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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-3398) Support min/max values for Java types float/double in real/double columns
Date Tue, 19 Feb 2013 09:11:14 GMT

    [ https://issues.apache.org/jira/browse/DERBY-3398?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13581143#comment-13581143
] 

Knut Anders Hatlen commented on DERBY-3398:
-------------------------------------------

Thanks, Dag.

The patch looks fine to me. You may want to double-check if it builds if you have the j15lib
property defined. I suspect it may fail because the tests directly reference the MIN_NORMAL
constants, which are new in Java 6.

In the release note, the summary is supposed to be a single sentence that fits on a single
line, so that the release note generator can put it into a bullet list. Maybe just keep the
first sentence and move the extra details to the symptoms section?

Typo in incompatibilities section: "can no" -> "cannot" or, perhaps, "can no longer"?

In Application Changes Required section: "to detect when use of numbers outside the DB2 limits
were used". Drop "use of"?
                
> 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: 10.4.1.3
>            Reporter: Knut Anders Hatlen
>            Assignee: Dag H. Wanvik
>            Priority: Minor
>              Labels: derby_triage10_10
>         Attachments: derby-3398-2.diff, derby-3398-3.diff, derby-3398-3.stat, derby-3398-4.diff,
derby-3398-5.diff, derby-3398-5.stat, derby-3398-7.diff, derby-3398-7.stat, derby-3398.diff,
derby-3398.status, releaseNote.html
>
>
> 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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