topic override context variables in java in Talend Studio

override context variables in java

n999 — Sat, 16 Nov 2024 03:38:23 GMT

Not sure if this is the case in DI jobs as well, but it seems that if you want to override the value of a context variable using Java in a cConfig in a Route, you HAVE to do this:

context.variable1 = "new value";

and that this

context.setProperty("variable1", "new value");

will not work, even though the code compiles and runs.....

I would like to iterate through a separate collection of context variable names and values and set them programmatically, so I can't do this using the context.variable1 = "new value"; approach. I need to be able to pass in name, value pairs...

Is there anyway of overriding context variables in the way I would like to do?

thanks

Re: override context variables in java

Anonymous — Sun, 12 Jan 2020 10:52:08 GMT

Hi n999
I see you mentioned in another topic that you are able to override the context variable with with the following code
//override context_param value
context_param.setProperty(name, value);
//refresh talend context with context_params
readContextValues(contextStr);

Let me know if you still have any issue on this subject.

Regards
Shong

Re: override context variables in java

n999 — Tue, 14 Jan 2020 09:33:46 GMT

yes - thanks for the reply.

I guess my only concern is how supported is this approach -

* using context_param

* calling readContextValues()

- in future versions after 6.4 and beyond?

There is also the option to load up properties from files, into the camel context. And I think accessing the apache context is possible from any component using ether the {{var}} notation or "camelContext.resolvePropertyPlaceholders("{{var}}")?

Which would you recommend/support?

Re: override context variables in java

n999 — Tue, 28 Jan 2020 10:26:31 GMT

Hi Shong

Would still be very interested to know what Talend would officially support re my last post?

Cheers