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Manual
229

UPDATE SET Queries in JPA/JPQL

Existing entity objects can be updated, as explained in chapter 2, by: Retrieving the entity objects into an EntityManager. Updating the relevant entity object fields within an active transaction. Applying changes to the database by calling the commit method. JPQL UPDATE queries provide
Manual
213

Updating JPA Entity Objects

persistence, which means that changes are detected and handled automatically. Transparent Update ... (); The entity object is physically updated in the database when the transaction is committed. If the transaction is rolled back and not committed the update is discarded. On commit the persist operation
Manual
155

Schema Update

ObjectDB tries to apply the specified schema updates every time a database is opened. When using client ... side where the up to date classes are located. The following element demonstrates the supported schema update
Tutorial
64

Step 1: Install BIRT and ObjectDB Driver

for Java EE Developers. Update your existing Eclipse IDE for Java EE Developers environment by installing the BIRT plugins using the Eclipse Update Manager (updating Eclipse IDE with no Java EE support is more complicated because of BIRT dependencies and is not covered here). To update an existing
JPA Doc
46

Column.updatable

Annotation Element javax.persistence.Column boolean updatable (Optional) Whether the column is included in SQL UPDATE statements generated by the persistence provider. Default value: true Since: JPA 1.0
JPA Doc
46

JoinColumn.updatable

Annotation Element javax.persistence.JoinColumn boolean updatable (Optional) Whether the column is included in SQL UPDATE statements generated by the persistence provider. Default value: true Since: JPA 1.0
JPA Doc
46

MapKeyColumn.updatable

Annotation Element javax.persistence.MapKeyColumn boolean updatable (Optional) Whether the column is included in SQL UPDATE statements generated by the persistence provider. Default value: true Since: JPA 2.0
JPA Doc
46

MapKeyJoinColumn.updatable

Annotation Element javax.persistence.MapKeyJoinColumn boolean updatable (Optional) Whether the column is included in SQL UPDATE statements generated by the persistence provider. Default value: true Since: JPA 2.0
JPA Doc
46

OrderColumn.updatable

Annotation Element javax.persistence.OrderColumn boolean updatable (Optional) Whether the column is included in SQL UPDATE statements generated by the persistence provider. Default value: true Since: JPA 2.0
Manual
42

Chapter 3 - Using JPA

Explains how to store, retrieve, update and delete entity objects using JPA.