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101

Entity Management Config questions

Entity Management Config questions
18

CRUD Database Operations with JPA

a managed entity) by the persist method. The new Point objects are physically stored in the database ... and Deleting Entities JPA refers to entity objects that are associated with an EntityManager as 'managed'. A newly constructed entity object becomes managed by an EntityManager when the persist method
17

Detached Entity Objects

Detached entity objects are objects in a special state in which they are not managed by any EntityManager but still represent objects in the database. Compared to managed entity objects, detached ... the database unless modified detached objects are merged back into an EntityManager to become managed
17

JPA Metamodel API

details on managed classes and persistent fields and properties, similarly to the ability that Java ... (which are referred to as managed types) in the persistent object model. Three methods can be used to retrieve sets of types: // Get all the managed classes: // (entity classes, embeddable classes
17

javax.persistence.metamodel.ManagedType

(String name) Return the attribute of the managed type that corresponds to the specified name. Return the attribute of the managed type that corresponds to the specified name. Parameters: name - the name ... - if attribute of the given name is not present in the managed type Since: JPA 2.0 Set< Attribute
17

javax.persistence.metamodel.EntityType

Attribute<?,?> getAttribute(String name) Return the attribute of the managed type that corresponds to the specified name. Return the attribute of the managed type that corresponds to the specified ... Throws: IllegalArgumentException - if attribute of the given name is not present in the managed type
1

[ODB1] Chapter 9 - ObjectDB Explorer

ObjectDB Explorer is a visual tool for managing ObjectDB databases. You can use the Explorer ... existing database files, but it can also serve as a basic file manager. Using the toolbar ... this dialog to create new directories and database files. Similarly, in the server edition you can manage
1

[ODB1] Chapter 5 - JDO Connections

that every connection consumes. Database connections are managed in JDO by the javax.jdo ... is obtained. To improve efficiency, a PersistenceManagerFactory instance may manage a pool of free PersistenceManager instances. From the developer's point of view, connection pool management
1

[ODB1] Chapter 8 - ObjectDB Server

An ObjectDB server can manage one or more databases. Databases that are managed by a server ... effect. Running the Server on Unix On Unix you can also use a shell script to run and manage ... to manage the server (stop, restart and start), and to exit the application. 8.2 Single User Server
1

javax.jdo.JDOEntityManager

the persistence context, causing all managed entities to become detached. Clear the persistence context, causing all managed entities to become detached. Changes made to entities that have not been flushed ... if the instance is a managed entity instance belonging to the current persistence context. Check

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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