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From "David Smiley (JIRA)" <>
Subject [jira] [Updated] (SOLR-8903) Move SolrJ DateUtil to Extraction module as ExtractionDateUtil
Date Tue, 29 Mar 2016 13:31:25 GMT


David Smiley updated SOLR-8903:
    Attachment: SOLR_8903.patch

Updated patch which moves DateUtil to the extraction module as ExtractionDateUtil.  It depends
on SOLR-8904 in that some call sites into DateUtil are updated in that patch, not this one
now.  DateMathParser is not referred to at all.  I also added some tests, ported from DateMathParserTest.

Suggested CHANGES.txt:
(in upgrading)
* SolrJ no longer includes DateUtil.  If for some reason you need to format or parse dates,
simply use Instant.format() and Instant.parse().

(in other)
* SOLR-8904: DateUtil in SolrJ moved to the extraction contrib as ExtractionDateUtil.  Obsolete
methods were removed.

> Move SolrJ DateUtil to Extraction module as ExtractionDateUtil
> --------------------------------------------------------------
>                 Key: SOLR-8903
>                 URL:
>             Project: Solr
>          Issue Type: Task
>          Components: SolrJ
>            Reporter: David Smiley
>            Assignee: David Smiley
>             Fix For: 6.0
>         Attachments: SOLR_8903.patch, SOLR_8903_DateUtil_deprecate.patch
> SolrJ doesn't need a DateUtil class, particularly since we're on Java 8 and can simply
use {{new Date(Instant.parse(d).toEpochMilli());}} for parsing and {{DateTimeFormatter.ISO_INSTANT.format(d.toInstant())}}
for formatting.  Yes, they are threadsafe.  I propose that we deprecate DateUtil from SolrJ,
or perhaps outright remove it from SolrJ for Solr 6.  The only SolrJ calls into this class
are to essentially use it to format or parse in the ISO standard format.
> I also think we should move it to the "extraction" (SolrCell) module and name it something
like ExtractionDateUtil.  See, this class has a parse method taking a list of formats, and
there's a static list of them taken from HttpClient's DateUtil.  DateUtil's original commit
was SOLR-284 to be used by SolrCell, and SolrCell wants this feature.  So I think it should
move there.
> There are a few other uses:
> * Morphlines uses it, but morphlines depends on the extraction module so it could just
as well access it if we move it there.
> * The ValueAugmenterFactory (a doc transformer).  I really doubt whoever added it realized
that DateUtil.parseDate would try a bunch of formats instead of only supporting the ISO canonical
format.  So I think we should just remove this reference.
> * DateFormatUtil.parseMathLenient falls back on this, and this method is in turn called
by just one caller -- DateValueSourceParser, registered as {{ms}}.  I don't think we need
leniency in use of this function query; values given to ms should be computer generated in
the ISO format.
> ----
> edit: added ms().

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