Shared expression utilities for building typed predicates over Arrow data.

The crate exposes three building blocks:

• expr defines a logical predicate AST that is independent of concrete Arrow scalar types.
• literal holds untyped literal values plus conversion helpers.
• typed_predicate turns logical operators into type-aware predicates that can be evaluated without additional allocations.

All modules are re-exported from the crate root so downstream users can pull the pieces they need with a single import.

LLKV Expr

llkv-expr defines an expression Abstract Syntax Tree (AST) used across the LLKV database toolkit. It provides type-aware, expression structures that decouple logical expressions from concrete evaluation strategies.

This crate is not intended for direct standalone use.

License

Licensed under the Apache-2.0 License.