typeorm

import type { ObjectLiteral } from "../../common/ObjectLiteral"; import type { DataSource } from "../../data-source"; import type { ColumnMetadata } from "../../metadata/ColumnMetadata"; import { EntityMetadata } from "../../metadata/EntityMetadata"; import { RdbmsSchemaBuilder } from "../../schema-builder/RdbmsSchemaBuilder"; import { Table } from "../../schema-builder/table/Table"; import type { TableColumn } from "../../schema-builder/table/TableColumn"; import { TableForeignKey } from "../../schema-builder/table/TableForeignKey"; import { View } from "../../schema-builder/view/View"; import type { Driver } from "../Driver"; import type { ColumnType } from "../types/ColumnTypes"; import type { CteCapabilities } from "../types/CteCapabilities"; import type { DataTypeDefaults } from "../types/DataTypeDefaults"; import type { MappedColumnTypes } from "../types/MappedColumnTypes"; import type { ReplicationMode } from "../types/ReplicationMode"; import type { ReturningType } from "../types/ReturningType"; import type { IsolationLevel } from "../types/IsolationLevel"; import type { UpsertType } from "../types/UpsertType"; import type { SpannerDataSourceOptions } from "./SpannerDataSourceOptions"; import { SpannerQueryRunner } from "./SpannerQueryRunner"; /** * Organizes communication with Spanner DBMS. */ export declare class SpannerDriver implements Driver { /** * Transaction isolation levels supported by this driver. * * @see https://cloud.google.com/spanner/docs/isolation-levels */ static readonly supportedIsolationLevels: IsolationLevel[]; /** * DataSource used by the driver. */ dataSource: DataSource; /** * Isolation levels supported by this driver. */ supportedIsolationLevels: ("READ COMMITTED" | "READ UNCOMMITTED" | "REPEATABLE READ" | "SERIALIZABLE" | "SNAPSHOT")[]; /** * DataSource used by the driver. * * @deprecated since 1.0.0. Use {@link dataSource} instance instead. */ get connection(): DataSource; /** * Cloud Spanner underlying library. */ spanner: any; /** * Cloud Spanner instance. */ instance: any; /** * Cloud Spanner database. */ instanceDatabase: any; /** * Database name. */ database?: string; /** * DataSource options. */ options: SpannerDataSourceOptions; /** * Indicates if replication is enabled. */ isReplicated: boolean; /** * Indicates if tree tables are supported by this driver. */ treeSupport: boolean; /** * Represent transaction support by this driver */ transactionSupport: "none"; /** * Gets list of supported column data types by a driver. * * @see https://cloud.google.com/spanner/docs/reference/standard-sql/data-types */ supportedDataTypes: ColumnType[]; /** * Returns type of upsert supported by driver if any */ supportedUpsertTypes: UpsertType[]; /** * Gets list of spatial column data types. */ spatialTypes: ColumnType[]; /** * Gets list of column data types that support length by a driver. */ withLengthColumnTypes: ColumnType[]; /** * Gets list of column data types that support precision by a driver. */ withPrecisionColumnTypes: ColumnType[]; /** * Gets list of column data types that supports scale by a driver. */ withScaleColumnTypes: ColumnType[]; /** * ORM has special columns and we need to know what database column types should be for those columns. * Column types are driver dependant. */ mappedDataTypes: MappedColumnTypes; /** * The prefix used for the parameters */ parametersPrefix: string; /** * Default values of length, precision and scale depends on column data type. * Used in the cases when length/precision/scale is not specified by user. */ dataTypeDefaults: DataTypeDefaults; /** * Max length allowed by MySQL for aliases. * * @see https://dev.mysql.com/doc/refman/5.5/en/identifiers.html */ maxAliasLength: number; cteCapabilities: CteCapabilities; constructor(dataSource: DataSource); /** * Performs connection to the database. */ connect(): Promise<void>; /** * Makes any action after connection (e.g. create extensions in Postgres driver). */ afterConnect(): Promise<void>; /** * Closes connection with the database. */ disconnect(): Promise<void>; /** * Creates a schema builder used to build and sync a schema. */ createSchemaBuilder(): RdbmsSchemaBuilder; /** * Creates a query runner used to execute database queries. * * @param mode */ createQueryRunner(mode: ReplicationMode): SpannerQueryRunner; /** * Replaces parameters in the given sql with special