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Manual
17

JPA Query Structure (JPQL / Criteria)

(update and delete queries have a slightly different form). The other JPQL clauses, WHERE, GROUP BY, HAVING and ORDER BY are optional. The structure of JPQL DELETE and UPDATE queries is simpler: DELETE
Manual
14

Chapter 1 - Quick Tour

ObjectDB databases and perform basic CRUD operations (Create/Store, Retrieve, Update and Delete ... , retrieving, updating and deleting Point objects. To run the sample program of this chapter in
Manual
14

Database Connection using JPA

. drop - for deleting any existing database content (useful for tests). To connect to an ObjectDB server ... ); EntityTransaction Operations that affect the content of the database (store, update, delete
Manual
14

Database Management Settings

and deleted by ObjectDB when the database is closed. The name of the recovery file is based on the name ... in tests). The content of these temporary databases is deleted when using the drop url connection
Manual
14

Locking in JPA

that has to be updated or deleted is checked. An exception is thrown if it is found out that an update ... deleted, and compares the version number of that object in the database to the version number
Manual
14

SELECT clause (JPQL / Criteria API)

objects, transparent update detection, support for delete, etc. Query results are not limited to entity ... efficiently. They are less productive with operations that update or delete entity objects, in
JDO Doc
12

javax.jdo.Query

() Deletes all the instances of the candidate class that pass the filter. Deletes all the instances ... that were deleted, specifically not including the number of dependent and embedded instances. Dirty ... life cycle changes as if deletePersistent were called on them. Specifically, if the class of deleted
Manual
10

Database Doctor

over FTP in ASCII mode (BINARY mode should be used). Deleting an ObjectDB database recovery file or
Manual
10

Database Schema Evolution

Modifications to entity classes that do not change their persistent field definitions (their schema) are transparent to ObjectDB. This includes adding, removing and modifying constructors, methods and non persistent fields. However, additions, deletions and modifications to the persistent fields
Manual
10

FROM clause (JPQL / Criteria API)

_TIMESTAMP,DELETE, DESC, DISTINCT, ELSE, EMPTY, END, ENTRY, ESCAPE, EXISTS, FALSE, FETCH,FROM, GROUP, HAVING