[odb-users] how to check a lazy pointer is null?

[不明真相]

Hi there,


The odb defined header file is like below:


#pragma db object class SeismicWavelet{#pragma db inverse(seismicWavelet_)    lazy_weak_ptr<RickerWavelet&gt; rickerWavelet_;}hence the lazy pointer rickerWavelet_ could be null if the child table has no record in it.if i write code like if(_seisWavelet-&gt;RickerWavelet() ==nullptr) or ==NULL, the compiler will give me error.And my question is how to check the lazy pointer is null? I know it sound like a very stupid question, but i have searched the odb manual and the mailing list and found nothing about it, please help!
BTW, i have used ODB for a while, and it's a very great work, i am getting love it more and more, thanks you guys the ODB developers.
Best Regards,
wang