[GitHub] metron issue #740: METRON-1167 Define Session Specific Global Configuration ...

[cestella]

Github user cestella commented on the issue:

    https://github.com/apache/metron/pull/740
  
    So, one way to do this is to allow users to refer to stellar fields:
    ```
    my_complex_field := { 'blah' : 7 }
    %define nicks_new_global_field=&my_complex_field
    ```
    
    Another option to support this is to just insist that `%define` is a string 
and you have a `replace_global` that takes a field as an argument and the field 
contains the new global config (in JSON form) and replaces the global config:
    ```
    new_global_config := SHELL_EDIT()
    %replace_global new_global_config
    ```



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