The following code is throwing exception because string field has the SQL reserved word \"by\" in it. How would I escape this reserved word. The code is meant for google datastore.
I am trying to build a simple app using google app engine, with java and JDO. my application creates Sale objects and persists them to the datastore, once persisted i attempt to list using a query, A
I am not sure what am I doning wrong here? It complains \"Joins are only supported when all fi开发者_运维技巧lters are \'equals\' filters.\" when the query is executed. How can I get around that?
I\'m a relative Java EE lightweight, tasked with moving an old app from OC4j 10.x (JEE 1.1) into Glassfish 3.1 (JEE 1.4).I\'m attempting to understand what this deployment error means and how I should
Hello I have this DatastoreNeedIndexException when I try to order by my query. here is the code: @PersistenceCapable
I\'m trying to create a query so that all items of a given list (parameter) are contained in a a table\'s column (which is also a list). I also need a query so that at least one item of a given list (
Here is the code snippet I am trying to get to work: final Query query = pm.newQuery(\"SELECT FROM model.Strip WHERE publishOn <= startDate
I have a User object which has a collection of Transaction objects und开发者_如何学Goer it. I store the object ID for my User object and now need a query to sum the transactions under the User object
In my GAE application I want to make a 开发者_开发技巧JDOQL which returns a List where every element exist at most once even in the database there are more. How can I do this?I dont know about JDOQL,
I am having trouble with subquery counts with JDOQL (using DataNucleus). The following query SELECT this.price
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