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https://issues.apache.org/jira/browse/IGNITE-15833?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17443777#comment-17443777
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Konstantin Orlov commented on IGNITE-15833:
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[~Berkov], licenses have been added.
Folks, thanks for review. Merged to master.
> Provide interfaces for SQL Extension API
> ----------------------------------------
>
> Key: IGNITE-15833
> URL: https://issues.apache.org/jira/browse/IGNITE-15833
> Project: Ignite
> Issue Type: Sub-task
> Reporter: Konstantin Orlov
> Assignee: Konstantin Orlov
> Priority: Major
> Labels: ignite-3
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> During this task we need to provide minimal yet sufficient interfaces to make
> extension possible. Followed aspects should be covered:
> # Interface of the plugin (draft could be found in parent ticket)
> # Interface to implement by relational nodes. Looks like we have to use
> IgniteRel here, but it comes at cost of lost validation: IgniteConvention
> uses this interface to validate the convention is set for proper rel. Need to
> think about this.
> # Interface of the schema. In the prototype the
> org.apache.calcite.schema.SchemaPlus is used, but it doesn't look as a good
> decision.
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