matchFilter
function matchFilter(metadata, filter): boolean;In-memory evaluator for the canonical VectorFilter shape.
Runs a MongoDB-style filter against a plain metadata record and returns
whether the record matches. Used by in-process vector stores
(InMemoryVectorStore) and any downstream adapter that must re-filter
results after a backend-level query — e.g. when the backend supports
only a subset of operators and the remainder must be applied in memory.
Operator coverage matches the translators in ./sql.ts, ./lancedb.ts,
and peers: $eq, $ne, $gt, $gte, $lt, $lte, $in, $nin,
$exists, plus the logical combinators $and, $or, $not.
Parameters
Section titled “Parameters”| Parameter | Type |
|---|---|
|
|
|
|
|
Returns
Section titled “Returns”boolean