GAE recommends using JDO/JPA. But I have serious question about using OODB like them. JDO based on user\'s class structure. And d开发者_如何学Goata structure should be modified continually as service
I am implementing a tagging system for a website that uses JDO . I would like to use this method. However I am new to relationships in JDO.
I\'m using the .startsWith() filter in a JDOQL query but it\'s case sensitive. So start开发者_Go百科sWith(\"ab\") doesn\'t return \"Abc\" result and so on.
I am completely fresh to both JDO and GAE, and have been struggling to get my data layer to persist any code at all!
My class looks like this : import javax.jdo.annotations.IdGeneratorStrategy; import javax.jdo.annotations.IdentityType;
I have a simple class, relevant details below: @PersistenceCapable(identityType = IdentityType.APPLICATION)
I have a simple data model that includes USERS:store basic information (key, name, phone # etc) RELATIONS:describe, e.g. a friendship between two users (supplying a relationship_type + two user keys
Running KODO 4.2 and having an issue inefficient queries being generated by KODO. This happens when fetching an object that contains a collection where that collection has a bidrectional relationship
I am trying to create a database of users with connection between users (friends list). There are 2 main tables: UserEntity (main field id) and FriendEntity with fields:
I\'m hitting what appears (to me) strange behavior when I pull data from the google datastore over JDO.In particular, the query executes quickly (say 100 ms), but finding the size of the resulting Lis
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