lockRowComparingAttributes
lockRowComparingAttributes
- Subject: lockRowComparingAttributes
- From: "Jonathan Fleming" <email@hidden>
- Date: Sat, 15 Mar 2003 16:12:08 +0000
I've looked at the API and tried to make sense of 2 replies that I've had on
this subject and I still don't understand what is causing the error below.
Does anyone have a layman's answer to this since the technical one is
baffling me?
What i am being told is that I may be using pessimisic locking instead of
optimistic locking, if I am, I don't know how I've got on to that... the
only thing I can think of that may have cause this auomatically (if
possible)is that in EOModel I have turned off the lock symbol next to any
attribute that has the external type of "object" because comaring a snapshot
with a blob would make the app much slower. Other than that i can not answer
this.
If I have somehow defaulted to pessimistic locking, how do I go back to
optimistic locking so I can at least see if my error is down to the EOModel
locking mechinism?
Exception occurred while handling request:
com.webobjects.eoaccess.EOGeneralAdaptorException:
lockRowComparingAttributes -- com.webobjects.jdbcadaptor.JDBCChannel: lock
operation failed to select any rows
[2003-03-15 15:43:29 GMT] <WorkerThread0>
com.webobjects.eoaccess.EOGeneralAdaptorException:
lockRowComparingAttributes -- com.webobjects.jdbcadaptor.JDBCChannel: lock
operation failed to select any rows
I'd love to understand this
Jonathan
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