import { QueryRunner } from "../../query-runner/QueryRunner";
import { ObjectLiteral } from "../../common/ObjectLiteral";
import { ColumnSchema } from "../../schema-builder/schema/ColumnSchema";
import { ColumnMetadata } from "../../metadata/ColumnMetadata";
import { TableSchema } from "../../schema-builder/schema/TableSchema";
import { ForeignKeySchema } from "../../schema-builder/schema/ForeignKeySchema";
import { IndexSchema } from "../../schema-builder/schema/IndexSchema";
import { WebsqlDriver } from "./WebsqlDriver";
/**
 * Runs queries on a single websql database connection.
 */
export declare class WebsqlQueryRunner implements QueryRunner {
    protected driver: WebsqlDriver;
    /**
     * Indicates if connection for this query runner is released.
     * Once its released, query runner cannot run queries anymore.
     */
    isReleased: boolean;
    /**
     * Indicates if transaction is in progress.
     */
    isTransactionActive: boolean;
    /**
     * Real database connection from a connection pool used to perform queries.
     */
    protected databaseConnection: any;
    /**
     * Promise used to obtain a database connection for a first time.
     */
    protected databaseConnectionPromise: Promise<any>;
    constructor(driver: WebsqlDriver);
    /**
     * Creates/uses database connection from the connection pool to perform further operations.
     * Returns obtained database connection.
     */
    connect(): Promise<any>;
    /**
     * Releases used database connection.
     * You cannot use query runner methods once its released.
     */
    release(): Promise<void>;
    /**
     * Removes all tables from the currently connected database.
     */
    clearDatabase(): Promise<void>;
    /**
     * Starts transaction.
     */
    startTransaction(): Promise<void>;
    /**
     * Commits transaction.
     * Error will be thrown if transaction was not started.
     */
    commitTransaction(): Promise<void>;
    /**
     * Rollbacks transaction.
     * Error will be thrown if transaction was not started.
     */
    rollbackTransaction(): Promise<void>;
    /**
     * Executes a given SQL query.
     */
    query(query: string, parameters?: any[]): Promise<any>;
    /**
     * Insert a new row with given values into the given table.
     * Returns value of the generated column if given and generate column exist in the table.
     */
    insert(tableName: string, keyValues: ObjectLiteral, generatedColumn?: ColumnMetadata): Promise<any>;
    /**
     * Updates rows that match given conditions in the given table.
     */
    update(tableName: string, valuesMap: ObjectLiteral, conditions: ObjectLiteral): Promise<void>;
    /**
     * Deletes from the given table by a given conditions.
     */
    delete(tableName: string, condition: string, parameters?: any[]): Promise<void>;
    /**
     * Deletes from the given table by a given conditions.
     */
    delete(tableName: string, conditions: ObjectLiteral): Promise<void>;
    /**
     * Inserts rows into closure table.
     */
    insertIntoClosureTable(tableName: string, newEntityId: any, parentId: any, hasLevel: boolean): Promise<number>;
    /**
     * Loads given table's data from the database.
     */
    loadTableSchema(tableName: string): Promise<TableSchema | undefined>;
    /**
     * Loads all tables (with given names) from the database and creates a TableSchema from them.
     */
    loadTableSchemas(tableNames: string[]): Promise<TableSchema[]>;
    /**
     * Checks if table with the given name exist in the database.
     */
    hasTable(tableName: string): Promise<boolean>;
    /**
     * Creates a new table from the given table metadata and column metadatas.
     */
    createTable(table: TableSchema): Promise<void>;
    /**
     * Drops the table.
     */
    dropTable(tableName: string): Promise<void>;
    /**
     * Checks if column with the given name exist in the given table.
     */
    hasColumn(tableName: string, columnName: string): Promise<boolean>;
    /**
     * Creates a new column from the column schema in the table.
     */
    addColumn(tableName: string, column: ColumnSchema): Promise<void>;
    /**
     * Creates a new column from the column schema in the table.
