JPA UnsupportedOperationException

From: <glassfish_at_javadesktop.org>
Date: Fri, 15 Oct 2010 07:37:39 PDT

Hallo,

I am new to Glassfish. I am trying to build a small sample application.
I use Glassfish V3 and Derby 10.6

I deploy everything in single war file.
The tables get created automatically and saving entities works fine. However when I run a NamedQuery I get the following exeption:

Caused by: java.lang.UnsupportedOperationException
        at org.eclipse.persistence.internal.jpa.EntityManagerImpl.createNamedQuery(EntityManagerImpl.java:974)
        at com.sun.enterprise.container.common.impl.EntityManagerWrapper.createNamedQuery(EntityManagerWrapper.java:555)
        at ejb.BookDAO.findBooks(BookDAO.java:19)

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package ejb;

import java.util.List;

import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.TypedQuery;

import entities.Book;

@Stateless
public class BookDAO {

        @PersistenceContext(unitName="book")
        private EntityManager entityManager;

        public List<Book> findBooks() {
                TypedQuery<Book> query = entityManager.createNamedQuery("findAllBooks", Book.class);
                return query.getResultList();
        }

        public Book createBook(Book book) {
                entityManager.persist(book);
                return book;
        }
}
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package entities;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.NamedQuery;

@Entity
@NamedQuery(name="findAllBooks", query="SELECT b FROM Book b")
public class Book {

        @Id @GeneratedValue
        private long id;
        @Column(nullable=false)
        private String title;
        private Float price;
        @Column(length=2000)
        private String description;
        private String isbn;
        private Integer nbOfPage;
        private Boolean illustrations;

//Getters and setters

---------------------------------------------------------------------------------------------
persistence.xml:

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence">
    <persistence-unit name="book" transaction-type="JTA">
        <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
        <jta-data-source>jdbc/books</jta-data-source>
        <class>entities.Book</class>
        <properties>
            <property name="eclipselink.target-database" value="DERBY"/>
            <property name="eclipselink.jdbc.driver" value="org.apache.derby.jdbc.ClientDriver"/>
            <property name="eclipselink.jdbc.url" value="jdbc:derby://localhost:1527/books;create=true"/>
            
            
            <property name="eclipselink.jdbc.user" value="APP"/>
            <property name="eclipselink.jdbc.password" value="APP"/>
            
            <property name="eclipselink.ddl-generation" value="drop-and-create-tables"/>
            <property name="eclipselink.logging.level" value="INFO"/>
        </properties>
    </persistence-unit>
</persistence>

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Any help would be greatly appreciated.
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