import { SelectQuery } from '../models/SelectQuery';
import { TableColumnResolver } from './TableColumnResolver';
/**
 * Options for FilterableItemCollector
 */
export interface FilterableItemCollectorOptions {
    /** If true, return qualified names (table.column), if false return column names only */
    qualified?: boolean;
    /** If true, collect all columns available from upstream sources for maximum search conditions */
    upstream?: boolean;
}
/**
 * Represents a filterable item that can be used in DynamicQueryBuilder
 * Can be either a table column or a SQL parameter
 */
export declare class FilterableItem {
    readonly name: string;
    readonly type: 'column' | 'parameter';
    readonly tableName?: string | undefined;
    constructor(name: string, type: 'column' | 'parameter', tableName?: string | undefined);
}
/**
 * Collects filterable items (columns and parameters) from SQL queries
 * for use in DynamicQueryBuilder filtering functionality.
 *
 * This class combines:
 * - Table columns (from SelectableColumnCollector with FullName duplicate detection)
 * - SQL parameters (from ParameterDetector)
 *
 * Features:
 * - FullName mode preserves columns with same names from different tables (u.id vs p.id)
 * - Upstream collection (default) provides comprehensive column discovery for maximum filtering
 * - Qualified mode option for table.column naming in complex JOINs
 *
 * This allows DynamicQueryBuilder to filter on both actual table columns
 * and fixed parameters defined in the SQL with full JOIN table support.
 */
export declare class FilterableItemCollector {
    private tableColumnResolver?;
    private options;
    /**
     * Creates a new FilterableItemCollector
     * @param tableColumnResolver Optional resolver for wildcard column expansion
     * @param options Optional configuration options
     *   - qualified: If true, return table.column names; if false, return column names only
     *   - upstream: If true (default), collect all available columns from upstream sources for maximum filtering capability
     */
    constructor(tableColumnResolver?: TableColumnResolver, options?: FilterableItemCollectorOptions);
    /**
     * Collects all filterable items (columns and parameters) from a SQL query
     * @param query The parsed SQL query to analyze
     * @returns Array of FilterableItem objects representing columns and parameters
     */
    collect(query: SelectQuery): FilterableItem[];
    /**
     * Collects table columns using both SelectableColumnCollector and SchemaCollector
     */
    private collectColumns;
    /**
     * Attempts to infer table name from query structure for simple cases
     */
    private inferTableNameFromQuery;
    /**
     * Attempts to resolve real table name from alias/namespace
     */
    private getRealTableName;
    /**
     * Extracts real table name from a datasource
     */
    private extractRealTableName;
    /**
     * Collects SQL parameters from the query using ParameterDetector
     */
    private collectParameters;
    /**
     * Removes duplicate items with the same name, type, and table name
     * This preserves columns with the same name from different tables
     */
    private removeDuplicates;
}