import { O_CREATE_TABLE_CREATE_DEFINITION, P_CREATE_INDEX, O_CREATE_TABLE_CREATE_DEFINITION_UNIQUE_KEY, O_ALTER_TABLE_SPEC_ADD_UNIQUE_KEY, UniqueKeyInterface } from '../../../../typings';
import { UniqueKeyModelInterface, IndexColumnModelInterface, IndexOptionsModelInterface, TableModelInterface, ColumnModelInterface } from './typings';
/**
 * Unique key of a table.
 */
export declare class UniqueKey implements UniqueKeyModelInterface {
    name?: string;
    indexType?: string;
    columns: IndexColumnModelInterface[];
    options?: IndexOptionsModelInterface;
    /**
     * Creates a unique key from a JSON def.
     *
     * @param json JSON format parsed from SQL.
     */
    static fromDef(json: O_CREATE_TABLE_CREATE_DEFINITION | P_CREATE_INDEX): UniqueKey;
    /**
     * Creates an unique key from an object containing needed properties.
     *
     * @param json Object containing properties.
     */
    static fromObject(json: P_CREATE_INDEX['def'] | O_CREATE_TABLE_CREATE_DEFINITION_UNIQUE_KEY | O_ALTER_TABLE_SPEC_ADD_UNIQUE_KEY): UniqueKey;
    /**
     * JSON casting of this object calls this method.
     */
    toJSON(): UniqueKeyInterface;
    /**
     * Create a deep clone of this model.
     */
    clone(): UniqueKey;
    /**
     * Drops a column from key. Returns whether column was removed.
     *
     * @param name Column name to be dropped.
     */
    dropColumn(name: string): boolean;
    /**
     * Get the columns in given table which this
     * unique key's index columns refer to.
     *
     * @param table Table in question.
     */
    getColumnsFromTable(table: TableModelInterface): ColumnModelInterface[];
    /**
     * Whether the given table has all of this unique key's columns.
     *
     * @param table Table in question.
     */
    hasAllColumnsFromTable(table: TableModelInterface): boolean;
    /**
     * Set size of this index to the size of index's column in given
     * table, if the size of this index is not already set.
     *
     * @param table Table to search size for.
     */
    setIndexSizeFromTable(table: TableModelInterface): void;
    /**
     * Rename index column name.
     *
     * @param column Column being renamed.
     * @param newName New column name.
     */
    renameColumn(column: ColumnModelInterface, newName: string): void;
}