Mapping of a list with jdk types

hib-java-user · **Joined:** Fri Feb 20, 2009 10:19 am **Posts:** 1

Hi, I'm trying to map a list of Long objects in a class. For example,

public class Foo {
private List<Long> numbers;
}

I wrote the mapping in hbm as follows:

<list name="numbers" cascade="all">
<key column="id"/>
<index column="idx"/>
<one-to-many class="java.lang.Long"/>
</list>

When i run the code, i get the following exception saying that java.lang.Long is not mapped:

Invocation of init method failed; nested exception is org.hibernate.MappingException: Association references unmapped class: java.lang.Long
Caused by:
org.hibernate.MappingException: Association references unmapped class: java.lang.Long
at org.hibernate.cfg.HbmBinder.bindCollectionSecondPass(HbmBinder.java:2380)
at org.hibernate.cfg.HbmBinder.bindListSecondPass(HbmBinder.java:2231)
at org.hibernate.cfg.HbmBinder$ListSecondPass.secondPass(HbmBinder.java:2729)
...

Is there another way to do it?

Thank you!

rosswilliamdrew · **Posted:** Fri Feb 20, 2009 10:47 am

Because Long is an object you need a mapping or a custom user type for it.

croudet · **Joined:** Mon Apr 19, 2004 6:54 pm **Posts:** 79

You should use 'element'

Code:

<list name="numbers" cascade="all">
  <key column="id"/>
  <index column="idx"/> 
  <element column="number" type="long"/>
</list>

Christophe