New post
Question
· Sep 12, 2023
Scoping OID / OREF map

It's a feature of ObjectScript (perhaps widely known, perhaps not) that if you open the same object ID multiple times, you end up with the same OREF. For example:

USER>set obj1 = ##class(Sample.Person).%OpenId(1)
 
USER>set obj2 = ##class(Sample.Person).%OpenId(1)

USER>w obj1,!,obj2
1@Sample.Person
1@Sample.Person

Generally speaking, this is an important feature - you won't end up accidentally modifying the same record via multiple paths and losing some of the changes.

2 10
2 311
Question
· May 1, 2023
Errors in docker run

Has anyone seen this before? I'm new/bad at Docker and not even sure how to debug.

$ sudo docker logs <container>
[INFO] Starting InterSystems IRIS instance IRIS...
[INFO] Unable to read the startup.last file to identify the location of the write
image journal file (IRIS.WIJ) that was last in use by this instance. Please
fix the permissions of the startup.last file.

** Startup aborted **

0 7
0 242

I'm trying to read the response to a long (indefinitely) running HTTP response with Transfer-Encoding: chunked. Ideally I'd be able to read the individual chunks from the response and do something with them as they arrive rather than needing to wait for the response to finish (because it never will) - ultimately I'm thinking to wrap these back up over a WebSocket connection which seems cleaner from an API perspective.

So far it looks like my options are:

1 3
0 689

I'm getting wrapped around the axle with CAST and CONVERT and can't seem to find a way to do this (short of adding a stored procedure wrapping $zdt($zdth(posix,-2),3), which I'm refusing to do on principle, because there has to be some way to make this work).

Any ideas?

1 4
0 221

I'm trying to write a method that runs an OS command with $zf(-100,"/ASYNC") and then waits for it to finish before returning, but I can't figure out how to check if the child process (in $zchild) is still running. $System.Process.State($zchild) always returns "RUN" even once the child process is gone. Is there some better way to check this, short of running another OS-specific command and processing the output (which is just really annoying and unelegant)?

0 8
0 372

I'm in a tricky situation where a new required property is being added to a class, along with an index on it. The existing data has nulls, so the index build fails. I can't run a query to update the rows where there are nulls, because it tries to use the index, which hasn't been built yet.

0 3
0 209