Add support for wrapping ItemReaderAdapters collection results to Items [BATCH-1557]

[spring-projects-issues]

David J. M. Karlsen opened BATCH-1557 and commented

Very often ItemReaderAdapters are used to wrap calls to "normal" Daos.
A very common usecase for a dao is to return a Collection from a query.
It would be nice if the ItemReaderAdapter could unwrap the collection and return single Items from the collection, for instance by usage of the ListItemReader (which would better be a CollectionItemReader - I use TreeSets) - but this is not possible out of the box through configuration only.

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Affects: 2.1.0

Attachments:

• CollectionUnwrappingDelegatingItemReader.java (2.32 kB)

[spring-projects-issues]

David J. M. Karlsen commented

Here is a sketch of it.