/**
 * SQLite 数据库适配器
 *
 * 多后端支持:
 * 1. node:sqlite — Node 22.5+ 内置(零依赖、最快)
 * 2. better-sqlite3 — 兜底(需要 native binding,但更成熟)
 *
 * 通过 detectSqliteBackend() 运行时自动选择。
 */
import { BaseAdapter } from '../base.js';
import type { QueryResult, SchemaInfo, TableInfo } from '../../types/adapter.js';
export declare class SQLiteAdapter extends BaseAdapter {
    private conn;
    private backend;
    private config;
    constructor(config: {
        filePath: string;
        readonly?: boolean;
    });
    /**
     * 连接到 SQLite 数据库
     */
    connect(): Promise<void>;
    /**
     * 断开数据库连接
     */
    disconnect(): Promise<void>;
    /**
     * 执行 SQL 查询
     */
    executeQuery(query: string, params?: unknown[]): Promise<QueryResult>;
    /**
     * 获取数据库结构信息
     */
    getSchema(): Promise<SchemaInfo>;
    /**
     * 清除 Schema 缓存（no-op,保留仅为向后兼容）
     */
    clearSchemaCache(): void;
    /**
     * v4.0.3: fast-path single-table metadata. Public to satisfy DbAdapter.getTableInfo.
     * Internally returns rich {tableInfo, tableForeignKeys}; we strip the wrapper
     * for the interface.
     *
     * v4.0.3.2: Re-throw validateIdentifier errors (security check) but return
     * null for legitimate "table not found" / other failures.
     */
    getTableInfo(tableName: string): Promise<TableInfo | null>;
    /** Internal helper — full info including FKs. Used by getSchema assembly. */
    private _getTableInfo;
    /**
     * 检查是否为写操作
     */
    isWriteOperation(query: string): boolean;
    protected getDialect(): import('../../utils/adapter-factory.js').DbType;
}
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