typeorm

import { Driver } from "../Driver"; import { SpannerQueryRunner } from "./SpannerQueryRunner"; import { ObjectLiteral } from "../../common/ObjectLiteral"; import { ColumnMetadata } from "../../metadata/ColumnMetadata"; import { Connection } from "../../connection/Connection"; import { RdbmsSchemaBuilder } from "../../schema-builder/RdbmsSchemaBuilder"; import { SpannerConnectionOptions } from "./SpannerConnectionOptions"; import { MappedColumnTypes } from "../types/MappedColumnTypes"; import { ColumnType } from "../types/ColumnTypes"; import { DataTypeDefaults } from "../types/DataTypeDefaults"; import { TableColumn } from "../../schema-builder/table/TableColumn"; import { EntityMetadata } from "../../metadata/EntityMetadata"; import { ReplicationMode } from "../types/ReplicationMode"; import { Table } from "../../schema-builder/table/Table"; import { View } from "../../schema-builder/view/View"; import { TableForeignKey } from "../../schema-builder/table/TableForeignKey"; import { CteCapabilities } from "../types/CteCapabilities"; import { UpsertType } from "../types/UpsertType"; /** * Organizes communication with Spanner DBMS. */ export declare class SpannerDriver implements Driver { /** * Connection used by driver. */ connection: Connection; /** * Cloud Spanner underlying library. */ spanner: any; /** * Cloud Spanner instance. */ instance: any; /** * Cloud Spanner database. */ instanceDatabase: any; /** * Database name. */ database?: string; /** * Connection options. */ options: SpannerConnectionOptions; /** * 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 length by a driver. */ withWidthColumnTypes: 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(connection: Connection); /** * 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. */ 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. */ escapeQueryWithParameters(sql: string, parameters: ObjectLiteral, nativeParameters: ObjectLiteral): [string, any[]]; /** * Escapes a column name. */ escape(columnName: string): string; /** * Build full table name with database name, schema name and table name. * E.g. myDB.mySchema.myTable */ buildTableName(tableName: string, schema?: string, database?: string): string; /** * Parse a target table name or other types and return a normalized table definition. */ 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. */ preparePersistentValue(value: any, columnMetadata: ColumnMetadata): any; /** * Prepares given value to a value to be persisted, based on its column type or metadata. */ prepareHydratedValue(value: any, columnMetadata: ColumnMetadata): any; /** * Creates a database type from a given column metadata. */ 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. */ normalizeDefault(columnMetadata: ColumnMetadata): string | undefined; /** * Normalizes "isUnique" value of the column. */ normalizeIsUnique(column: ColumnMetadata): boolean; /** * Returns default column lengths, which is required on column creation. */ getColumnLength(column: ColumnMetadata | TableColumn): string; /** * Creates column type definition including length, precision and scale */ 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. */ createGeneratedMap(metadata: EntityMetadata, insertResult: any, entityIndex: number): any; /** * Differentiate columns of this table and columns from the given column metadatas columns * and returns only changed. */ findChangedColumns(tableColumns: TableColumn[], columnMetadatas: ColumnMetadata[]): ColumnMetadata[]; /** * Returns true if driver supports RETURNING / OUTPUT statement. */ isReturningSqlSupported(): 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. */ 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. */ 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. */ protected normalizeDatetimeFunction(value?: string): string | undefined; /** * Escapes a given comment. */ protected escapeComment(comment?: string): string | undefined; }