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Warmup ( preLoad all table rows into memory )

. The subject of the thread should match the content, and other topics should be moved to additional threads. support Support

Updating existing persistence entries

polymorphism and finds the correspondent row in the DB by the matching and unique ID field

How does objectdb deal with conflicting schemas?

Suppose we have an objectdb network server with multiple clients connecting to it. Some clients have the latest object schema, matching that of the server. But some have an older schema, not using fields that have since been added. Will this work? FastModel Ben Schreiber This is strictly forbidden. You must have the same version of classes everywhere. support Support

OR not working with isNull

Given the following: Predicate isOwnedByUser = cb.equal(root.get("owner").get("id"), userId); Predicate ownerIsNull = cb.isNull(root.get("owner")); Predicate ownerMatchesOrIsNull = cb.or(ownerIsNull, isOwnedByUser); The isNull predicate will only match records when NOT inside the OR predicate

Help with 'not like/lower' query

, and the lower case email does NOT match the parameter :p2 The bind is as follows: com.x.y.z.services

JPA JPQL WHERE clause for IN :variable not working if variable is a list of Enums

);     query.setParameter("enumField2", MyEnumType.VALUE2); Then the matching objects are returned. I

ObjectDB Unable to process 1.6 L records.

Manoj Kumar Maharana The stack trace in the log file does not seem to match version 2.8.2

Embedded Entity in EmbeddedId not persisted. Error 631 at select.

:31.465 [main] DEBUG org.hibernate.jpa.HibernatePersistenceProvider - Found no matching persistence

objectdb explorer in ver 2.2 and 1.0

2 was written almost from scratch and the old Explorer does not match the new code base

ObjectDB 2.7.6

a constraint. Changed to-one mapped-by (inverse) relationship with multiple matching to always take the first

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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