Setting up the global environment variable for the whole job

[WSyahirah21]

I am currently trying to create a nee job using Talend Studio. This job requires me to set system environment variable for the whole job, instead of set it per component.

My job is:

So as shown in image below, i managed to set the environment variable in tSystem, but how do i make it so that the environment variable is able to be used for the whole job instead of only one single component in TOS?

[gjeremy1617088143]

Hi, if you really want to set an environnement variable for all the job you can create a routine :

package routines;

import java.util.Map;

public class MyRoutine {

  @SuppressWarnings("unchecked")

public static Map<String, String> getModifiableEnvironment() throws Exception

  {

  Class<?> pe = Class.forName("java.lang.ProcessEnvironment");

  java.lang.reflect.Method getenv = pe.getDeclaredMethod("getenv", String.class);

  getenv.setAccessible(true);

  java.lang.reflect.Field props = pe.getDeclaredField("theCaseInsensitiveEnvironment");

  props.setAccessible(true);

  return (Map<String, String>) props.get(null);

  }

}

then you can call it and add the env var you want like this :

MyRoutine.getModifiableEnvironment().put("propName", "propValue");

 !! you will see the folowing warning in the console :

WARNING: An illegal reflective access operation has occurred

WARNING: Illegal reflective access by routines.MyRoutine (file:/C:/Users/workspace/LOCAL_PROJECT/poms/code/routines/target/classes/) to method java.lang.ProcessEnvironment.getenv(java.lang.String)

WARNING: Please consider reporting this to the maintainers of routines.MyRoutine

WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations

WARNING: All illegal access operations will be denied in a future release

as you can see it's note the best recommended method but it work.

if you do System.out.println(System.getenv("propName"));

it will print propValue.

else if you just want to stock a key value use tSetglobalVar component.