Overview

Now that we've introduced the IndexAccessor SPI in the Spring Expression Language (SpEL), we should introduce support for compiling expressions that use a custom IndexAccessor, analogous to the CompilablePropertyAccessor SPI that a PropertyAccessor can optionally implement.

Related Issues

• Introduce IndexAccessor SPI to customize the SpEL Indexer #26478
• SpEL compilation fails when indexing into an array or list with an Integer #32694
• Make SpelNode compilation aware #32707
• Introduce generateCodeForArgument() in CodeFlow #32708
• Introduce ReflectiveIndexAccessor convenience class in SpEL #32714

Deliverables

• Introduce CompilableIndexAccessor SPI in SpEL.