About generated

manual

GROUP BY and HAVING clauses

Explains how to use the GROUP BY and HAVING clauses in a JPA/JPQL query.... A JPQL query with a GROUP BY clause returns properties of generated groups instead of individual objects and fields. The position ... database objects (or tuples of database objects) that are generated by the FROM clause iteration and pass the WHERE clause filtering (if ...

 
api-jdo

Key.generateForeignKey

Generate or assume a foreign key constraint exists on the column or columns associated with this join.(Annotation Element of javax.jdo.annotations.Key)

 
api-jdo

Join.generateForeignKey

Generate or assume a foreign key constraint exists on the column or columns associated with this join.(Annotation Element of javax.jdo.annotations.Join)

 
api-jdo

Value.generateForeignKey

Generate or assume a foreign key constraint exists on the column or columns associated with this join.(Annotation Element of javax.jdo.annotations.Value)

 
api-jdo

DatastoreIdentity.strategy

Strategy to use when generating datastore identities(Annotation Element of javax.jdo.annotations.DatastoreIdentity)

 
api-jpa

javax.persistence.UniqueConstraint

Specifies that a unique constraint is to be included in the generated DDL for a primary or secondary table.(Annotation of JPA)

 
api-jdo

javax.jdo.annotations.IdGeneratorStrategy

Enumeration of the id generator strategy values.(Enum of JDO)

 
api-jpa

TableGenerator.initialValue

(Optional) The initial value to be used to initialize the column that stores the last value generated.(Annotation Element of javax.persistence.TableGenerator)

 
forum_thread

Cascade.ALL with LAZY fetchtype does not clean up all references on remove

Hello, I have a tree of entity classes that reference others using Cascade.ALL in combination with FetchType.LAZY. If I now delete a root entity using EntityManager.remove all leaf nodes will not be deleted. This only applies to the leaf nodes. If I add an additional the behaviour changes so that these new leafes will not be deleted. I created a small test case which can be downloaded at http://www.objectdb.com/database/support/665 #1 2017-11-21 11:19 Hello, I have a tree of entity classes that reference others using Cascade.ALL in combination with FetchT ...

 
issue

[ObjectDB 2.2.5_02] Unexpected exception (Error 990) com.objectdb.o.InternalException: java.lang.NullPointerException: null

reporting issue as requested  ... [ObjectDB 2.2.5_02] Unexpected exception (Error 990) Generated by Java HotSpot(TM) Client VM 1.6.0_17 (on Windows XP 5.1). Please ... my code (generated by netbeans) for findEntities() is as follows: public ...