Joel Richard created SLING-4591:
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Summary: Performance: Consider using a faster empty map in
ResourceMetadata#setParameterMap
Key: SLING-4591
URL: https://issues.apache.org/jira/browse/SLING-4591
Project: Sling
Issue Type: Improvement
Components: API
Affects Versions: API 2.9.0
Reporter: Joel Richard
Priority: Minor
ResourceMetadata#setParameterMap is called several thousand times per request.
In my case the passed parameterMap is always empty. Since it has to create a
new empty LinkedHashMap for each call, 1-2% of the rendering time is spent in
this method.
Therefore, I would suggest to either ignore empty maps or use
Collections.emptyMap() instead. Both solutions should work if the caller does
not make any undocumented assumptions for getParameterMap().
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