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https://issues.apache.org/jira/browse/OLINGO-931?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15239881#comment-15239881
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Michael Bolz commented on OLINGO-931:
-------------------------------------
Hi [~anirbanda...@gmail.com],
Maybe my answer was not clear enough ;o)
However, as mentioned by [~rareddy], in the case that not all key predicates
are selected, the "Id" value must be set at the {{Entity}}.
The "fix" for this issue would (IMHO) to throw a meaningful
{{SerializerException}} instead of a NPE.
Because with no available "Id" value the serializer must throw an exception.
Best Regards, Michael
> $select does not work with JsonSerializer
> -----------------------------------------
>
> Key: OLINGO-931
> URL: https://issues.apache.org/jira/browse/OLINGO-931
> Project: Olingo
> Issue Type: Bug
> Components: odata4-server
> Affects Versions: (Java) V4 4.2.0
> Reporter: Anirban Das
>
> When we fire a Odata request whith $select and requested format as json
> for eg
> /Customer?$select=Type,CustomerName&$format=json
> The OdataSerializer throws a null pointer exception. Alson Note when
> requesting a xml format there is no issue with the request above and gives
> back the result correctly
> StackTrace for reference::
> java.lang.NullPointerException
> at
> org.apache.olingo.server.core.serializer.json.ODataJsonSerializer.writeEntity(ODataJsonSerializer.java:329)
> at
> org.apache.olingo.server.core.serializer.json.ODataJsonSerializer.writeEntitySet(ODataJsonSerializer.java:273)
> at
> org.apache.olingo.server.core.serializer.json.ODataJsonSerializer.writeExpandedNavigationProperty(ODataJsonSerializer.java:459)
> at
> org.apache.olingo.server.core.serializer.json.ODataJsonSerializer.writeNavigationProperties(ODataJsonSerializer.java:420)
> at
> org.apache.olingo.server.core.serializer.json.ODataJsonSerializer.writeEntity(ODataJsonSerializer.java:332)
> at
> org.apache.olingo.server.core.serializer.json.ODataJsonSerializer.writeEntitySet(ODataJsonSerializer.java:273)
> at
> org.apache.olingo.server.core.serializer.json.ODataJsonSerializer.entityCollection(ODataJsonSerializer.java:165)
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