Problem in "hello world" example of book.

t3cnosite · **Joined:** Thu Aug 05, 2010 11:49 pm **Posts:** 2

Running "hello world" example in book "Java Persistence with Hibernate", Manning edition, (in section "Using Hibernate Entity Manager" -> "Automatic detection of metadata"), i find this exception:

Code:

Exception in thread "main" java.lang.NoSuchFieldError: NONE
   at org.hibernate.ejb.QueryImpl.<init>(QueryImpl.java:604)
   at org.hibernate.ejb.QueryImpl.<init>(QueryImpl.java:79)
   at org.hibernate.ejb.AbstractEntityManagerImpl.createQuery(AbstractEntityManagerImpl.java:268)
   at hello.HelloWorld.main(HelloWorld.java:34)

and the interested line of code of Hello wolrd.java is

Code:

      newEm.createQuery("select m from Message m order by m.text asc").getResultList();

Why?
The code of Message class, HelloWorld.java, persistence.xml is the same of the tutorial on the book. But i don't understand why this exception.
Some help?

kboddapati · **Joined:** Thu Jul 29, 2010 3:43 pm **Posts:** 3

> select m from Message m order by m.text asc

There must be a typo.

you are selecting the table name "m" and not the column_name or the wildcard (*)

SQL SELECT Syntax:
SELECT column_name(s) FROM table_name
or
SELECT * FROM table_name

t3cnosite · **Joined:** Thu Aug 05, 2010 11:49 pm **Posts:** 2

kboddapati wrote:

> select m from Message m order by m.text asc

There must be a typo.

you are selecting the table name "m" and not the column_name or the wildcard (*)

SQL SELECT Syntax:
SELECT column_name(s) FROM table_name
or
SELECT * FROM table_name

Sorry, but this query is in the manual of Manning.
And the query is not in SQL syntax (methos isn't createSqlQuery(...) ), but in Hibernate syntax.
So, i find a better solution.
Or do i make some mistake?

souravtri · **Joined:** Tue Apr 26, 2011 5:59 am **Posts:** 1

This is a jar dependency issue - check if you have duplicate dependency of any jars.