Hi,

I am new to nhibernate. I am using VisualStudio 2003 and I have downloaded the nhibernate v1.2.0 alpha. I am trying to map a simple customer entity to customer table using console application and i am getting the following error.

The element 'urn:nhibernate-mapping-2.0:id' has incomplete content. Expected 'urn:nhibernate-mapping-2.0:column urn:nhibernate-mapping-2.0:generator'. An error occurred at file:///C:/Vijay/tryOr/Customer/Cust.hbm.xml, (9, 11).

My cust.hbm.xml is as follows.

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.0"
namespace="Customer" assembly="Customer">

<class name="cust" table="Cust">

<id name="Id">
<column name="Id" sql-type="16" not-null="true"/>
</id>
<property name="Name">
<column name="Name" length="16" not-null="true" />
</property>
<property name="City" />
<property name="Country" />
</class>

</hibernate-mapping>

Can anybody help me on this.

Thanks

The <id> tag needs "generator" attribute, like

<id name="Id" generator="assigned">
<column name="Id" sql-type="16" not-null="true"/>
</id>

if You want to assign ID-s by yourself

Gert

Thanks gert for the quick response...

1) I changed the config file and i am getting the following error.

<id name="Id" generator="assigned">
<column name="Id" sql-type="16" not-null="true"/>
</id>

Additional information: The 'generator' attribute is not declared. An error occurred at file:///C:/Vijay/tryOr/Customer/Cust.hbm.xml, (14, 23).

2) I changed the config file as given in the sample documentation
like this.

<id name="Id">
<column name="Id" sql-type="char(32)" not-null="true"/>
<generator class="uuid.hex" />
</id>

I am getting the below error.

An unhandled exception of type 'NHibernate.InvalidProxyTypeException' occurred in nhibernate.dll

Additional information: method get_Id should be virtual

Cheers

Next time I must check the documentation and not write from memory :(



You must either make all public methods/proeprties virtual or add lazy="false" to class mapping.

Gert

Awesome!!!! Appreciated.... It works!!!!
Can you let me know if i want to generated my own key for the primary field column, how should i change the config?

Well having the generator class as assigned should make you able to do so. But you already specified "assigned" :)

<id name="Id">
<column name="Id" sql-type="16" not-null="true"/>
<generator class="assigned" />
</id>