[hibernate-issues] [Hibernate-JIRA] Commented: (HV-533) @Digits.fraction should allow negative values

[Hardy Ferentschik (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HV-533?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=45055#comment-45055 ] 

Hardy Ferentschik commented on HV-533:
--------------------------------------

To be clear, there is violation against the spec. The section you are referring to starts with 
{quote}
Ideas explored and not standardized
{quote}

Also, I don't think you can treat these two lines as mathematical equations you can solve. 

> @Digits.fraction should allow negative values
> ---------------------------------------------
>
>                 Key: HV-533
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HV-533
>             Project: Hibernate Validator
>          Issue Type: Bug
>          Components: documentation, validators
>    Affects Versions: 4.2.0.Final
>            Reporter: Devesh Parekh
>
> There are really two bugs here:
> 1. The documentation for @Digits.fraction does not concretely say what should happen for negative values, but the 1.0 final spec defines the correct behavior on page 133 with the equation @Column.precision = @Digits.integer + @Digits.fraction. This suggests that @Digits.fraction should be negative when @Column.scale is negative.
> 2. The implementation throws an IllegalArgumentException when @Digits.fraction is negative.

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