About bulk update

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Manual
239

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
88

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
63

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
59

What is new in ObjectDB 2.0?

trips in JDO bulk operations (e.g. refreshAll). JDO Enhancer supports enhancing of complete JAR files.
Forum
40

Bulk update of embedded entities in linked list

Hi, I'm trying to do a bulk update of a column in an embedded entity, but I end up with a query ... . Example:                 int updateCount = em.createQuery(                     "UPDATE EntityA ... the "unexpected query token" exception. How can I do update statements like that? Kind Regards
Forum
36

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
27

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
27

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 ... when the transaction is committed. Updating an existing database object is similar
Manual
24

DELETE Queries in JPA/JPQL

Explains how to apply server side bulk delete using a JPA/JPQL query.
JPA Doc
19

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