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https://issues.apache.org/jira/browse/IGNITE-15949?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrey Mashenkov updated IGNITE-15949:
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Summary: Support inherited classes in Mappers. (was: Support class
hierarchy in Mappers.)
> Support inherited classes in Mappers.
> -------------------------------------
>
> Key: IGNITE-15949
> URL: https://issues.apache.org/jira/browse/IGNITE-15949
> Project: Ignite
> Issue Type: Improvement
> Reporter: Andrey Mashenkov
> Priority: Major
> Labels: iep-54, ignite-3
>
> Mappers support only POJOs that extend the Object class.
> It looks possible to map more complex objects to the table columns.
> E.g. class B in the code example below, could be mapped to the schema with
> columns
> {f1:INT32, f2: INT64}
> However, parent fields could be hidden in descendants (see class C in the
> example below). The default behavior in the case should be failing.
> One could use annotations to map hidden fields to a different column,
> but there should be a way to express this programmatically with a mapper
> (without annotations).
> {code:java}
> class A {
> int f1;
> }
> class B extends A {
> long f2
> }
> class C extends A {
> int f1; // Hides field A.f1
> }
> {code}
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