Hi Calven,
ERXDatabaseContextDelegate.databaseContextFailedToFetchObject will explain what
you are seeing. You can see the property
er.extensions.ERXDatabaseContextDelegate.tolerantEntityPattern to avoid this
behaviour but... The best thing to do here is to ensure that your database has
referential integrity. :-) The FK should be null not zero so that the first
line will return pgEO == null which you should then check before the second
line to avoid the dreaded NPE. You code is relying on the behaviour of a
"dummy fault EO":
http://lists.apple.com/archives/webobjects-dev/2008/Sep/msg00208.html
Chuck
On 2015-03-16, 1:22 PM, "Calven Eggert" wrote:
In moving a project over to Project Wonder, I'm happy to say that things are
going very smoothly. Today I've come across an issue with this code:
EOEnterpriseObject pgEO = (EOEnterpriseObject)
currentTrial.valueForKey("programGrouping");
String programGroupingStr = (String)
pgEO.valueForKeyPath("displayName");
return programGroupingStr;
Previously when pgEO did not exist, (a valid result) the code would continue
to run and I'd simply get null in programGroupingStr. The value for the pgEO
after line one is this:
{values = {programGroupingId =
<com.webobjects.foundation.NSKeyValueCoding$Null>; displayName =
<com.webobjects.foundation.NSKeyValueCoding$Null>; bixidentity = "null"; };
this = "<com.webobjects.eocontrol.EOGenericRecord 7e6bc5aa
_EOIntegralKeyGlobalID[BIXProgramGrouping (java.lang.Integer)0]>"; }
Now using Project Wonder, the value of pgEO becomes:
<er.extensions.eof.ERXGenericRecord pk:"0">
and when trying to execute the second line:
ObjectNotAvailableException: No er.extensions.eof.ERXGenericRecord found with
globalID: <BIXProgramGrouping: [programGroupingId: '0']
What is the best way to deal with this scenario?
Calven
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