I have a Spring application in GoogleApp engine which uses JDO to persists objects. So I\'m using it in this way in my service layer to keep transactions (with @Transactional annotation).
Suppose we have a JDO entity that uses an unencoded string as the PrimaryKey.Is there some practical limit 开发者_JAVA百科on the size that this unencoded string could be? Specifically, I\'m wondering
There are two different ways to perform transactions (JDO) in the App Engine datastore. Method 1: Use PersistenceManager
Hi i am having some problems retreiving data from the datastore... I have a few circuses, who has some amount of attractions.
I\'m using JDO with Google App Engine for storage and I\'m wondering what is the difference between the Key object and Long for id?
I\'d like to implement a simple category system for my recipes. Here\'s my Recipe entity: @PersistenceCapable
I am getting this error when running junit test Testcase: testGet_User(Authentication.UserManagerTest):Caused an ERROR
Should I expect a noticeable performance boost after switching from JDO/JPA to low开发者_C百科-level datastore API? Also, are there any things I should be aware of before switching?The difference is s
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I keep getting a 500 error everytime to run my service, since the google message tells mme almost nothing i began uploading the service and commenting parts out. It seems to work fine with out using t
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