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JPA Doc
7

Criteria Query From Elements

The interfaces in this group are in use for setting a criteria query FROM clause. Criteria Query Variables The FROM clause in JPA queries (as in SQL) defines the query variables. Query variables are represented in criteria queries by descendant interfaces of the From interface: Range variables
Tutorial
7

JPA Tutorials [2011-02-09]

tutorial demonstrates how to use ObjectDB and JPA in a console application: Quick Start with JPA Tutorial Only basic Java experience is required in order to follow this tutorial. Web Application Tutorials The web application tutorials demonstrate how to use JPA in web applications. Understanding
Manual
7

JPA Named Queries

dynamically into the query string and results in more efficient queries. @NamedQuery ... " that retrieves all the Country objects in the database: @NamedQuery(name="Country.findAll", query ... queries to the same entity class requires wrapping them in a @NamedQueries annotation, as follows
Tutorial
7

JPA Tutorials

tutorial demonstrates how to use ObjectDB and JPA in a console application: Quick Start with JPA Tutorial Only basic Java experience is required in order to follow this tutorial. Web Application Tutorials The web application tutorials demonstrate how to use JPA in web applications. Understanding
Manual
7

Running JPA Queries [2011-09-21]

when exactly one result object is expected. Query.getResultList - for general use in any other case ... - for use when exactly one result object is expected. TypedQuery.getResultList - for general use in any other case. In addition, the Query interface defines a method for running DELETE and UPDATE queries
Manual
7

Running JPA Queries

when exactly one result object is expected. Query.getResultList - for general use in any other case ... - for use when exactly one result object is expected. TypedQuery.getResultList - for general use in any other case. In addition, the Query interface defines a method for running DELETE and UPDATE queries
Forum
7

"where in" query

Is it possible to run a query selecting values that exist in a provided list? e.g. something like: SELECT u FROM User m WHERE u.username IN ('test_user','anotheruser') I've tried various ... below). The only similar examples I can find in the docs involve a join query - but my list isn't in the database
Forum
7

In memory processing for ObjectDB

, but to take it to next level really we wanted to check whether is there any In memory mode available ... see in settings is query cache, is it only that query result sets are cached or I can actually have a all of my Objects in Cache ? We can run the embeeded mode for perfomance, or embeeded + in memory
Forum
7

Indexing a field results in internal Exception

.  Is there anything I can look for that might result in this exception? More details are required ... . If you are working in client-server mode, you should try to restart the server after schema change. After adding an index to an existing entity class with instances in the database, run the ObjectDB Doctor (in fix
Forum
7

Is it ok to put list or map of embeddable objects in entity ?

Hi, Is it ok to put list or map of embeddable objects in entity? I mean, for example : @Entity ... ? In the examples, there is only situation where there is one single instance of embeddable class in ... >()) on an entity that had some Class_B instances in bList? Will they be deleted correctly from database