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66

Entity object parameter in Explorer parameter

Hello, I cannot set an entity object in a parameter for a bulk update in the explorer query execution. The format Entity#001 works well for the parameter in the WHERE clause, but it doesn't work in the SET clause. For example, in the query: UPDATE Account dep SET dep.status=:a WHERE dep.status=:b
66

JPQL: Update fails using external object param

Let's suppose we have two objects and one is the key to another: Language{id:Integer,language: String} Book{id:Integer, title: String, language: Language} This select works: SELECT b from Book b where b.language.language="en" // it returns some records But when I use the same condition
65

ObjectDB JDBC to Object compiler

ObjectDB JDBC to Object compiler
65

can we use objected with ehcahce?

can we use objected with ehcahce?
65

Query for objects persisted within the same transaction

Query for objects persisted within the same transaction
65

CAP theorem and object DB

CAP theorem and object DB
13

criteria api / embedded objects / where order

Dear Support Team Changing objectdb from version 2.7.4 to version 2.8.1 I found, that query against embedded objects doesn't work as expected and the formerly green UnitTest (Version 2.7.4) turns red (Version 2.8.1). For what I thought I realized is, that the version 2.8.1 was sensitive
13

Shared (L2) Entity Cache

Every EntityManager owns a persistence context, which is a collection of all the entity objects ... an entity object that is already managed by the EntityManager returns the existing instance from the persistence context, rather than a newly instantiated entity object. The scope of the persistence context
13

GROUP BY and HAVING clauses

properties of generated groups instead of individual objects and fields. The position of a GROUP BY ... clause. When a GROUP BY clause exists in a JPQL query, database objects (or tuples of database objects ... over all the Country objects in the database. The GROUP BY clause groups these Country objects by
1

javax.jdo.JDOEntityManager

for each object that failed the consistency check. No datastore resources acquired during the execution ... to the database will not be persisted. Since: JPA 1.0 boolean contains(Object entity) Check ... - a criteria query object Returns: the new query instance Throws: IllegalArgumentException - if the criteria

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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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