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From "Oleg Kalnichevski (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HTTPCLIENT-1227) DateUtils parsing triggers ParseExceptions
Date Thu, 30 Aug 2012 13:41:08 GMT

     [ https://issues.apache.org/jira/browse/HTTPCLIENT-1227?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Oleg Kalnichevski resolved HTTPCLIENT-1227.
-------------------------------------------

       Resolution: Fixed
    Fix Version/s: 4.3 Alpha1

Good patch! Thank you for contributing it! Committed to both trunk and 4.2.x branch.

Oleg
                
> DateUtils parsing triggers ParseExceptions
> ------------------------------------------
>
>                 Key: HTTPCLIENT-1227
>                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1227
>             Project: HttpComponents HttpClient
>          Issue Type: Improvement
>    Affects Versions: 4.1.3, 4.2.1, 4.2.2, 4.3 Final
>            Reporter: Patrick Linskey
>             Fix For: 4.2.2, 4.3 Alpha1
>
>         Attachments: faster-dates.patch
>
>
> DateUtils.DEFAULT_PATTERNS is not in the same order as the HTTP header spec [1], and
uses a SimpleDateFormat.parse() method that creates exceptions. The upshot is that in the
common case, extra parsing must happen, and an exception must be created (and its stack must
be filled in). This leads to unfortunate additional CPU overhead.
> [1] http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.3.1

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