escaping character * and an array of parameter names to be passed to a query. * * @param sql * @param parameters */ escapeQueryWithParameters(sql: string, parameters: ObjectLiteral): [string, any[]]; /** * Escapes a column name. * * @param columnName */ escape(columnName: string): string; /** * Build full table name with database name, schema name and table name. * E.g. myDB.mySchema.myTable * * @param tableName * @param schema * @param database */ buildTableName(tableName: string, schema?: string, database?: string): string; /** * Parse a target table name or other types and return a normalized table definition. * * @param target */ parseTableName(target: EntityMetadata | Table | View | TableForeignKey | string): { database?: string; schema?: string; tableName: string; }; /** * Prepares given value to a value to be persisted, based on its column type and metadata. * * @param value * @param columnMetadata */ preparePersistentValue(value: any, columnMetadata: ColumnMetadata): any; /** * Prepares given value to a value to be persisted, based on its column type or metadata. * * @param value * @param columnMetadata */ prepareHydratedValue(value: any, columnMetadata: ColumnMetadata): any; /** * Creates a database type from a given column metadata. * * @param column * @param column.type * @param column.length * @param column.precision * @param column.scale */ normalizeType(column: { type: ColumnType; length?: number | string; precision?: number | null; scale?: number; }): string; /** * Normalizes "default" value of the column. * * Spanner does not support default values. * * @param columnMetadata */ normalizeDefault(columnMetadata: ColumnMetadata): string | undefined; /** * Normalizes "isUnique" value of the column. * * @param column */ normalizeIsUnique(column: ColumnMetadata): boolean; /** * Returns default column lengths, which is required on column creation. * * @param column */ getColumnLength(column: ColumnMetadata | TableColumn): string; /** * Creates column type definition including length, precision and scale * * @param column */ createFullType(column: TableColumn): string; /** * Obtains a new database connection to a master server. * Used for replication. * If replication is not setup then returns default connection's database connection. */ obtainMasterConnection(): Promise<any>; /** * Obtains a new database connection to a slave server. * Used for replication. * If replication is not setup then returns master (default) connection's database connection. */ obtainSlaveConnection(): Promise<any>; /** * Creates generated map of values generated or returned by database after INSERT query. * * @param metadata * @param insertResult * @param entityIndex */ createGeneratedMap(metadata: EntityMetadata, insertResult: any, entityIndex: number): ObjectLiteral | undefined; /** * Differentiate columns of this table and columns from the given column metadatas columns * and returns only changed. * * @param tableColumns * @param columnMetadatas */ findChangedColumns(tableColumns: TableColumn[], columnMetadatas: ColumnMetadata[]): ColumnMetadata[]; /** * Returns true if driver supports RETURNING / OUTPUT statement. * * @param _returningType */ isReturningSqlSupported(_returningType: ReturningType): boolean; /** * Returns true if driver supports uuid values generation on its own. */ isUUIDGenerationSupported(): boolean; /** * Returns true if driver supports fulltext indices. */ isFullTextColumnTypeSupported(): boolean; /** * Creates an escaped parameter. * * @param parameterName * @param index */ createParameter(parameterName: string, index: number): string; /** * Loads all driver dependencies. */ protected loadDependencies(): void; compareNullableValues(columnMetadata: ColumnMetadata, tableColumn: TableColumn): boolean; /** * Checks if "DEFAULT" values in the column metadata and in the database are equal. * * @param columnMetadataValue * @param databaseValue */ protected compareDefaultValues(columnMetadataValue: string | undefined, databaseValue: string | undefined): boolean; /** * If parameter is a datetime function, e.g. "CURRENT_TIMESTAMP", normalizes it. * Otherwise returns original input. * * @param value */ protected normalizeDatetimeFunction(value?: string): string | undefined; /** * Escapes a given comment. * * @param comment */ protected escapeComment(comment?: string): string | undefined; }