This commit introduces ReflectiveIndexAccessor for the Spring
Expression Language (SpEL) which is somewhat analogous to the
ReflectivePropertyAccessor implementation of PropertyAccessor.
ReflectiveIndexAccessor is a flexible IndexAccessor implementation that
uses reflection to read from and optionally write to an indexed
structure of a target object. ReflectiveIndexAccessor also implements
CompilableIndexAccessor in order to support compilation to bytecode for
read access.
For example, the following creates a read-write IndexAccessor for a
FruitMap type that is indexed by Color, including built-in support for
compilation to bytecode for read access.
IndexAccessor indexAccessor = new ReflectiveIndexAccessor(
FruitMap.class, Color.class, "getFruit", "setFruit");
Closes gh-32714
35c183d634