Bug: web delete/refresh issues

[jamoore]

While testing #5749 I ran into an odd progression of events. I'll try to summarize them here, before I start reproducing (to follow).

• In the web (using Chris' 7750_web_config branch, just merged into develop), I created two projects and then copied one dataset into both of them.
• I selected both projects and deleted them.
• In the activities window, I saw an error which I wanted to reproduce on the command-line.
• I went to the command-line and reproduced, but it was only a warning, not an error (see paste below)
• I went back to the web UI, the error was gone. I.e. the UI had been updated with no more error. (I don't have a screen shot of that)
• Knowing that I had mucked around on the command-line, I refreshed.
• Either just before the refresh, during, or just after (sorry, can't remember), I noticed the "please login" screen in the third panel. (See screenshot).
• I then went about trying to reproduce the project/datasets but I had a number of XMLHTTPRequest errors. (see log)
• After those errors ended, I thought things were back to normal, so I tried the delete again. This time, I reproduced the error in #5749 (also captured in log)

My very inexpert thought at the moment is that somewhere a reference is being held to a delete handle, but I'm going to try to reproduce as much of the above as I can now.

Command-line delete

@7750_web_config ~/git/dist $ bin/omero hql "select p from Project p"
Using session b8f43b0e-5832-4ddd-ace8-58d2137197af (root@gretzky.openmicroscopy.org.uk:4064). Idle timeout: 10.0 min. Current group: system
 # | Class    | Id   | name        | details         
---+----------+------+-------------+-----------------
 0 | ProjectI | 3618 | New project | owner=0;group=0 
 1 | ProjectI | 3619 | New project | owner=0;group=0 
(2 rows)

To see details for object, enter line number.
To move ahead one page, enter 'p'
To re-display list, enter 'r'.
To quit, enter 'q' or just enter.
q
@7750_web_config ~/git/dist $ bin/omero delete /Project:0 /Project:1
Using session b8f43b0e-5832-4ddd-ace8-58d2137197af (root@gretzky.openmicroscopy.org.uk:4064). Idle timeout: 10.0 min. Current group: system
^CCancelled
@7750_web_config ~/git/dist $ bin/omero delete /Project:3618 /Project:3619
Using session b8f43b0e-5832-4ddd-ace8-58d2137197af (root@gretzky.openmicroscopy.org.uk:4064). Idle timeout: 10.0 min. Current group: system
Deleting /Project 3618... ok
	warning: ConstraintViolation: fkprojectdatasetlink_child_dataset
Deleting /Project 3619... ok
@7750_web_config ~/git/dist $ bin/omero hql "select p from Project p"
Using session b8f43b0e-5832-4ddd-ace8-58d2137197af (root@gretzky.openmicroscopy.org.uk:4064). Idle timeout: 10.0 min. Current group: system
 # 
---
(0 rows)

To see details for object, enter line number.
To move ahead one page, enter 'p'
To re-display list, enter 'r'.
To quit, enter 'q' or just enter.
q
@7750_web_config ~/git/dist $ bin/omero hql "select p from Dataset p""
> 
@7750_web_config ~/git/dist $ bin/omero hql "select p from Dataset p"
Using session b8f43b0e-5832-4ddd-ace8-58d2137197af (root@gretzky.openmicroscopy.org.uk:4064). Idle timeout: 10.0 min. Current group: system
 # 
---
(0 rows)

To see details for object, enter line number.
To move ahead one page, enter 'p'
To re-display list, enter 'r'.
To quit, enter 'q' or just enter.