Google Apps Script ScriptDb permissions issue - permissions

Question

I am having an issue trying to query the ScriptDb of a resource file in Google Apps Script. I create a script file (file1), add it as a resource to another script file (file2). I call file1 from file2 to return a handle to its ScriptDb. This works fine. I then try to query the ScriptDb but have a permissions error returned.
Both files owned by same user and in same google environment
See code below:
file 1:
function getMyDb() {
return ScriptDb.getMyDb;
}
file 2 (references file1):
function getDataFromFile1() {
var db = file1.getMyDb(); // This works
var result = db.query({..............}); // This results in a permissions error!
}
I am at a loss to understand why I can access file1 and get back a handle on the ScriptDb, but then am not able to query it, due to an permissions issue.
I have tried to force file1 to require re-authorization, but have not yet been successful. I tried adding a new function and running it, so any suggestions there would be gratefully received.
Thanks in advance
Chris

Answer 1

There appears to be an error in file1/line2. It says "return ScriptDb.getMyDb;" but it should say "return ScriptDb.getMyDb();"
If you leave out the ()s then when you call file1 as a library, file1.getMyDb() will return a function which you store in var db. Then the line var result = db.query({..............}) results in an error because there is no method "query" in the function.
Is that what's causing your error?

Answer 2

I have figured out what the problem was, a misunderstanding on my part regarding authorisation. I was thinking of it in terms of file permissions, when in fact that problem was that my code was not authorised to run the DbScript service. As my code calls a different file and receives back a pointer to a ScriptDb database it is not using the ScriptDb service, so then when it calls the db.query() it invokes the ScriptDb service, for which it is not authorised.
To resolve this I just had to create a dummy function and make a ScriptDb.getMyDb() call, which triggered authorisation for the service. The code then worked fine.
Thanks for the input though.
Chris