uschindler commented on a change in pull request #1837:
URL: https://github.com/apache/lucene-solr/pull/1837#discussion_r484223373



##########
File path: 
lucene/expressions/src/java/org/apache/lucene/expressions/js/JavascriptCompiler.java
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@@ -206,6 +247,12 @@ private Expression compileExpression(ClassLoader parent) 
throws ParseException {
       throw new IllegalStateException("An internal error occurred attempting 
to compile the expression (" + sourceText + ").", exception);
     }
   }
+  

Review comment:
       I changed it. The way how to do this is correct as it only intends to 
work around a problem of type inference in javac. For a methodhandle we know 
for sure, which exceptions are thrown (it's different to core reflection, where 
everything is wrapped in InvocationTargetException).
   
   I moved the whole thing to a separate method and I catched and rethrow all 
"known" Exceptions (IllegalAccessException, RuntimeException, Error), all 
others can't happen, so it wraps with AssertionError.




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