1) yes, that should work just fine (at least in low-level datastore API it does) 2) your key should not be your security / accessibility mechanism, so yes, it should be fine (although using a Long id vs. keyAsString would be prettier). also, you want to make sure you restrict access to your entities by who can see the entity 3) since we're using approach in #1, just add that to your query, where listItem parentKey = listcontainerkey and isProcess=true or whatnot. much easier.
On Apr 26, 9:47 pm, Pk <prakash...@gmail.com> wrote: > Hi, I have a parent ListContainer entity with key and name properties. > and I have a child ListItem entity with key, name and parentkey > properties. The parentkey simply refers to the key in ListContainer. I > am building a site where I list the names in listcontainer, and when > the user chooses a name, it'll display the top 100 list items. I have > three questions > 1) I am wondering if it would be efficient in terms of performance if > I use the "key on child" approach. i.e., query the listitem where > parentkey = listcontainerkey. > 2) While displaying the names of listcontainer, is it safe to pass the > keys to the client browser and get it back? > 3) The ListItem has an additional property "IsProcessed". Now, I want > to display only the items which are not processed. Over a period if > time, I am expecting lot of listitems per listcontainer. Do you think > it would be wise to have the processed items in separate list and > delete it from the original? > > I would very much appreciate your help as I've been struggling with > this requirement for long time. > > -- > 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 google-appengine-j...@googlegroups.com. > To unsubscribe from this group, send email to > google-appengine-java+unsubscr...@googlegroups.com. > 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 google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
