About JPA

issue

Bean Validation (JPA 2.0)

JPA 2 adds support for integration with the Bean Validation API. Constraints are added to entity and embeddable classes by annotations, and can be checked automatically on PrePersist, PreUpdate and PreRemove lifecycle events. Integration with the Validation API is currently not supported by ObjectDB. JPA Feature Version: 1.04 Priority: Normal Status: Active ... Type:  JPA Feature ... 2010-05-14 12:06 JPA 2 adds support for integration with the Bean Validation API. ...

 
manual

FROM clause (JPQL / Criteria API)

Explains how to use the FROM clause and JOIN expressions in a JPA/JPQL query.... classes from iteration at the FROM clause level. JPA 2, however, adds support for filtering instances of specific types at the ... in the @Entity javax.persistence.Entity JPA annotation Specifies that the class is an entity. See JavaDoc ...

 
manual

Paths and Types in JPQL and Criteria API

Explains how to use object expressions (path navigation, type) in JPA/JPQL.... Expressions The TYPE operator (which is new in JPA 2) returns the type of a specified argument, similarly to ... Types Paths and navigations are represented in the JPA Criteria API by the Path javax.persistence.criteria.Path ...

 
manual

Detached Entity Objects

Explains detached entity objects and how to work with detached objects in JPA, including merging them into an EntityManager.... javax.persistence.EntityManager JPA interface Interface used to interact with the persistence context. ... objects are limited in functionality: Many JPA methods do not accept detached objects (e.g. lock lock(entity, ...

 
forum_thread

JPA 2.1 and AttributeConverter

Hello :-). Are there any plans to support JPA 2.1? I would wish to have a support for @AttributeConverter. ... Hello :-). Are there any plans to support JPA 2.1? I would wish to have a support for @AttributeConverter. ... The general plan is to support future versions of JPA so probably JPA 2.1 features will also be supported. ...

 
issue

JPQL Update & Delete (JPA 1.0)

The JPQL (Java Persistence Query Language) supports updating and deleting database objects by queries. Currently ObjectDB supports only JPQL SELECT queries.Delete queries are supported for JDOQL (JDO Query Language). JPA Feature Version: Priority: High Status: Fixed ... Type:  JPA Feature ... Support ObjectDB - Fast Object Database for Java (JPA/JDO) edit ...

 
forum_thread

Does JPA have any configuration to create DDL's that are database specific

There some JPA classes who's names more that 30 character. This worked well in MySQL , Derby , PostgreSQL but when it was tried on oracle , we hit the constraint that oracle has of 30 characters.   So basically my question is that is there any JPA configuration to create DDL's that are specific to database   ... 11:05 There some JPA classes who's names more that 30 character. This worked well in MySQL , ... So basically my question is that is there any JPA have any configuration to create DDL's that are database specific. ...

 
manual

Date and Time in JPQL and Criteria Queries

Shows how date and time can be used in JPQL queries.... Current Date and Time JPA defines special JPQL expressions that are evaluated to the date and time on ... instance). Extracting Date Parts JPA doesn't define standard methods for extracting date and time parts but ...

 
forum_thread

Tomcat + JPA Problem

Hi i tried to setup the example from your webpage (jpa - Tomcat with Ecplipse) and i always get this Error: [ObjectDB 2.1.0] class "javax.persistence.Entity"'s signer information does not match signer information of other classes in the same package   ... Hi i tried to setup the example from your webpage (jpa - Tomcat with Ecplipse) and i always get this Error: [ObjectDB 2.1.0] ... This exception indicates a jar conflict, i.e. JPA is found in more than one jar (probably one signed and the other unsigned). ...

 
api-jpa

javax.persistence.metamodel.ManagedType

Instances of the type ManagedType represent entity, mapped superclass, and embeddable types.(Interface of JPA)