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https://issues.apache.org/jira/browse/IGNITE-15253?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrey Mashenkov updated IGNITE-15253:
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Fix Version/s: 3.0.0-alpha3
> Tuple API improvement.
> ----------------------
>
> Key: IGNITE-15253
> URL: https://issues.apache.org/jira/browse/IGNITE-15253
> Project: Ignite
> Issue Type: Improvement
> Reporter: Andrey Mashenkov
> Priority: Major
> Labels: iep-54, ignite-3
> Fix For: 3.0.0-alpha3
>
>
> h3. Motinvation.
> For now, Tuple is an interface and the standard way for creation is to use
> TupleBuilder that can be got using Table API.
> 1. As we thought, normally, Tuple is decoupled from any Ignite internals.
> Our implementation, which is returned from Ignite (e.g. Table API methods),
> may rely on the internals in some cases, e.g. we need a way to wrap table Row
> into Tuple for performance sake.
> This is questionable, let's discuss if Tuple should/can be a public class or
> be mutable or left as is, and then fix it.
> 2. TupleBuilder factory methods in TableView interfaces causes a question:
> Is the builder binded to a particular Table/View? or not?
> As it is possible for a user to pass an arbitrary implementation of Tuple
> (unless Tuple is not a final class or has public constructor), hence we must
> move data validation from Builder to the Table.
> This causes a question: Do we need separate interface Builder or
> MutableTuple?
> h3. Description.
> Let'd discuss questions above and fix it.
> * move Tuple validation from TupleBuilder to Table API.
> * make Tuple.columnIndex() return a primitive (-1 instead of 'null')
> * decouple Tuple from Table API and provide convenient way for Tuple creation.
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