Would you share the solution with us? please On Nov 7, 3:59 am, delightwjk <delight....@gmail.com> wrote: > I have fixed this problem. Thanks. > > On Nov 6, 11:05 am, delightwjk <delight....@gmail.com> wrote: > > > Thank you Jorge, > > > I checked the document you mentioned, but i'm still not sure what is > > the reason of my issue. I added a field in JDO (Boolean successFlag), > > and stored several entities in datastore, I was able to see the > > entities with successFlag property from admin console "Datastore" -> > > "Data Viewer", and the values of successFlag properties were correct. > > The entities have the property successFlag with correct value, and the > > JDO class has the corresponding field, but why I could not retrieve > > the values of successFlag via JDO? > > > Jiakuan > > > On Nov 5, 9:57 pm, Jorge <athenas...@gmail.com> wrote: > > > > You may want to check the rules that apply in this case as documented > > > at the bottom of this page:: > > > http://code.google.com/appengine/docs/java/datastore/dataclasses.html > > > > Jorge Gonzalez > > > > On Nov 4, 8:06 am, delightwjk <delight....@gmail.com> wrote: > > > > > Hi All, > > > > > I created a JDO class, which had some attributes, and I created some > > > > CRUD operations, all of them worked correctly. > > > > > Then I added a new attribute in the JDO class, and then set value to > > > > it and persisted it as usual when I executed CRUD operations. The > > > > problem is that I cannot retrieve the value of the new attribute in > > > > program, the value is always null. But when I check the value in > > > > "Datastore" -> "Data Viewer", the value is correct. So i'm wondering > > > > why it cannot be retrieved in application. Is there some cache > > > > mechanism? > > > > > Thanks in advance! > > > > Jiakuan
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