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Manual
6

Database Transaction Replayer

on a different physical device by setting the path attribute in the configuration. The recording directory
Manual
6

FROM clause (JPQL / Criteria API)

, NEW, NOT, NULL, NULLIF, OBJECT, OF, OR, ORDER, OUTER, POSITION, SELECT, SET, SIZE, SOME, SQRT
JDO Doc
6

JDO Annotations for Classes

JDO supports two modes of persistable classes that can be set by the following annotations: Non persistable classes that should be enhanced (because of accessing persistent fields of other classes directly) can be marked with: The identity mode of persistence capable classes can be specified by using:
JDO Doc
6

JDO Annotations for Fields

The way a field of a persistable class is managed by JDO can be set by the following annotations and enum types:
JPA Doc
6

JPA Annotations for Classes

JPA defines three types of persistable classes which are set by the following annotations: Chapter 2 of the ObjectDB manual explains these annotations in detail. Entity and mapped super classes can be further configured by annotations that specify cache preferences and lifecycle event listener
JPA Doc
6

JPA Annotations for Fields

The way a field of a persistable class is managed by JPA can be set by the following annotations: Additional annotations (and enum) are designated for enum fields: Other additional annotations (and enum) are designated for date and calendar fields: Chapter 2 of the ObjectDB manual explains how to use all the above annotations.
JPA Doc
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JPA Miscellaneous

This section contains miscellaneous JPA types. The PersistenceUtil and PersistenceUnitUtil interfaces provide general utility methods: The Cache interface and the CacheRetrieveMode and CacheStoreMode enum types serve in managing the EntityManagerFactory's shared (level 2) cache: Other enum types are provided for setting of various JPA operations:
Manual
6

JPA Persistence Unit

A JPA Persistence Unit is a logical grouping of user defined persistable classes (entity classes, embeddable classes and mapped superclasses) with related settings. Defining a persistence unit is optional when using ObjectDB, but required by JPA. persistence.xml Persistence units are defined in
Manual
6

Online Backup

Backup Target A custom backup root directory can be specified by setting the target parameter before
Manual
6

Running JPA Queries

field in all the Country instances to zero: int count = em.createQuery("UPDATE Country SET area = 0