DOYUNG YOON created S2GRAPH-44:
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Summary: Provide cache for WhereParser on query.
Key: S2GRAPH-44
URL: https://issues.apache.org/jira/browse/S2GRAPH-44
Project: S2Graph
Issue Type: Improvement
Reporter: DOYUNG YOON
Assignee: DOYUNG YOON
Currently, we are building WhereParser on every request and scala parser
combinator is notorious for it's slow performance. Actually we don't have to
build WhereParser on every request.
WhereParser is dependent only on Label and where clause string. so I think it
is better to provide parser cache with following key. note that Where class do
not contain actual data, but expect caller to provide edge to check if given
edge should be included or not.
Key: labelName + where clause string.
Value: Where class that hold structure for filtering.
I think this can be important performance improvement and easy to implement.
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