.com/ikai > Delicious:http://delicious.com/ikailan > > ---------------- > Google App Engine links: > Blog:http://googleappengine.blogspot.com > Twitter:http://twitter.com/app_engine > Reddit:http://www.reddit.com/r/appengine > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine for Java" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group > athttp://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
