Change DateTools to not create a Calendar in every call to dateToString or
timeToString
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Key: LUCENE-1653
URL: https://issues.apache.org/jira/browse/LUCENE-1653
Project: Lucene - Java
Issue Type: Improvement
Components: Other
Reporter: Shai Erera
Priority: Minor
Fix For: 2.9
DateTools creates a Calendar instance on every call to dateToString and
timeToString. Specifically:
# timeToString calls Calendar.getInstance on every call.
# dateToString calls timeToString(date.getTime()), which then instantiates a
new Date(). I think we should change the order of the calls, or not have each
call the other.
# round(), which is called from timeToString (after creating a Calendar
instance) creates another (!) Calendar instance ...
Seems that if we synchronize the methods and create the Calendar instance once
(static), it should solve it.
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