I have the following classes(tables).
They represents Forms, Questions and
Questions which are included in some Forms.

The class Question has property Name, it represents
a short name of a questions.

Could you please help me to understand
how can I create in class Form
the map "QuestionBy" which maps Name -> Question for a given FormID.

I surfed the Web for examples and documentation
but did'nt fin anything useful.

Thank you!

Sergey





Form
{
FormID
Type
}


Question2Form
{
QuestionID
FormID
Sequence
}

Question
{
QuestionID
Name
Text
}

From what you describe I guess you have a many-to-many relationship between Form and Question tables. Look in the documentation for many-to-many associations. Basically, your mapping will look like this:


Depending on the type of association: unidirectional or bidirectional you will have to set other attributes like "lazy", "cascade" etc. Again, look in the documentation

Regards,
Radu

I meaned some other think.
How can I use the MAP: QuestionName->Question
something like:

Form form;
((Question)form.QuestionByName["AGE"]).Text="How old are you?"

I think you should use a HQL query to retrieve your question. Another approach is to use brute force: iterate the question list and return the question which match your criteria.

Radu

What for does it exist in hibrnate?


Thank you!