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From "Kristian Waagan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-3398) Support min/max values for Java types float/double in real/double columns
Date Wed, 13 Feb 2013 10:30:14 GMT

    [ https://issues.apache.org/jira/browse/DERBY-3398?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13577474#comment-13577474

Kristian Waagan commented on DERBY-3398:

I talked briefly to Dag on this topic, and suggested that a deferred check would be somewhat
less user-friendly than an immediate check.

However, the drawbacks of deferred checking in the embedded driver may be acceptable if
  o it makes the drivers behave consistently
  o it simplifies the relevant version check logic in the client driver (i.e. the checking
is only performed on the server side)
> Support min/max values for Java types float/double in real/double columns
> -------------------------------------------------------------------------
>                 Key: DERBY-3398
>                 URL: https://issues.apache.org/jira/browse/DERBY-3398
>             Project: Derby
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions:
>            Reporter: Knut Anders Hatlen
>            Priority: Minor
>              Labels: derby_triage10_10
>         Attachments: derby-3398-2.diff, derby-3398-3.diff, derby-3398-3.stat, derby-3398-4.diff,
derby-3398.diff, derby-3398.status
> Derby doesn't support the entire range of valid (finite) values of the Java primitive
types double/float in columns with SQL type DOUBLE or REAL. This appears to be a limitation
that was introduced for compatibility with DB2. There have been some requests on derby-user
that we lift this restriction.
> The restriction is enforced by the methods normalizeREAL() and normalizeDOUBLE() in org.apache.derby.iapi.types.NumberDataType.

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