1. Stored procedures vs JDO for data warehousing project stackoverflow.comIn the old days we used to access the database through stored procedures. They were seen as `the better' way of managing the data. We keep the data in ... |
2. JDO not saving object stackoverflow.comI have a class |
3. Why "pm.newQuery(Employee.class)" and not "pm.newQuery(Employee)" in JDO? stackoverflow.comIn this JDO, why is
I would prefer to write this more concise syntax if possible?
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4. Why "import javax.jdo.* "caused error? stackoverflow.comI have a class uses the following lines, it works fine in a Google App Engine project:
But when I included this class in another project, it ... |
5. Avoid DataNucleus joins? stackoverflow.comI'm experimenting with moving a JDBC webapp to JDO DataNucleus 2.1.1. Assume I have some classes that look something like this: public class Position { private Integer id; private String title; } public class Employee { private Integer ... |
6. Prepared statement parameter not being set in DataNucleus stackoverflow.comI'm trying to insert an Employee object into the database using DataNucleus 2.1.1, but the foreign-key Position parameter is not being set before the "insert" prepared statement is executed. What ... |
7. Is there a flat files JDO implementation? stackoverflow.comI have a simple app I'd like to use JDO. But I don't want to use any DB back, just regular file system. Before jdo, I had this class it serializes ... |
8. Is there an acceptable way to keep these layers/dependencies separate? stackoverflow.comI am currently struggling with whether or not I've achieved a good level of separation, or if I've missed the point somewhere, as I am relatively new to learning the disciplined ... |
9. Datanucleus JDO setting fields to null stackoverflow.comIn an attempt to find another issue, my tests came up with the following bit of code.
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10. html value of select option to jdo object stackoverflow.comI'm doing an query and getting a list of albums names from my JDO, they are then displayed in a selection menu in html like this
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11. How to return the actual type rather than an Object type from a method that can work for multiple Class types? stackoverflow.comIs there any way to modify the |
12. Disable auto scanning for JDO classes datanucleus exploded war stackoverflow.comWhen I deploy an exploded war file datanucleus fails with following error Caused by: org.datanucleus.exceptions.ClassNotResolvedException: Class "JDOTutorial.war.WEB-INF.classes.com.blogspot.jkook.daytrader.jdo.QJDOOrderData" was not found in the CLASSPATHThis does not occur when war is ... |
13. DataNucleus ClassNotPersistableException stackoverflow.comI hesitate to ask this, because I know it's been pointed out to others that it's a stupid question and that the exception's message is more than clear. And still, I ... |
14. JDO: How does PersistenceManager.refresh(Object) deal with dirty fields? stackoverflow.comI have an object |
15. JDO L2 Cache SingleFieldIdentity stackoverflow.comI'm trying to enable L2 cache in my JDO installation. Spring configuration is:
so prefix is default "datanucleus".
The problem is that any object with SingleFieldIdentity is represented by key "datanucleus###" ... |
16. JDO - models mapping stackoverflow.comI have 3 models: - 2 custom: Event, UserEvent - com.google.appengine.api.users.User User can be registered to many events, and Event can hold many Users. UserEvent has to hold information about events and additional ... |
17. Java Cookbook : JDO coderanch.comAs has been mentioned, JDO is one of several new persistence mechanisms based on "Object Relational Mapping" (another is Hibernate). The basic idea is to make your life easier: instead of writing a whole blob of SQL, you can just deal in *objects*, and have them stored into and loaded from the database (a bit like Entity EJB, but a lot ... |
18. Who can give me some message about JDO ??? coderanch.comO'Reilly has a new book on the very subject: Java Data Objects by David Jordan and Craig Russell. ISBN: 0-596-00276-9 APress has one also, called Using and Understanding Java Data Objects By David Ezzio ISBN: 1-59059-043-0 Haven't checked them out, yet, but I plan to check them both out at some point. Hope this helps. |
19. JDO forums.oracle.comHello Colleagues I recently downloaded db40 which I mastered quite easily to create a database of persistent objects. Unfortunately to use this in the capacity which I wish I will have to spend rather a lot of money which I cannot afford to do. I am attracted to an objects database as I wish to embed my database in the application ... |
20. JDO Maps problem forums.oracle.com |
21. JDO What a shame forums.oracle.com |