On Tue, Dec 8, 2009 at 1:26 AM, Toby <tobias.ro...@sunnymail.mobi> wrote: > Reading the doc carefully it tells me that indexes are created based > on the queries I make. Hence if I never query an entity on a certain > property there should be no index.
That's not exactly what it says. Only the development servers "creates" indexes automatically by inserting a few lines in your datastore-indexes-auto.xml. (It doesn't actually create indexes as the development server doesn't need indexes to access data, I believe.) The point of that mechanism is to make it easy for you to know which indexes to request on the production appengine: just look in the datastore-indexes-auto.xml, and copy the lines that you want from it. If so configured, appcfg.sh will copy the entire content of datastore-indexes-auto.xml to the production server. > Also in the app-engine administration there is a menu entry "Indexes" > which only lists two indexes that I am actually using. > > Now if I understand right per default many more indexes are created if > I need them or not. This should be mentioned more clearly because it > could help to save a lot of space. That's it. Most of the indexes space is likely to be coming from implicit indexes. > Is there an JDO annotation to disable indexes on properties or do I > need to disable auto-index? There is: @Persistent @Extension(vendorName = "datanucleus", key = "gae.unindexed", value="true") private String unindexedString; It's in the doc: http://code.google.com/intl/en/appengine/docs/java/datastore/queriesandindexes.html -- 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.
