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Apache License, Version 2.0, January 2004

mean the work of authorship, whether in Source or Object form, made available under the License, as indicated by a copyright notice that is included in or attached to the work (an example is provided in the Appendix below). "Derivative Works" shall mean any work, whether in Source or Object form
Manual
12

Database Schema Evolution

of an entity class are detected by ObjectDB. New entity objects have to be stored in the new class schema, and old entity objects, which were stored previously in the old class schema, have to be converted to the new schema. Note: In client-server mode the ObjectDB server must be restarted
Manual
12

JPA Criteria API Queries

in a form that contains many optional fields - is expected to be cleaner when using the JPA ... operations. String based JPQL queries and JPA criteria based queries are equivalent in power and in ... (both methods are equivalent). In the example above a CriteriaQuery instance is created for representing
Manual
12

Working with JPA Entity Objects

Entity objects are in-memory instances of entity classes (persistable user defined classes), which can represent physical objects in the database. Managing an ObjectDB Object Database using JPA ... : New, Managed, Removed and Detached. When an entity object is initially created its state is New.  In
Manual
12

JPA / JDO Class Enhancer

to be enhanced. Enhancement improves efficiency in three ways: Enhanced code enables efficient ... explained in the chapter 3). This is done by adding special code to enhanced classes that automatically ... . Command Line Enhancement ObjectDB Enhancer is a Java console application. It is contained in the objectdb
Manual
12

JPA Primary Key

Every entity object that is stored in the database has a primary key. Once assigned, the primary key cannot be modified. It represents the entity object as long as it exists in the database. As ... that is absent from other object oriented databases. Entity Identification Every entity object in
Manual
11

JPA Query API

Queries are represented in JPA 2 by two interfaces - the old Query interface, which was the only interface available for representing queries in JPA 1, and the new TypedQuery interface that was introduced in JPA 2. The TypedQuery interface extends the Query interface. In JPA 2 the Query interface
Forum
11

IN expression in a Criteria Query

is with Criteria Language. This code: In inExpression = cb.in(root.get(Computer ... supported by ObjectDB. They are listed in the issue tracking system, and unfortunately subqueries ... , please provide the complete query string (you should be able to see it in the log, if you enable logging as
Manual
11

Database Management Settings

which are relevant on the server side and in embedded mode. The default configuration file contains the following ... ). The page attribute specifies the size of a page in a database file. The default of 2KB is appropriate ... . sync=false is much faster in writing data to a database, but true might be safer in production. By
Manual
11

JPA Lifecycle Events

(added to the EntityManager). @PostPersist - after storing a new entity in the database (during commit or ... - when an entity is identified as modified by the EntityManager. @PostUpdate - after updating an entity in the database (during commit or flush). @PreRemove - when an entity is marked for removal in