datanucleus
Avoid DataNucleus joins?
I\'m experimenting with moving a JDBC webapp to JDO DataNucleus 2.1.1. Assume I have some classes that look something like this:[详细]
2023-01-06 22:52 分类：问答Appengine datastore phantom entity - inconsistent state?
Getting a weird error on java appengine code that used to work fine (nothing has changed but the data in the datastore).[详细]
2023-01-03 13:03 分类：问答Are there tools to generate a ddl schema from JDO annotated pojos?
Perhaps i\'m wandering down the wrong path - I\'m looking for a tool like hbm2ddl. I currently have domain model (pojos with JDO annotations) - I need to setup t开发者_如何学Pythonhe database.[详细]
2023-01-02 15:51 分类：问答How to iterate JPA collections in Google App engine
I use Google App Engine with datanucleus and JPA. I\'m having a real hard time grasping how I\'m supposed to read stuff from data store and pass it to JSP. If I load a list of POJOs with entitymanager[详细]
2023-01-01 22:40 分类：问答Declarative JDOQL vs Single-String JDOQL : performance
When querying with JDOQL is there a performance difference between using the declarative version a开发者_Go百科nd the Single-String version:[详细]
2023-01-01 03:24 分类：问答How can I turn an Eclipse GWT/GAE app into an Eclipse Tomcat/mySQL app?
Sorry in advance for the long post but the problem I am facing here is quite crucial for me, so here we go...[详细]
2022-12-31 10:41 分类：问答Java: JDOQL startsWith query, case sensitive
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.[详细]
2022-12-30 16:42 分类：问答Datanucleus 2.x AND Eclipse RCP 3.4
ANYONE using Datanucleus (http://www.datanucleus.org/) with ECLIPSE RCP? Eclipse DOES NOT recogni开发者_运维问答ze Datanucleus has a PLUGIN, with versions of DN newer than 1.1.0m3 :-([详细]
2022-12-25 20:21 分类：问答Maven building for GoogleAppEngine, forced to include JDO libraries?
I\'m trying to build my application for GoogleAppEngine using maven. I\'ve added the following to my pom which should \"enhance\" my classes after building, as suggested on the DataNucleus documentati[详细]
2022-12-25 19:14 分类：问答Is there any advantage for using a library other than Hibernate for JPA?
I\'ve been using JPA for some time now and been in projects where we\'ve used both Hibernate Annotations and Toplink Essentials.[详细]
2022-12-23 18:51 分类：问答
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