topic Re: [resolved] tmap convert string to char in Talend Studio

[resolved] tmap convert string to char

Jcs19 — Mon, 26 Jan 2015 14:48:07 GMT

Hello Talend,

I'm trying to convert a string "X" to a character 'x' in tMap
Actually my problem is that when i tried to do (row1.name == "X")?1:0 Talend never reconize "X" and always return 0 whereas there are X in my data.
Thats wierd, maybe its because my string contains only 1 character !
That's why I want to try row1.name == 'X'
My Data :

My tMap

MS_op is string
test is integer
I also tried to trim and left(row1.name,1)

My output

Expected output
X ¦ 1
X ¦ 1
¦ 0
¦ 0
what's wrong !? HALP !!

Re: [resolved] tmap convert string to char

Jcs19 — Mon, 26 Jan 2015 16:41:07 GMT

I found a workaround by doing
(row1.name==null)?0:1
but i really want if row1.name = "X" then 1 else 0

Re: [resolved] tmap convert string to char

Anonymous — Mon, 26 Jan 2015 19:39:44 GMT

Hi,
looks like you're getting tripped up on a bit of subtle java syntax.
to get it to do what you want, you'll need to use the "<String>.equals()" String method instead of "==".
Java uses "==" to compare object references, not to check if the contents are the same.
give this a try in your tMap:


"X".equals(row1.name) ? 1 : 0

Re: [resolved] tmap convert string to char

Jcs19 — Tue, 27 Jan 2015 08:52:49 GMT

Hi,
looks like you're getting tripped up on a bit of subtle java syntax.
to get it to do what you want, you'll need to use the "<String>.equals()" String method instead of "==".
Java uses "==" to compare object references, not to check if the contents are the same.
give this a try in your tMap:
"X".equals(row1.name) ? 1 : 0

Thank you, it works!
I tried that but i did row1.name.equals("X")?1:0 and i had a null error