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https://issues.apache.org/jira/browse/SOLR-2785?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13109012#comment-13109012
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Hoss Man commented on SOLR-2785:
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the DateMathParser is not about supporting timezones, it's just a syntax that
is supported for modifying dates so clients don't have to do the math
themselves (ie in in range queries you can do "myField:[NOW/HOUR TO
NOW/HOUR+1HOUR]" etc...)
the decision to only support canonical UTC in the DateField format is very
deliberate because it removes any ambiguity and concerns about expecatations of
parsing/formatting (ie: if a user indexes doc A using a TZ of "+07:00" and doc
B using a TZ of "-04:00" will the expect searches matching those docs to have
those exact values as the stored field in the result? if all docs were indexed
using the same TZ, will users expect faceting to implicitly use that TZ?
the point of the canonical format is to force the client(s) to be aware that in
the index, everything is in UTC.
if you are interested in helping to support dealing with other date formats and
parsing of timezones in insides solr -- but at a higher level then the
DateField class -- those features are definitely desirable. See SOLR-2690 for
more discussion
> DateField timezone handling
> ---------------------------
>
> Key: SOLR-2785
> URL: https://issues.apache.org/jira/browse/SOLR-2785
> Project: Solr
> Issue Type: Bug
> Components: Schema and Analysis
> Affects Versions: 3.3
> Environment: Debian Gnu/Linux, OpenJDK Runtime Environment 14.0-b16
> Reporter: Howard Cox
> Priority: Minor
> Labels: datetime, datetimes, schema
>
> The Solr DateField appears to only be partially ISO 8601 compliant.
> The DateMathParser requires Timezone modifications to be in the format
> "+nMINUTES", "+xHOURS", "+yDAYS" etc.
> [http://lucene.apache.org/solr/api/org/apache/solr/schema/DateField.html]
> ISO 6801 states that timezone modifications should be in the format +00:01,
> +01:00
> [http://en.wikipedia.org/wiki/ISO_8601#Time_offsets_from_UTC]
> It would be useful if Solr DateField could parse both (I presume there's a
> reason for +nMINUTE etc somewhere in Java.)
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