About JDO

api-jdo

JDO Reference (JavaDoc)

Java/JDO API Reference (based on the JDO 2.2 JavaDoc)... contains the API documentation (similar to JavaDoc) of JDO 2.2. The content is derived from the original JDO documentation with some additions and notes. The most basic JDO ...

 
api-jdo

javax.jdo.Constants

Constant values used in JDO.(Interface of JDO)

 
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What is the Java Data Objects (JDO)?

The Java Data Objects (JDO) is another standard for accessing persistent data in databases, using ... which is designated to be used with relational databases, JDO is designated to be used with both relational and object databases. JDO is supported by many object databases, including ObjectDB, and it is ...

 
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Which API should I use - JPA or JDO?

... the Java Persistence API (JPA) or the Java Data Objects (JDO) API. Both share similar architecture, design and abilities. When to ... use JPA as the primary API, and if necessary, switch to JDO as a secondary API for special additional features that are supported only ...

 
api-jdo

JDO Annotations

JDO defines dozens of annotations that can be divided into the following groups: JDO Annotations for Classes JDO Annotations for Fields JDO Annotations for Index Definition ...

 
api-jdo

javax.jdo.PersistenceManager

PersistenceManager is the primary interface for JDO-aware application components.(Interface of JDO)

 
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ObjectDB 2 JDO Manual

The new ObjectDB Manual describes how to use ObjectDB 2 with JPA. An additional manual that focuses on using ObjectDB 2 with JDO can help JDO users. But since writing a new manual and then maintaining two similar manuals, one for JPA and the other for JDO requires sufficient effort, this will be done only if there is sufficient demand.  ... An additional manual that focuses on using ObjectDB 2 with JDO can help JDO users. But since writing a new manual and then maintaining two similar ...

 
api-jdo

javax.jdo.spi.StateManager

This interface is the point of contact between managed instances of PersistenceCapable classes and the JDO implementation.(Interface of JDO)

 
manual

Index Definition

Describes how to define indexes in JPA entity classes and explains how indexes are used in JPQL queries.... not define a standard method for declaring indexes, but JDO does. The following entity definition uses JDO’s @Index javax.jdo.annotations.Index JDO annotation ...

 
api-jdo

JDO Annotations for Index Definition

... to define indexes on persistent fields: javax.jdo.annotations.Index javax.jdo.annotations.Indices javax.jdo.annotations.Unique javax.jdo.annotations.Uniques The ...