     */
    addColumn(tableSchema: TableSchema, column: ColumnSchema): Promise<void>;
    /**
     * Creates a new columns from the column schema in the table.
     */
    addColumns(tableName: string, columns: ColumnSchema[]): Promise<void>;
    /**
     * Creates a new columns from the column schema in the table.
     */
    addColumns(tableSchema: TableSchema, columns: ColumnSchema[]): Promise<void>;
    /**
     * Renames column in the given table.
     */
    renameColumn(table: TableSchema, oldColumn: ColumnSchema, newColumn: ColumnSchema): Promise<void>;
    /**
     * Renames column in the given table.
     */
    renameColumn(tableName: string, oldColumnName: string, newColumnName: string): Promise<void>;
    /**
     * Changes a column in the table.
     */
    changeColumn(tableSchema: TableSchema, oldColumn: ColumnSchema, newColumn: ColumnSchema): Promise<void>;
    /**
     * Changes a column in the table.
     */
    changeColumn(tableSchema: string, oldColumn: string, newColumn: ColumnSchema): Promise<void>;
    /**
     * Changes a column in the table.
     * Changed column looses all its keys in the db.
     */
    changeColumns(tableSchema: TableSchema, changedColumns: {
        newColumn: ColumnSchema;
        oldColumn: ColumnSchema;
    }[]): Promise<void>;
    /**
     * Drops column in the table.
     */
    dropColumn(table: TableSchema, column: ColumnSchema): Promise<void>;
    /**
     * Drops the columns in the table.
     */
    dropColumns(table: TableSchema, columns: ColumnSchema[]): Promise<void>;
    /**
     * Updates table's primary keys.
     */
    updatePrimaryKeys(dbTable: TableSchema): Promise<void>;
    /**
     * Creates a new foreign key.
     */
    createForeignKey(tableName: string, foreignKey: ForeignKeySchema): Promise<void>;
    /**
     * Creates a new foreign key.
     */
    createForeignKey(tableSchema: TableSchema, foreignKey: ForeignKeySchema): Promise<void>;
    /**
     * Creates a new foreign keys.
     */
    createForeignKeys(tableName: string, foreignKeys: ForeignKeySchema[]): Promise<void>;
    /**
     * Creates a new foreign keys.
     */
    createForeignKeys(tableSchema: TableSchema, foreignKeys: ForeignKeySchema[]): Promise<void>;
    /**
     * Drops a foreign key from the table.
     */
    dropForeignKey(tableName: string, foreignKey: ForeignKeySchema): Promise<void>;
    /**
     * Drops a foreign key from the table.
     */
    dropForeignKey(tableSchema: TableSchema, foreignKey: ForeignKeySchema): Promise<void>;
    /**
     * Drops a foreign keys from the table.
     */
    dropForeignKeys(tableName: string, foreignKeys: ForeignKeySchema[]): Promise<void>;
    /**
     * Drops a foreign keys from the table.
     */
    dropForeignKeys(tableSchema: TableSchema, foreignKeys: ForeignKeySchema[]): Promise<void>;
    /**
     * Creates a new index.
     */
    createIndex(tableName: string, index: IndexSchema): Promise<void>;
    /**
     * Drops an index from the table.
     */
    dropIndex(tableName: string, indexName: string): Promise<void>;
    /**
     * Truncates table.
     */
    truncate(tableName: string): Promise<void>;
    /**
     * Parametrizes given object of values. Used to create column=value queries.
     */
    protected parametrize(objectLiteral: ObjectLiteral, startIndex?: number): string[];
    /**
     * Builds a query for create column.
     */
    protected buildCreateColumnSql(column: ColumnSchema): string;
    protected recreateTable(tableSchema: TableSchema, oldTableSchema?: TableSchema): Promise<void>;
    /**
     * If given value is a table name then it loads its table schema representation from the database.
     */
    protected getTableSchema(tableSchemaOrName: TableSchema | string): Promise<TableSchema>;
}
