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Manual
28

Literals in JPQL and Criteria Queries

Describes literals in JPQL, including null, false, true, numbers, strings, dates enums and types.
Manual
28

Numbers in JPQL and Criteria Queries

Shows how numbers, arithmetic expressions and numeric functions and operators (MOD, ABS) can be used in JPQL queries.
Manual
28

Strings in JPQL and Criteria Queries

Explains string expressions in JPQL queries, including LIKE, LOCATE, LOWER, UPPER, TRIM, CONCAT and SUBSTRING.
FAQ
28

Where can I learn how to use ObjectDB?

All about Where can I learn how to use ObjectDB? in Java/JPA database - explanations, examples, references, links and related information.
Forum
20

JPA 2.0 Criteria API: (When) Fully supported ?

implementation creates a JPQL query string for fetching while the JPA 2.0 implementation uses Criteria API ... have a bug in the Criteria API implementation which prevents correct negation of conjunction and disjunction ... query with Criteria API.    * ObjectDB 2.1.0 - FAIL. Does not support Criteria API:      java.lang
Issue
20

No Entity Class API

and should not be bound to specific entity classes and persistent fields. Therefore, an API for accessing ... the Metamodel API to find details on the entity classes in a database. Obtain Class representation ... the classpath.  Use Java reflection API with information from the Metamodel API to access fields
Issue
19

JPA Query Criteria API (JPA 2.0)

The JPA Criteria API supports dynamic definition of JPQL queries using CriteriaBuilder as a factory ... API in expected in future versions.   Implementation of the JPA Criteria Query API was just added ... with full support of the JPA Criteria Query API, including complete test coverage and documentation. lwalkowski psartini kaosko
Issue
19

ArrayIndexOutOfBounds with Critera API and function call

Hello, This is getting really frustrating sorry but we're close before delivering our app to our customer and went against a show-stopper again. We're building a simple query with the criteria api ... () { return 100; } }; Create Selection Query (Critera-API) from * TestEntity and add WHERE class
Forum
19

Enhancement API - NullPointerException

Hi! I am trying to use the Enhancement API from within my application like this: com.objectdb.Enhancer.enhance("my.package.Foo"); However, I get the following NullPointerException: [ObjectDB 2.7.1 ... , the class exists and trying the API with a non-existent class gives me the expected "is not found by
Issue
19

Enhancer API (JDO 3.0)

One of the new features of JDO 3 is a standard API for enhancement. Currently ObjectDB implements its own enhancement API.