yesterday's date

[Anonymous]

Hello !
I'm using a variable nb_day which is equal to 0 for today, 1 for yesterday, 2 for the day before...
I'm creating files and I want the date to be in the file names, so that for today my file name would be :
"D:/talend/AAA_"+TalendDate.formatDate("yyyyMMdd",TalendDate.getCurrentDate())+".log"
How can I get yesterday's date and so on like I do for today and using my variable ?
(basically I'm trying to do "D:/talend/AAA_"+TalendDate.formatDate("yyyyMMdd",TalendDate.getCurrentDate() - nb_day)+".log" but this is not working)
Thanks for your help !

[Anonymous]

It's because you have to multiply your parameter by one instead of just add a minus sign in front of it :
-1 * context.nb_days should work
Regards,
Karine

[Anonymous]

-1 * context.nb_days should work

Thanks for your answer ! Unfortunately it seems it doesn't work.
I'm still getting the NullPointerException.

[Anonymous]

Hello Augustine
Set a default value to context.nb_days, maybe 1.
Best regards
shong

[Anonymous]

I'm using v3.0.4 and am not able to modify the TalendDate system routine. Are there any special things I need to do to be able to modify it? Thanks.

[Anonymous]

Hello

I'm using v3.0.4 and am not able to modify the TalendDate system routine. Are there any special things I need to do to be able to modify it? Thanks.

I don't think it is a good idea to modify the system routine directly. If you want to enhance it ,you can create a new routine, copy the code and modify it.
Best regards
shong

[Anonymous]

String logFileName = "D:/talend/AAA_" + TalendDate.formatDate("yyyyMMdd", TalendDate.addDate(TalendDate.getCurrentDate(), - nb_day, "dd")) + ".log";

[Tasfiahm]

Thanks a lot. I did something similar. 

"F:/Talend/Work" + TalendDate.formatDate("MMddyyyy",TalendDate.addDate(TalendDate.getCurrentDate(), - 10, "dd"))+".csv"