import { DuckDBService } from '../duckdb/service.js';
import { MCPClient } from './MCPClient.js';
import { MappedResource } from './ResourceMapper.js';
/**
 * Configuration for virtual tables
 */
export interface VirtualTableConfig {
    autoRefresh?: boolean;
    refreshInterval?: number;
    lazyLoad?: boolean;
    maxRows?: number;
}
/**
 * Represents a virtual table backed by an MCP resource
 */
export interface VirtualTable {
    name: string;
    resourceUri: string;
    serverAlias?: string;
    config: VirtualTableConfig;
    metadata: MappedResource;
    refreshTimer?: ReturnType<typeof setInterval>;
}
/**
 * Manages virtual tables that are backed by MCP resources
 */
export declare class VirtualTableManager {
    private virtualTables;
    private duckdb;
    private mcpClient;
    private resourceMapper;
    constructor(duckdb: DuckDBService, mcpClient: MCPClient);
    /**
     * Create a virtual table from an MCP resource
     */
    createVirtualTable(tableName: string, resourceUri: string, serverAlias?: string, config?: VirtualTableConfig): Promise<VirtualTable>;
    /**
     * Load a lazy-loaded virtual table
     */
    loadVirtualTable(tableName: string): Promise<void>;
    /**
     * Refresh a virtual table with latest data
     */
    refreshVirtualTable(tableName: string): Promise<void>;
    /**
     * Drop a virtual table
     */
    dropVirtualTable(tableName: string): Promise<void>;
    /**
     * Get virtual table information
     */
    getVirtualTable(tableName: string): VirtualTable | undefined;
    /**
     * List all virtual tables
     */
    listVirtualTables(): VirtualTable[];
    /**
     * Execute a hybrid query across local and virtual tables
     */
    executeHybridQuery(sql: string): Promise<any[]>;
    /**
     * Create a materialized view from a virtual table
     */
    materializeVirtualTable(virtualTableName: string, materializedName: string): Promise<void>;
    /**
     * Update virtual table configuration
     */
    updateVirtualTableConfig(tableName: string, config: Partial<VirtualTableConfig>): void;
    /**
     * Clean up all virtual tables
     */
    cleanup(): Promise<void>;
}
//# sourceMappingURL=VirtualTable.d.ts.map