About createNamedQuery

JPA Named Queries

Explains how to define and how to run JPA named queries.... factory methods are used to instantiate them. The createNamedQuery createNamedQuery(name, resultClass) EntityManager's method Create ...

createNamedQuery(name)

Create an instance of Query for executing a named query (in the Java Persistence query language or in native SQL).(Method of javax.persistence.EntityManager)

createNamedQuery(name, resultClass)

Create an instance of TypedQuery for executing a Java Persistence query language named query.(Method of javax.persistence.EntityManager)

createNamedQuery throws wrong exception

Hello I'm tying to use ObjecDB with spring-data for JPA and there is an issue where spring-data checks for existance of named query which does not exist yet. Based on JPA specification ... to be invalid */ public Query createNamedQuery ( String name ) ; however ObjectDB ...

javax.persistence.EntityManager

Interface used to interact with the persistence context.(Interface of JPA)

New to Product & Having An Issue

Greetings ObjectDB Users! I'm new to the product, and I've setup a simple test after reading the tutorial, and I'm running into some issues with queries, specifically querying by primary key. I have a domain object class Called Department, which has a member of type DomainId. DomainId has two member fields: String accountId and String objectId. The following code shows these two classes.... { TypedQuery<department> q = em. createNamedQuery ( "Department.findByPK" , Department. class ... TypedQuery&lr ; Department> q = em. createNamedQuery ( "Department.findByCmpPK" , Department. class ...

Duplicate Entity class names causes Exception in Query

I have two Entities which have the same class name but reside in different packages, only one of them is mentioned in the persistence.xml. I a NamedQuery I use the unqualified class name of one of these entities. If I execute that query I get an exception; ... ) { TypedQuery<Item> q = em. createNamedQuery ( "objdbTest.Singleton.getItem" , Item. class ... ) { TypedQuery<Long> q = em. createNamedQuery ( "objdbTest.Singleton.count" , Long. class ...

javax.persistence.NamedQuery

Specifies a static, named query in the Java Persistence query language.(Annotation of JPA)

Conflicting modifiers .... (javax.persistence.Id, javax.persistence.ManyToOne)

I have two classes a Container type class and another class that is 'contained' by that class. The contained class, CompoundKeyMapItem, represents an alternate implementation of an object held in a Map, and uses a Compound Primary Key. The contained class therefore uses an @IdClass. This all works fine on Eclipselink. However when I try and run this in ObjectDb I get the following error; ... em ) { Query q = em . createNamedQuery ( "numberOfMapItems" ) ; q. ...

Should derived fields of an EmbeddedId be manually maintained by app code?

If I have an Entity which has a primary key which is derived and I am implementing it using @EmbeddedId, am I responsible for maintaining the derived fields of the @EmbeddedId? I could not find anything in the JPA 2.0 spec http://download.oracle.com/auth/otn-pub/jcp/persistence-2.0-fr-oth-JSpec/persistence-2_0-final-spec.pdf?e=1317047713&h=54831c176e81a244a4c309e13eba0b27 which tells me what to expect. ... em ) { Query q = em . createNamedQuery ( "numberOfMapItems" ) ; q. ...