Fast Object Database for Java - with JPA/JDO support

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15

Defining a JPA Entity Class

(annotated) as having the ability to represent objects in the database. Conceptually this is similar to serializable classes, which are marked as having the ability to be serialized. The Point Entity
15

JPA Criteria API Queries

, construct). FROM clause (from, join, fetch). WHERE clause (where). GROUP BY / HAVING clauses (groupBy, having, count, sum, avg, min, max, ...). ORDER BY clause (orderBy, Order, asc, desc). The links
10

ORDER BY clause (JPQL / Criteria API)

WHERE 'Europe' MEMBER OF c.continents GROUP BY c.currency HAVING COUNT(c) > 1 ORDER BY c.currency
10

FROM clause (JPQL / Criteria API)

,DELETE, DESC, DISTINCT, ELSE, EMPTY, END, ENTRY, ESCAPE, EXISTS, FALSE, FETCH,FROM, GROUP, HAVING
10

UPDATE SET Queries in JPA/JPQL

queries cannot include the GROUP BY, HAVING and ORDER BY clauses, but the WHERE clause
10

DELETE Queries in JPA/JPQL

cannot include multiple variables and JOIN, and cannot include the GROUP BY, HAVING and ORDER BY clauses
10

ObjectDB Object Database Features

OUTER JOIN and JOIN FETCH). WHERE (with both JPQL and JDOQL expressions). GROUP BY (including HAVING
10

CRUD Database Operations with JPA

the results (using an ORDER BY clause) and even group results (using GROUP BY and HAVING clauses). JPQL
10

[ODB1] Chapter 8 - ObjectDB Server

is found, the new configuration is loaded automatically without having to restart the server. To turn
10

Query Parameters in JPA

a parameter in a Criteria API query. The reason for having nine set methods rather than just

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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