Since it is not explicitly documented as thread safe, you should not make this assumption. Basically, it's the same as us telling you not to use undocumented methods because they *can* and *have* changed.
On Fri, Apr 2, 2010 at 11:46 AM, Matt Farnell <mfarn...@gmail.com> wrote: > Hi Ikai, > > It says in that forum that it's 'probably' not thread safe, so is it thread > safe or not? If its not threadsafe then we should never use a singleton > instance. > > Can you give us a more definitive answer such as it's not threadsafe so > never cache the instance, or it is threadsafe so therefore it is up to us. > It would be very helpful. > > thanks, > Matt > > On Fri, Apr 2, 2010 at 9:54 AM, Ikai L (Google) <ika...@google.com> wrote: > >> You're probably best off creating new instances of DatastoreService. There >> are some good points raised here: >> >> >> https://groups.google.com/group/google-appengine-java/browse_thread/thread/e19b792042b2ff9b# >> >> On Fri, Apr 2, 2010 at 1:26 AM, Matt Farnell <mfarn...@gmail.com> wrote: >> >>> I finally figured it out, its on the Datastore config level. >>> >>> DatastoreServiceConfig config = >>> DatastoreServiceConfig.Builder.withReadPolicy(newReadPolicy(Consistency. >>> EVENTUAL)); >>> >>> DatastoreService dss >>> = DatastoreServiceFactory.getDatastoreService(config); >>> >>> I thought it would have been on the Query object as it is in the JDO >>> example posted in the blog. I was using a singleton as I thought we were >>> only meant to instantiate one DatastoreService instance and reuse it?? >>> >>> >>> On Fri, Apr 2, 2010 at 1:04 AM, lepah <mfarn...@gmail.com> wrote: >>> >>>> Hi there, >>>> >>>> How can I use this with the low level datastore, I've looked around in >>>> the JavaDocs and found ReadPolicy.Consistency but couldn't find >>>> anywhere to set it. It could be just me as it's 1AM. Would love to try >>>> it out. >>>> >>>> On Apr 1, 11:39 am, Isdal <tomas.is...@gmail.com> wrote: >>>> > Thanks Ikai! >>>> > >>>> > I noticed that the docs are updated now too. This page has a couple >>>> > examples on it as well: >>>> http://code.google.com/appengine/docs/java/datastore/usingjdo.html >>>> > >>>> > // Tomas >>>> > >>>> > On Mar 30, 3:57 pm, "Ikai L (Google)" <ika...@google.com> wrote: >>>> > >>>> > >>>> > >>>> > > Yep. The example is documented here: >>>> > >>>> > > >>>> http://googleappengine.blogspot.com/2010/03/read-consistency-deadline. >>>> .. >>>> > >>>> > > < >>>> http://googleappengine.blogspot.com/2010/03/read-consistency-deadline.. >>>> .>Query >>>> > > q = pm.newQuery(Employee.class); >>>> > > q.addExtension("datanucleus.appengine.datastoreReadConsistency", >>>> > > "EVENTUAL"); >>>> > >>>> > > On Fri, Mar 26, 2010 at 5:12 PM, Isdal <tomas.is...@gmail.com> >>>> wrote: >>>> > > > Hi all, >>>> > >>>> > > > Thanks for all new new features in 1.3.2! >>>> > >>>> > > > I was just wondering if it is possible to use the >>>> > > > "ReadPolicy.Consistency.EVENTUAL" feature and still use the JDO >>>> > > > interface. >>>> > >>>> > > > I am currently getting a PersistenceManager with: >>>> > > > JDOHelper.getPersistenceManagerFactory("transactions- >>>> > > > optional"); >>>> > >>>> > > > Is there a way to tell the PersistenceManager to tell the >>>> datastore to >>>> > > > accept eventually consistent reads? Most of my app can handle >>>> stale >>>> > > > data, and any performance improvement would be great! >>>> > >>>> > > > Thanks! >>>> > >>>> > > > // Tomas >>>> > >>>> > > > -- >>>> > > > 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<google-appengine-java%2bunsubscr...@googlegroups.com><google-appengine-java%2B >>>> unsubscr...@googlegroups.com> >>>> > > > . >>>> > > > For more options, visit this group at >>>> > > >http://groups.google.com/group/google-appengine-java?hl=en. >>>> > >>>> > > -- >>>> > > Ikai Lan >>>> > > Developer Programs Engineer, Google App Enginehttp:// >>>> googleappengine.blogspot.com|http://twitter.com/app_engine >>>> >>>> -- >>>> 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<google-appengine-java%2bunsubscr...@googlegroups.com> >>>> . >>>> 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 >>> google-appengine-j...@googlegroups.com. >>> To unsubscribe from this group, send email to >>> google-appengine-java+unsubscr...@googlegroups.com<google-appengine-java%2bunsubscr...@googlegroups.com> >>> . >>> For more options, visit this group at >>> http://groups.google.com/group/google-appengine-java?hl=en. >>> >> >> >> >> -- >> Ikai Lan >> Developer Programs Engineer, Google App Engine >> http://googleappengine.blogspot.com | http://twitter.com/app_engine >> >> -- >> 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<google-appengine-java%2bunsubscr...@googlegroups.com> >> . >> 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 > google-appengine-j...@googlegroups.com. > To unsubscribe from this group, send email to > google-appengine-java+unsubscr...@googlegroups.com<google-appengine-java%2bunsubscr...@googlegroups.com> > . > For more options, visit this group at > http://groups.google.com/group/google-appengine-java?hl=en. > -- Ikai Lan Developer Programs Engineer, Google App Engine http://googleappengine.blogspot.com | http://twitter.com/app_engine -- 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.
