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Manual
218

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
79

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
57

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
Result
52

What is new in ObjectDB 2.0?

trips in JDO bulk operations (e.g. refreshAll). JDO Enhancer supports enhancing of complete JAR files.
Forum
34

Bulk Delete and Update - best practice?

. The attachment also contains an update test which has similar memory problems. I'm running both tests with the default objectdb.conf. In general is an UPDATE/DELETE statement the most efficient way to update/remove a large number of objects? I've had success with the "drop" keyword in
Tutorial
24

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
Manual
23

DELETE Queries in JPA/JPQL

Explains how to apply server side bulk delete using a JPA/JPQL query.
Manual
23

CRUD Database Operations with JPA

it to store, retrieve, update and delete database objects. Storing New Entity Objects The following ... is a very powerful query language and chapter 4 of this manual describes it in detail. Updating and Deleting ... when the transaction is committed. Updating an existing database object is similar. You have to obtain
JPA Doc
17

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
17

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