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ObjectDB Object Database Features [2018-10-27]

entity classes per database file. Up to 2,147,483,648 indices per database file ... . Class hierarchy changes are handled automatically. New added fields are handled automatically ... fields up and down in the class hierarchy is transparent. Support for renaming types, fields
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ObjectDB Object Database Features

file size up to 128 TB (= 131,072 GB = 134,217,728 MB). Up to 2,147,483,648 entity classes ... deployment). Schema Evolution Fully automatic schema evolution and type versioning. Class hierarchy ... the class hierarchy is transparent. Support for renaming types, fields and properties. Object Model
Tutorial
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Step 3: Define an EJB Session Bean

Operations on the database will be performed by an instance of a session bean (EJB) class ... ) > Session Bean and clicking Next. Enter GuestDao as the EJB class name - use exactly that case sensitive class name. The Java package name should be guest. Click Finish to create the new session bean (EJB
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Step 3: Define a Spring DAO Component

) that we will define in this step as a Spring MVC component: Open the [New Java Class] dialog box by right ... > Java Class.... Enter GuestDao as the class name - use exactly that case sensitive class name. The Package should be guest. Click Finish to create the new DAO Spring component class. Now replace
Manual
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Database Schema Evolution

Modifications to entity classes that do not change their persistent field definitions (their schema ... 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
Tutorial
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Step 3: Define a Spring DAO Component

) that we will define in this step as a Spring MVC component: Open the [New Java Class] dialog box by right clicking the guest package node (in the [Package Explorer] window) and selecting New > Class. The package name should be guest. Enter GuestDao as the class name - use exactly that case sensitive class
Manual
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Entity Management Settings

JRE) or above. The reflection attribute specifies how non enhanced classes are handled. ObjectDB can manage non enhanced classes by using reflection at the cost of performance. The possible values of the reflection attribute represent different policies: "error" - all persistable classes
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Storing JPA Entity Objects

an instance of the Employee entity class in the database: Employee employee = new Employee("Samuel ... of an entity class. Only instances of entity classes can be stored in the database independently. Objects ... ().commit(); Instances of persistable types other than entity classes are automatically stored
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Posting to ObjectDB Website - Important Instructions

. Whenever possible: Use a single Java file with one main class + static inner classes for entity / embeddable classes. Avoid dependency on external libraries. Use a console application with a main method ... ; import java.util.*; import javax.persistence.*; public final class MyTestCase {     public
Manual
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Literals in JPQL and Criteria Queries

Entity type literals represent entity types in JPQL, similar to the way that java.lang.Class instances ... retrieval by type. In JPQL an entity type literal is written simply as the name of the entity class (e.g. Country). That is equivalent to Country.class in Java code. Notice that the name of the entity