Guillaume Smet created LUCENE-7058:
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             Summary: Add getters for the properties of several Query 
implementations
                 Key: LUCENE-7058
                 URL: https://issues.apache.org/jira/browse/LUCENE-7058
             Project: Lucene - Core
          Issue Type: Improvement
          Components: core/query/scoring
            Reporter: Guillaume Smet


Hi!

At Hibernate Search, we are currently working on an Elasticsearch backend 
(aside from the existing Lucene backend).

As part of this effort, to provide a smooth migration path, we need to be able 
to rewrite the Lucene queries as Elasticsearch queries. We know it will be 
neither perfect or comprehensive but we want it to be the best possible 
experience.

It works well in many cases but several implementations of Query don't have the 
necessary getters to be able to extract the information from the Query.

The attached patch add getters to several implementations of Query. It would be 
nice if it could be applied.

Any chance it could be applied to the next point release too? (probably not but 
I'd better ask).



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