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https://issues.apache.org/jira/browse/OPENJPA-2280?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13569033#comment-13569033
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Pinaki Poddar commented on OPENJPA-2280:
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The discipline with BigDecimal values should be as follows

1. The database column is defined with DECIMAL(p,s) where <p> is the precision 
and <s> is the scale as defined in the @Column metadata
2. Irrespective of the scale of the value is set into a BigDecimal field in the 
POJO x, the return value of the BigDecimal field always must be of the same 
scale <s>
3. Rule #1 and #2 is ignored if the storeLargeNumberAsString property is set in 
Database dictionary.

Do you agree?  
                
> MappingTool ignores column precision / scale for some databases
> ---------------------------------------------------------------
>
>                 Key: OPENJPA-2280
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-2280
>             Project: OpenJPA
>          Issue Type: Bug
>          Components: tooling
>    Affects Versions: 1.2.3, 2.3.0, 2.2.1
>            Reporter: Rick Curtis
>
> This JIRA is the same issue as reported by OPENJPA-1224.

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