Module asof_join 

Hash map for AsOf join with optional LRU cache support.

When cache is disabled, the hash map directly queries the state table. When cache is enabled, it maintains a ManagedLruCache that caches all rows for each join key, indexed by (inequality_key, pk_suffix) for efficient range queries.

Structs

AsOfCpuEncoding

CPU-optimized encoding: stores full OwnedRow in cache (no encode/decode cost).

AsOfJoinCacheEntry

A cache entry for a single join key, storing all encoded rows indexed by (inequality_key, pk_suffix). The outer BTreeMap gives efficient range queries on inequality keys; the inner JoinRowSet adaptively uses Vec for small pk sets and BTreeMap for larger ones.

AsOfJoinHashMap

A hash map for AsOf join with optional LRU cache support.

AsOfJoinHashMapPostCommit

AsOfMemoryEncoding

Memory-optimized encoding: stores CompactedRow (serialized bytes) in cache.

Traits

AsOfRowEncoding

Trait for encoding/decoding cached AsOf join rows. Unlike JoinEncoding, this doesn’t carry degree since AsOf join has no degree tracking.

Type Aliases

InequalKeyBytes 🔒

Memcomparable encoding for inequality key and pk suffix.

PkSuffixBytes 🔒