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From "Alexandr Fedotov (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (IGNITE-4172) SQL: Add support for Java 8 Time API classes in date\time functions
Date Wed, 02 Aug 2017 20:13:00 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-4172?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16110663#comment-16110663
] 

Alexandr Fedotov edited comment on IGNITE-4172 at 8/2/17 8:12 PM:
------------------------------------------------------------------

Apart from the improvements introduced by [IGNITE-5483|https://issues.apache.org/jira/browse/IGNITE-5483]
the following should be addressed:
1. {{java.time.LocalTime}}, {{java.time.LocalDate}}, {{java.time.LocalDateTime}} are not supported
as cache values or keys.
2. {{java.time.LocalTime}} is stored as {{java.sql.Time}}, {{java.time.LocalDate}} as {{java.sql.Date}},
 {{LocalDateTime}}  as {{Timestamp}}.
Having, for example, {{IgniteCache<Long, Person>}} where {{Person}} has a {{java.time.LocalDateTime}}
field, trying to select that field with a query like  {{select locDateTime from Person}} will
return {{java.sql.Timestamp}} value.



was (Author: asfedotov):
Apart from the improvements introduced by [IGNITE-5483|https://issues.apache.org/jira/browse/IGNITE-5483]
the following should be addressed:
1. {{java.time.LocalTime}}, {{java.time.LocalDate}}, {{java.time.LocalDateTime}} are not supported
as cache values or keys.
2. LocalDateTime is stored as Timestamp, which should be accounted when applying a custom
SQL functions. Probably that's a tradeoff for the moment.


> SQL: Add support for Java 8 Time API classes in date\time functions
> -------------------------------------------------------------------
>
>                 Key: IGNITE-4172
>                 URL: https://issues.apache.org/jira/browse/IGNITE-4172
>             Project: Ignite
>          Issue Type: Bug
>            Reporter: Andrew Mashenkov
>            Assignee: Alexandr Fedotov
>             Fix For: 2.2
>
>
> We have is issue with querying LocalDateTime objects with our SQL engine. 
> Next query can fails with error, if one of row localDateTimeField value has zero-time:

> select DATEDIFF('DAY', localDateTimeField, CURRENT_DATE ()) from t;
> Startpoint is IgniteH2Indexing.wrap() method. 
> We need add support to these classes: LocalDate, LocalTime, LocalDateTime.



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