/**
 * @module @nhtio/adk/batteries/vector/mariadb
 *
 * MariaDB adapter (native VECTOR type, 11.7+). Vectors live in a `VECTOR(N)` column written
 * with `VEC_FromText('[...]')` and read with `VEC_ToText(vec)`; KNN uses
 * `VEC_DISTANCE_COSINE` / `VEC_DISTANCE_EUCLIDEAN` ordered ascending. Metadata is a `JSON`
 * column. The neutral filter tree is evaluated with the JS reference evaluator for exact
 * cross-adapter parity. Each collection is a table.
 *
 * Driver: `mariadb` (pure JS, pooled).
 */
import { BaseVectorStore } from "../contract";
import type { SearchPlan, UpsertPlan, DeletePlan, CollectionSpec } from "../plan";
import type { VectorMatch, VectorStoreCapabilities, BaseVectorStoreOptions } from "../types";
export interface MariaDBVectorStoreOptions extends BaseVectorStoreOptions {
    /** Connection and authentication parameters for the backend. */
    connection?: {
        host?: string;
        port?: number;
        user?: string;
        password?: string;
        database?: string;
        connectionLimit?: number;
    };
}
export declare class MariaDBVectorStore extends BaseVectorStore {
    #private;
    readonly capabilities: VectorStoreCapabilities;
    /** Static availability probe: whether this adapter's runtime driver can load in the current environment. */
    static isAvailable(): boolean;
    isAvailable(): boolean;
    connect(): Promise<void>;
    close(): Promise<void>;
    createCollection(spec: CollectionSpec, ifNotExists: boolean): Promise<void>;
    dropCollection(collection: string, ifExists: boolean): Promise<void>;
    hasCollection(collection: string): Promise<boolean>;
    renameCollection(from: string, to: string): Promise<void>;
    executeUpsert(plan: UpsertPlan): Promise<void>;
    executeSearch(plan: SearchPlan): Promise<VectorMatch[]>;
    executeDelete(plan: DeletePlan): Promise<void>;
}