Hi,

sorry for my english! :)

I read an example in the hibernate documentation how to use one-to-one and many-to-one.





I can't understand what, in my project, insert in <set name="??? "> .
If I put a random values encounter an error like this:
"Could not find a getter for <random values> in class com.test.User.

I can insert only property name present in the same hbm.xml file and if i put them encounterd an error like this: "Duplicate property mapping of usrIdfound in <Class name>.

Thanks!

you need to generate getter/setter for the collection in com.test.User.

Ok, but what should contain the new collection and what would be its purpose?

thanks.

Indeed, your lack of setters and getters is really causing you some problems.

Here's a tip - if you're just starting out, think about using JPA annotations. Here are some really simple examples that will make learning Hibernate alot easier for you:

http://www.hiberbook.com/HiberBookWeb/learn.jsp?tutorial=17mappingonetooneassociations

Good luck!

Thank you, but am a little confused.
I am using Struts and I believed that to make join i need to modify the file <class>. Hbm.xml

yes using jpa is great.
It's simple when you define an attribute in your mapping file you always need the corresponding getter and setter methods so hibernate can fill/get the values.

so if you for example map a string with name="username" in class="model.User" you have to add in your class(User) getUsername() and setUsername() that it works.

You also need an standard constructor like
public void User(){}.

maybe you can post the code of your class here and the corresponding mapping.

Ok.
But I wonder why if I enter a property hibernate tells me that the property is duplicated.


usrName is the PK.
usrId is the FK.

In another class:


mainId is the PK.
mainUsrId is the FK.

relations are Main.mainUsrID ----N----------1---->User.usrId.

if I follow the example of the first post how should I write this parts:



and



If i add those lines the error is the same: Duplicate property mapping.

thanks!

hm i meant the java classes actualy but anyway, i'm not that familiar with xml mappings cause i use jpa but on the Parent side you need a Collection (Set) which contains the children. And on the Children side you can use the many-to-one to have a reference to the corresponding Parent.