Native array mapping

Sergei · **Joined:** Mon May 17, 2004 4:05 pm **Posts:** 3

So i have class with String[] , and as reference says i am mapping it as:

<primitive-array name="names">
<element type="string"/>
</primitive-array>

I dont see any issues with dtd in it, and then i am getting:

Caused by: java.lang.ClassCastException
at net.sf.hibernate.cfg.Binder.bindArray(Binder.java:689)
at net.sf.hibernate.cfg.Binder$7.create(Binder.java:1388)
at net.sf.hibernate.cfg.Binder.propertiesFromXML(Binder.java:952)
at net.sf.hibernate.cfg.Binder.bindRootClass(Binder.java:338)
at net.sf.hibernate.cfg.Binder.bindRoot(Binder.java:1167)

When i am trying to add mapping to hibernate.

I tried to specify String/java.lang.String/string as name type and each one fails.
Whats the secret?

Thanks..

christian · **Posted:** Mon May 17, 2004 4:19 pm

A String is not a primitive.

Sergei · **Joined:** Mon May 17, 2004 4:05 pm **Posts:** 3

well problem is - java.lang.String throws exact same exception.

christian · **Posted:** Mon May 17, 2004 4:36 pm

So, java.lang.String is also not a primitive in Java.

Sergei · **Joined:** Mon May 17, 2004 4:05 pm **Posts:** 3

Well, yes and no.

this is bit from documentation:
<set name="names" table="NAMES">
<key column="GROUPID"/>
<element column="NAME" type="string"/>
</set>
(which is apparently not working. As well as "integer" and "date")

I also have absolutely no issues with using :
<property name="email" type="java.lang.String"/>

therefore there seems to be some inconsistency in way of implementation of Hibernate, isnt it?

christian · **Posted:** Mon May 17, 2004 4:52 pm

I'm sorry, but all that doesn't make java.lang.String a primitive! You can't use a <primitive-array> mapping with a non-primitive type, use <array>.

christian · **Posted:** Mon May 17, 2004 4:53 pm

And read some beginner Java documentation to find out about the difference between primitive and non-primitive types. Then, continue with the Hibernate documentation to understand Hibernate mapping types.