I think I know how to manage transactions in Zope, but I don't know how to lock Zope resources for multiple requests.
For example :
I have a DTML Method, called "transac1", which looks like this :
"waiting 10 seconds..."
wait_10_seconds is an External Method that sleeps for 10 seconds.
In the other hand, I have another method, called "transac2" :
In the parent Folder, there's a property called "var" which I use in these methods. It has an initial value of 0.
The point is : if I call the first method, and while it's sleeping, I call the second one (from another window, for example), it doesn't work properly. The first one crashes, and doesn't finish right. The final "var" value is 2.
I want to know if there is any way to lock the folder, and its properties, so no one can access to it until my method "transac1" finishes, and where can I find information about locking resources in Zope.