Andrey Mashenkov created IGNITE-15949:
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Summary: Support class hierarchy in Mappers.
Key: IGNITE-15949
URL: https://issues.apache.org/jira/browse/IGNITE-15949
Project: Ignite
Issue Type: Improvement
Reporter: Andrey Mashenkov
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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