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14

SELECT clause (JPQL / Criteria API)

, depending on the size of the query result list and other factors. SELECT in Criteria Queries ... above. The behavior of the multiselect method depends on the query result type (as set when CriteriaQuery
14

Deleting JPA Entity Objects

up dependent objects (e.g. Address) that should not exist without a reference from an owner object (e ... of orphan removal this feature should only be enabled for fields that hold private non shared dependent
14

Running JPA Queries

might fail, depending on the database content. For example, the following query is expected to return ... of this assumption depends on the content of the database. If the database contains multiple Country objects
14

Database Explorer

, which is located in the bin directory of ObjectDB. It depends on the objectdb.jar file. You can run ... that has to be set. The functionality of the Edit > Delete command depends on the context. Deleting
10

JPA Queries

only at runtime (e.g. depending on which fields are filled by a user in a form) can be done by
2

Getting Started with JPA and Eclipse

zip file. The distribution zip contains everything necessary (no external dependencies
2

Step 1: Install BIRT and ObjectDB Driver

is more complicated because of BIRT dependencies and is not covered here). To update an existing
1

[ODB1] Chapter 6 - Persistent Objects

to deletePersistentAll(...), which is also a method of PersistenceManager. Deleting Dependent Objects ... dependent objects is to implement the InstanceCallback interface, as demonstrated in section 3.4 ... automatically when their containing object is deleted. When possible, it is useful to define dependent
1

[ODB1] Chapter 7 - JDOQL Queries

is dependent on this and pet is dependent on child, the three subexpressions must be ordered as shown above, in
1

javax.jdo.annotations.Persistent

Default value: "" Since: JDO 2.1 String dependent Whether related object(s) of this member are dependent and so deleted when this object is deleted. Whether related object(s) of this member are dependent and so deleted when this object is deleted. Returns: whether the related object(s

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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