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Questions tagged [datanucleus]

DataNucleus AccessPlatform is an implementation of the JDO and JPA API specifications for Java object persistence, as well as providing a REST API. It is fully standards-compliant, and supports persistence to RDBMS, ODBMS, documents (XML, Excel, ODF), web-based (JSON, Amazon S3, GoogleStorage), map-based (HBase, Cassandra), document-based (MongoDB), graph-based (Neo4j) as well as some others (LDAP).

DataNucleus AccessPlatform is an implementation of the JDO and JPA API specifications for Java object persistence, as well as providing a REST API. It is fully standards-compliant, and supports persistence to RDBMS, ODBMS, Documents (XML, Excel, ODF), Web-based (JSON, Amazon S3, GoogleStorage), Map-stores (HBase, Cassandra), document-based (MongoDB), graph-based (Nep4j) as well as some others (LDAP).

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How to enable logging for a Datanucleus application based on Maven?

My question is pretty straightforward. Given the following POM: org.datanucleus maven-datanucleus-plugin …
Ariel Chelsău
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Could JDO talk to a SOAP service?

I've used JPA for a while. Having an entityManager that performs your SQL operations is great. I've noticed that JDO (DataNucleous) goes beyond JPA and brings persistence to other datasources, XML among those Not sure if I grasped the concept…
javaNoober
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Servlet using Datanucleus JDO can't find MySQL Driver

I'm trying to get JDO working within a Servlet; just a simple, basic Servlet. I know that a Servlet can connect to my db because a non-JDO servlet does it fine, and prints out data from the db (the following is at the start of a simple Servlet): …
Kenny
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Per-Data store inheritance strategies in DataNucleus JDO?

I interface with two data stores, one of them is RDMS and the other one is LDAP. What I want to do is to have a hierarchy persisted using "superclass-table" in the RDBMS and "complete-table" in LDAP. Is such a thing possible? That is, can you…
Gerasimos Farantatos
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Guice persistence with JDO - weird NPE

I am using Guice with JDO and Datanucleus in my desktop app. I am facing a NPE that I can't fix, so I hope someone can help me :) I am using properly configured H2 db, with schema created and all my classes are nicely enhanced, so it's not that.…
Paul
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Datanucleus/JDO InstanceLifecycleListener for makeTransient (or LOAD by query)

I have a problem that i need to solve using DATANUCLEUS (JDO), maybe a limitation of something that was not covered by JDO specs. I need to catch when objects are loaded in a Query - there is NO InstanceLifecycleListener for this! (Queried objects…
marcolopes
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How to remove discriminators from where clause in request?

I have a parent class declared like that: @PersistenceCapable(table = "S_ROT_CLASS") @Inheritance(strategy = InheritanceStrategy.NEW_TABLE) @Discriminator(strategy = DiscriminatorStrategy.VALUE_MAP, column = "CLASS_ID", value =…
padpanik
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DataNucleus on AppEngine not returning any results

I just about tried everything, but I am not receiving any results when running a simple SQL query running on the following target platform: Google AppEngine + Google Cloud SQL datastore using DataNucleus (all on Google Cloud Platform). I have…
Helmuth Stockmann
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JPA does not return any data from CloudSQL

I have project based on maven for deployment on GoogleAppEngine. I have local MySQL DB (for development) and remote CloudSQL DB (for production) My code is based on google github Data inside CloudSQL and MySQL are identical. I have a problem when…
Ajvo
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datanucleus - Attempting to illegally override the primary-key

I am using datanucleus JDO API for persisting objects. my orm file looks like this:
YesR
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Google app engine JDOQL get all entries starting with a letter

I am trying to write a google app engine JDO query for selecting all users who's name starts with "a". I saw a method for doing this called startsWith() in data nucleus documentation. But it is not working in google app engine. Is there any work…
Sumodh S
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Datanucleus: embedded update object creates a new one

I'm having issues while trying to update objects with datanucleus (JDO). The problem instead of updating an existing object, it creates new ones along with new embedded data. This is my…
Daniel Pierre Bonhaure Falcón
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Issue with using the Google Datastore query console

I have been implementing an app using appengine and am also using JDO. In one of my entity classes I have a int property: @Extension(vendorName="datanucleus", key="gae.unindexed", value="true") @Persistent int numberToStore; I was able to store…
user3670859
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Datanucleus 2.x AND Eclipse RCP 3.4

ANYONE using Datanucleus (http://www.datanucleus.org/) with ECLIPSE RCP? Eclipse DOES NOT recognize Datanucleus has a PLUGIN, with versions of DN newer than 1.1.0m3 :-( The JARS i currently use, and the LAST ONES being recognized has plugins by…
marcolopes
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How to create a MySQL database for DataNucleus

I need to setup a MySQL database for a DataNucleus properties file: javax.jdo.PersistenceManagerFactoryClass=org.datanucleus.api.jdo.JDOPersistenceManagerFactory datanucleus.metadata.validate=false # Enable these lines if persisting to…
user3147232
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