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Annotations
@PersistenceCapable @PersistenceAware @Cacheable @EmbeddedOnly @Inheritance @Discriminator @DatastoreIdentity @Version @PrimaryKey @FetchPlans @FetchPlan @FetchGroups @... -
JDO v JPA
There are several competing persistence technologies available for Java. Two of these are “standardised” (via the JCP). When developing your application you need to choose the mos... -
Integration with Hive Metastore
Requirements Default Behavior Related Configurations Remote Metastore Database Remote Metastore Server Activate Configurations Via kyuubi-defaults.conf Via hive-site.xml Via... -
Attach-Detach
Detach All On Commit Copy On Attach Serialization of Detachable classes JDO provides an interface to the persistence of objects. JDO 1.0 didn’t provide a way of taking an objec... -
JDOQL
JDOQL Single-String JDOQL Accessing Fields Data types : literals Operators precedence Concatenation Expressions Example 1 - Use of Explicit Parameters Example 2 - Use of Impl... -
Fetch Plan/Groups
Default Fetch Group Named Fetch Groups Dynamic Fetch Groups Fetch Depth Fetch Size When an object is retrieved from the datastore by JDO typically not all fields are retrieve... -
SQL
Setting candidate class Unique results Defining a result type Parameters As we have described earlier, JDO allows access to many query languages to give the user full flexibil... -
FAQ
What is JDO? I’d like to find out more about the project and possibly contribute. What do I do next? Where is the mailing list, and how can I subscribe? Does this project use a ... -
Getting Started
Using JDO requires several components that work together: a database that stores your data persistently an application that operates through the JDO layers on the database a JDO... -
Object Retrieval
Retrieve an object from its identity Retrieve an object based on its Extent Retrieve an object based on a query criteria Any application will require access to persisted object...