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https://issues.apache.org/jira/browse/ARROW-7945?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17045585#comment-17045585
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Krisztian Szucs commented on ARROW-7945:
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We also should have convenience factories for InMemoryDataset, see discussion
https://github.com/apache/arrow/pull/6470/files/881ee8538a2cd0c3173feb9c370b5da69388b5f4#r384503399
{code:cpp}
InMemoryDataset::Make(Table);
InMemoryDataset::Make(std::vector<RecordBatch>); // all record batches should
have the same schema
{code}
> [C++][Dataset] Implement InMemoryDatasetFactory
> -----------------------------------------------
>
> Key: ARROW-7945
> URL: https://issues.apache.org/jira/browse/ARROW-7945
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++, C++ - Dataset
> Affects Versions: 0.16.0
> Reporter: Ben Kietzman
> Assignee: Ben Kietzman
> Priority: Major
> Fix For: 1.0.0
>
>
> This will allow in memory datasets (such as tables) to participate in
> discovery through {{UnionDatasetFactory}}. This class will be trivial since
> Inspect will do nothing but return the table's schema, but is necessary to
> ensure that the resulting {{UnionDataset}}'s unified schema accommodates the
> table's schema (for example including fields present only in the table's
> schema or emitting an error when unification is not possible)
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