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https://issues.apache.org/jira/browse/OLINGO-1009?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15474101#comment-15474101
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Christian Amend commented on OLINGO-1009:
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I think that it would be better if it is configurable. You could make it
configurable by adding a setting to the serializer or by making it a parameter
of the EntityCollectionSerializerOptions and the EntitySerializerOptions.
The question I have is about the default. Lets assume someone has implemented a
service with version 4.2.0 which includes a generic SQL statement creation. In
this case a client could crash the service by requesting max levels. What would
you think of either a small default value e.g. 3-4 levels or making the default
0 and a service developer has to specify max levels explicitly by changing the
configuration?
Thanks & Best Regards,
Christian
> Provide serilization support for $levels with $expand
> -----------------------------------------------------
>
> Key: OLINGO-1009
> URL: https://issues.apache.org/jira/browse/OLINGO-1009
> Project: Olingo
> Issue Type: New Feature
> Components: odata4-server
> Affects Versions: (Java) V4 4.0.0-beta-01
> Reporter: Ramesh Reddy
> Assignee: Ramesh Reddy
> Fix For: (Java) V4 4.3.0
>
>
> Currently Olingo parses the query with $expand with $levels construct,
> however if the payload contains the nesting of the entities, it does not
> serialize to the defined $levels
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