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https://issues.apache.org/jira/browse/TUSCANY-1254?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12494508
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Chris Mildebrandt commented on TUSCANY-1254:
--------------------------------------------

Frank and Fuhwei, you're awesome. It works as expected now. Thank you for the 
very quick turn around time from both of you.

> Codegen on a type inheriting from a type in different namespace will result 
> in mis-mapping the feature IDs
> ----------------------------------------------------------------------------------------------------------
>
>                 Key: TUSCANY-1254
>                 URL: https://issues.apache.org/jira/browse/TUSCANY-1254
>             Project: Tuscany
>          Issue Type: Bug
>          Components: Java SDO Tools
>    Affects Versions: Java-SDO-beta1
>         Environment: WinXP
>            Reporter: Fuhwei Lwo
>         Attachments: open.xsd, open2.xsd, OpenTypeTest.java
>
>
> Based on my observation, there are two sets of feature ID were generated for 
> the Type - 1) ID numbering from EMF 2) ID numbering for SDO. This problem 
> occurs when the child type was codegened, its IDs for SDO were mapped to 
> those from EMF. So when you tried to get the property using dynamic API, 
> since the feature ID is wrong, unpredictable exception will occur. The 
> exception can be NPE or ClassCastException depending on the characteristic of 
> the wrong ID.

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