Miguel Alvarez created UIMA-4783:
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Summary: Ruta: Instantiate external engines only once when
reloadScript=true
Key: UIMA-4783
URL: https://issues.apache.org/jira/browse/UIMA-4783
Project: UIMA
Issue Type: Improvement
Components: ruta
Affects Versions: 2.3.1ruta
Reporter: Miguel Alvarez
Priority: Minor
We are currently setting the parameter reloadScript to true in our RUTA engines
so the dictionaries reload without us having to restart the service.
But we have some external engines, invoked from RUTA scripts, which create
connections to other servers, and until now we have been storing this
connections as class instance variables in our external engines so they can be
reused and the engine doesn't need to create a new connection for every
document processed. And the initialize method checks whether the engine
instance has already an open connection, so no matter how many times the
initialize method is invoked only one connection is established.
But if we invoke this external engine from a RUTA script that has the
reloadScript parameter set to true, a new instance of the engine is created for
every document processed, and therefore a new connection to the remote server
will be established for each document too, regardless of the check for an
existing connection in the initialize method.
So for external engines that store some sort of state in instance variables, it
would be great if RUTA only created one instance when the reloadScript is set
to true.
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