Mark,

Thanks so much for this investigating.  It was a perfect addition to a
plate of turkey and a glass of Australian shiraz. :-)

At the end, when you say "it is odd that dateCreated is being changed", you
mean that the dateCreated *reference* has changed, not the value, right?
 Presumably because hibernate is doing some cloning or similar trickery
under the hood?

-Burke

On Thu, Nov 24, 2011 at 9:39 AM, Mark Goodrich <[email protected]> wrote:

> No, even after flushing the session, the assert still fails.
>
> There's only one intercepted method in the AuditableInterceptor... the
> onDirtyFlush.  The interceptor methods are called on an object-by-object
> basis.  I added a dummy onSave method to the interceptor and debugged and
> found the following:
>
> 1 )After the first saveEncounter in the editNewEncounter method:
> The onSave method is called three times, once for the Encounter, and once
> for each of the two Obs added
> The onDirtyFlush method is not called
>
> 2) After the second saveEncounter in the editNewEncounter method:
> The onDirtyFlush method is called four times, twice for each of the two
> edited Obs
> The onSave method is not callled
>
> 3) After the only saveEncounter in the editExistingEncounter method:
> The onDirtyFlush method is called six times, twice for the Encounter, and
> twice for the two edited Obs
> The onSave method is not called
>
> I looked a little deeper into #3 to see exactly why the onDirtyFlush
> method was being called to hopefully determine why it wasn't being called
> in  case #2.
>
> First, during the saveEncounter in the editExisingEncounter method,
> onDirtyFlush is called with the Encounter, because three encounter fields
> have changing:
> encounterDate and dateCreated are both changing from an existing timestamp
> object to a new timestamp object
> voidReason is changing from and empty string to null
>
> Next, onDirtyFlush is called for each of the two Obs, with the following
> fields changing:
> obsDatetime and dateCreated are both changing from an existing timestamp
> object to a new timestamp object
> the valueNumeric is updated, as expected
> the personId is updated from one Integer object to another Integer object
> (though with the same integer value, thankfully!)
>
> Next, onDirtyFlush is called again with the Encounter.  Now, six fields
> have changed... the three fields mentioned previous (encounterDate,
> dateCreated, and voidReason) all have the same previous and current values
> as when the last dirty flush was called, and three new fields have changed:
> voided from null to false
> dateChanged from null to a timestamp
> changedBy from null to the current user
> (So it looks like this caused by the voided value change, or it is a
> recursive call caused by the changes made in the AuditableInterceptor
> itself.)
>
> Then, finally, onDirtyFlush is called again with the two obs, and checking
> the current previous states show the exact same changes as the first call.
>
> I don't know if I can come to any conclusions here except that it is odd
> that dateCreated is being changed.  One tangential point is that when obs
> are updated this way (saved via a cascade from an encounter) they are not
> voided and recreated, but I believe this is a known issue I entered a
> ticket about at some point?
>
> I hope I've provided you all with some fun Thanksgiving reading.
>
> Mark
>
>
>
> ________________________________________
> From: [email protected] [[email protected]] On Behalf Of Ben Wolfe [
> [email protected]]
> Sent: Thursday, November 24, 2011 7:40 AM
> To: [email protected]
> Subject: Re: [OPENMRS-DEV] Auditable Interceptor functionality
>
> Do you know which method in the interceptor is called on that first save?
>
> Is the dateChanged set at the end of the transaction?  If you flush the
> session right before your failing assert, does the assert then pass?
>
> Ben
>
> On Thu, Nov 24, 2011 at 12:22 AM, Mark Goodrich <[email protected]<mailto:
> [email protected]>> wrote:
> Sorry I missed the design call on hibernate interceptors today, but,
> coincidentally, I was investigating an issue with the Auditable interceptor
> that I uncovered when running the HFE unit tests against 1.8.  Or, rather,
> something that may be an issue.
>
> Take the following unit test, which creates a new encounter, saves it,
> updates the obs associated with it, and saves it again.  Using the old save
> handlers, the dateChanged of the encounter would be set upon the second
> save.  But, with the hibernate interceptor, this is not the case and so
> this test will fail:
>
> public void editingNewEncounter_shouldUpdateDateCreated() throws Exception
> {
>               EncounterService es = Context.getEncounterService();
>
>               // First, create a new Encounter
>               Encounter enc = new Encounter();
>               enc.setLocation(new Location(1));
>               enc.setEncounterType(new EncounterType(1));
>               enc.setEncounterDatetime(new Date());
>               enc.setPatient(new Patient(3));
>               enc.setProvider(new Person(1));
>
>               // Now add a couple obs to it
>               Obs newObs = new Obs();
>               newObs.setConcept(new Concept(1));
>               newObs.setValueNumeric(50d);
>               enc.addObs(newObs);
>
>               Obs anotherNewObs = new Obs();
>               anotherNewObs.setConcept(new Concept(1));
>               anotherNewObs.setValueNumeric(100d);
>               enc.addObs(anotherNewObs);
>
>               // now save the encounter
>               es.saveEncounter(enc);
>
>               // flush the session, just to be safe
>               Context.flushSession();
>
>               // confirm that the encounter has been assigned an id, but
> the date changed is still null
>               assertNotNull(enc.getId());
>               assertNull(enc.getDateChanged());
>
>               // confirm tha the obs have been added to the encounter
>               assertEquals(2, enc.getAllObs().size());
>
>               // Now edit the obs and resave the encounter
>               for (Obs o : enc.getAllObs()) {
>                       o.setValueNumeric(75d);
>               }
>
>               // resave the encounter
>               es.saveEncounter(enc);
>
>               // FAILS: confirm that the date changed has been set
>               assertNotNull(enc.getDateChanged());
>       }
>
> Note, however, that if I load an existing encounter and update the obs,
> the date changed will be set:
>
> public void editingExistingEncounter_shouldUpdateDateCreated() throws
> Exception {
>               EncounterService es = Context.getEncounterService();
>
>               // First, load an existing Encounter
>               Encounter enc =
> Context.getEncounterService().getEncounter(3);
>
>               // confirm that the date changed is null
>               assertNull(enc.getDateChanged());
>
>               // Now edit the obs and resave the encounter
>               for (Obs o : enc.getAllObs()) {
>                       o.setValueNumeric(75d);
>               }
>
>               // resave the encounter
>               es.saveEncounter(enc);
>
>               // PASSES: confirm that the date changed has been set
>               assertNotNull(enc.getDateChanged());
>       }
>
> In the first case the encounter is never passed to the interceptor
> onDirtyFlush method...  I would assume because the Encounter is still in
> the new/save state?  Is this a problem?  This is a contrived case, and it
> seems to make sense that if an encounter is saved twice in rapid succession
> it's date changed isn't set--but this isn't the behavior I would have
> expected, and it is different from how the old save handlers worked.
>
> Thoughts?
> Mark
>
>
>
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