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From "Mark Miller (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-1653) Change DateTools to not create a Calendar in every call to dateToString or timeToString
Date Tue, 26 May 2009 16:43:45 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-1653?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12713098#action_12713098
] 

Mark Miller commented on LUCENE-1653:
-------------------------------------

Why is this synchronized?

+  public static synchronized Date round(Date date, Resolution resolution) {
     return new Date(round(date.getTime(), resolution));
   }


> Change DateTools to not create a Calendar in every call to dateToString or timeToString
> ---------------------------------------------------------------------------------------
>
>                 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
>
>         Attachments: LUCENE-1653.patch
>
>
> 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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