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https://issues.apache.org/jira/browse/OLINGO-1129?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ramya resolved OLINGO-1129.
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Resolution: Fixed
> ODataJsonSerializer Does Not Support Derived Type in $expand Option
> -------------------------------------------------------------------
>
> Key: OLINGO-1129
> URL: https://issues.apache.org/jira/browse/OLINGO-1129
> Project: Olingo
> Issue Type: New Feature
> Components: odata4-server
> Affects Versions: (Java) V4 4.3.0
> Reporter: Hui Wang
> Priority: Minor
>
> Currently we need to use type casting to a derived type in $expand. Here is
> the corresponding part in the OData Protocol.
> http://docs.oasis-open.org/odata/odata/v4.0/errata03/os/complete/part2-url-conventions/odata-v4.0-errata03-os-part2-url-conventions-complete.html#_Toc453752352
> To reproduce:
> Here is an example URL provided in the documentation that could be used for
> reproducing the defect:
> http://host/service/Orders?$expand=Customer/Model.VipCustomer
> In the current 4.3 version, ODataJsonSerializer only deals with expand on
> Customer but ignores the type filter Model.VipCustomer. It means, the
> response would only show the content of super type Customer. Any custom
> properties in derived type VipCustomer wouldn't be returned.
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