Lcr.set_values('NEW',lcr.get_values('NEW')) behaviour during Update

Question

Hello,
I have a table t1 :
Column A : Primary Key
Column B
Column C
On the Source database i launched :
Update t1 set c=1 where a=3;
On the Target Database i received this LCR :
OLD column A : 3
OLD Column C : 2
NEW Column C : 1
=> No new column for A (This is normal).
I would like to insert a record containing OLD_A and NEW_C into the target database.
More generally, In fact i would like to insert ALL NEW values as well as OLD values for all NEW empty values.
I tried this :
lcr.set_values('NEW',lcr.get_values('NEW')); and i get exactly what I want !
So it looks like
that lcr.set_values('NEW',lcr.get_values('NEW')) populates the NEW values based on the OLD values and replaces OLD values with NEW VALUES that are non empty.
In this way you'll get the same updated record as the one on the Source database.
Question :
Can i rely on lcr.set_values('NEW',lcr.get_values('NEW')), is it normal it works in this way and produced (OLD_A,NEW_C) record ?
Or should i write my own procedure to do the job ? (Creates the (OLD_A,NEW_C) record)
Thanks
Bertrand

Answer 1

Sorry, forget my post here is the answer :
MEMBER FUNCTION GET_VALUES(
value_type IN VARCHAR2,
use_old IN VARCHAR2 DEFAULT 'Y')
RETURN SYS.LCR$_ROW_LIST;
value_type
The type of values to return. Specify old to return a list of old values. Specify new to return a list of new values.
use_old
If Y and value_type is new, then the function returns a list of all new values in the LCR. If a new value does not exist in the list, then the function returns the corresponding old value. Therefore, the returned list contains all existing new values and old values for the new values that do not exist.
If N and value_type is new, then the function returns a list of all new values in the LCR without returning any old values.
If value_type is old or if the command_type of the row LCR is not UPDATE, then the function ignores the value of the use_old parameter.
NULL is not a valid specification for the use_old parameter.