save an object with a bidirectional relationship in mongodb using official c# driver

[omidrh]

I have two class like this:

public Class Company
{
public IList<Employee> Employees;
}

public Class Employee
{
public Company WorkPlace;
}

when I want to save an object of class Company:

MongoDatabase Database = MongoServer.GetDatabase("db");

var workPlace = new Company();

var employee = new Employee { WorkPalce = workPlace}
workPlace.Employees = new List<Employee>{ employee };

Database.GetCollection<Company>("company").Save(workPlace);

StackOverFlow Exception will be thrown.

[Robert Stam]

This is not currently possible.

The object graph being saved must not have any cycles or you will get
a StackOverflowException.

Even if it were possible you probably wouldn't want to save the entire
company as one document (think about what woud happen if the company
was very large).

For a 1 to n relationship like this I would suggest separate
collections for the Company and the Employee, and have the Employee
contain a CompanyId. You probably don't want the Company to contain a
list of EmployeeIds. You can always get the list by querying the
Employee collection by CompanyId.

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[Robert Stam]

This question was also asked on stackoverflow:

http://stackoverflow.com/questions/8461996/save-an-object-with-a-bidirectional-relationship-in-mongodb-using-official-c-sha

and there are some additional answers there.

[omidrh]

thanks Robert. your answer was correct.

[Vivek Mishra]

Try Kundera. It can surly help you out on this.

https://github.com/impetus-opensource/Kundera

On Dec 12, 7:36 am, Robert Stam <rob...@10gen.com> wrote:
> This question was also asked on stackoverflow:
>

> http://stackoverflow.com/questions/8461996/save-an-object-with-a-bidi...

>
> and there are some additional answers there.
>
> On Sun, Dec 11, 2011 at 1:18 AM, Robert Stam <rob...@10gen.com> wrote:
> > This is not currently possible.
>
> > The object graph being saved must not have any cycles or you will get
> > a StackOverflowException.
>
> > Even if it were possible you probably wouldn't want to save the entire
> > company as one document (think about what woud happen if the company
> > was very large).
>
> > For a 1 to n relationship like this I would suggest separate
> > collections for the Company and the Employee, and have the Employee
> > contain a CompanyId. You probably don't want the Company to contain a
> > list of EmployeeIds. You can always get the list by querying the
> > Employee collection by CompanyId.
>