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https://issues.apache.org/jira/browse/ISIS-215?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dan Haywood closed ISIS-215.
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> Change way that SQL objectstore determines the properties of an object to be 
> persisted
> --------------------------------------------------------------------------------------
>
>                 Key: ISIS-215
>                 URL: https://issues.apache.org/jira/browse/ISIS-215
>             Project: Isis
>          Issue Type: Improvement
>          Components: ZZZ Mothballed: Objectstore: SQL
>    Affects Versions: 0.2.0-incubating
>            Reporter: Dan Haywood
>            Assignee: Dan Haywood
>            Priority: Minor
>
> Noticed that in some circumstances the database table that SQL object store 
> attempts to create had duplicate column names.  Tracked this behaviour down 
> to the logic within 
> org.apache.isis.runtimes.dflt.objectstores.sql.auto.AbstractAutoMapper - the 
> setUpFieldMappers() method can be called into recursively, meaning that the 
> simple aggregation of columns into a list (as then used by the 
> setUpFullMapping method is not sufficient).
> Although I don't understand everything that is going on here, it seems that a 
> safer way to proceed is to use a Map and to key the elements by the 
> ObjectAssociation (ie property); that way there can only ever be one "thing" 
> added per processed field.



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