Scala Scripting: Make all types of the script arguments visible on the Scala
side
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Key: SLING-1236
URL: https://issues.apache.org/jira/browse/SLING-1236
Project: Sling
Issue Type: Improvement
Components: Scripting
Reporter: Michael Dürig
Priority: Minor
Currently the Scala scripting engine inserts a preamble for the bindings passed
to a Script. The preamble contains a declaration of the following form for each
value in the Bindings instance:
val request: SlingHttpServletRequest =
bindings.get("request").asInstanceOf[SlingHttpServletRequest]
The types are hard coded in the ScalaScriptEngine.TypeHints class. For unknown
types a declaration of type AnyRef is inserted into the preamble.
I suggest to implement a run time type discovery algorithm which discovers the
accessible type from a given instance and inserts the respective declarations
into the preamble. That way the static coupling between the known values in
Bindings and its types would go away. Furthermore the values would be of a type
appearing to be of all the visible types on the Scala side.
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