I am "kind of" new to the hibernate community.

I try to fill 3 tables that are connected each other like that:

1. DataType table (1-N associated with Capability table)
2. CapabilityType table (1-N associated with Capability table)
3. Capability table (N-1 associated with DataType table,
N-1 associated with CapabilityType table)

The Capability table has

ID(PK)

Name

Accuracy

Units

CapabilityTypeID(FK to CapabilityType.ID )

DataTypeID(FK to DataType.ID )

The first 2 tables are filled properly with values I provide but I get the following error while the last table(Capability) is going to be filled:

org.hibernate.property.BasicPropertyAccessor$BasicGetter get
SEVERE: IllegalArgumentException in class: logic.CapabilityType, getter method of property: ID
Exception in thread "main" org.hibernate.PropertyAccessException: IllegalArgumentException occurred calling getter of logic.CapabilityType.ID

I have to say here that the Database is properly built, the java file of entities seems right and the mapping XML files seem right also.

Thanks in advance!

What does your Capability.getID() method look like? Could it be throwing an IllegalArgumentException?

No. The error was not there.

I found was going wrong!

Actually, I had defined the two foreign keys as integers!This was wrong, You have to define the type of each foreign key like the associated entity's name.

For example, CapabilityTypeID which is the foreign key to the table CapabilityType had to be type of CapabilityType and not integer!

The same with DataTypeID.

That is how hibernate works!! I hope it was easier to understand..

Anyway thanx for your help!