topic Re: Can i use dynamic name to call name context ? in Talend Studio

Can i use dynamic name to call name context ?

Anonymous — Wed, 13 Jun 2018 11:47:09 GMT

Hello,

I have different name context like :

user12 = johnny

user20 = bob

user54 = billy

I my job, i have my id user.

Can i use a dynamic name context like :

context."user"+id

String my_user = "user"+id;

context.my_user

I try more syntaxes but it's not ok

Thanks for your help,

Arnaud

aashish_21nov — Wed, 13 Jun 2018 12:29:31 GMT

no for context variable you can't do so.

I try to help you if you explain your problem more clearly

aashish_21nov — Wed, 13 Jun 2018 12:34:08 GMT

or you can do with the below strategy(in tJava component):

int id=25;

context.my_user = context.user+id; //where id is a variable

Anonymous — Wed, 13 Jun 2018 13:34:41 GMT

Here is my context.

To get my context :

context.user12 > I have my response : johnny

Now, i want to get my context dynamically. I try different syntaxes but it's not ok

current_id = 12

context."user"+current_id > cannot be resolved

context.user+current_id > cannot be resolved

Do you have any idea ?

TRF — Wed, 13 Jun 2018 13:50:12 GMT

You cannot construct context variable names as they must exist at compile time.

On the other hand, you can do it with global variables but depending of why you try to do, maybe it's not a solution for you.

Anonymous — Wed, 13 Jun 2018 14:05:03 GMT

I find a solution with a method context : getProperty()

String my_user = context.getProperty("user" + current_id);

It works !

If my current_id doesn't match with an existing context name as context.getProperty("user" + 25465)

> return null

Thanks everyone !!