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{Driver} from \"../Driver\";\nimport {ConnectionIsNotSetError} from \"../../error/ConnectionIsNotSetError\";\nimport {DriverPackageNotInstalledError} from \"../../error/DriverPackageNotInstalledError\";\nimport {DriverUtils} from \"../DriverUtils\";\nimport {SqlServerQueryRunner} from \"./SqlServerQueryRunner\";\nimport {ObjectLiteral} from \"../../common/ObjectLiteral\";\nimport {ColumnMetadata} from \"../../metadata/ColumnMetadata\";\nimport {DateUtils} from \"../../util/DateUtils\";\nimport {PlatformTools} from \"../../platform/PlatformTools\";\nimport {Connection} from \"../../connection/Connection\";\nimport {RdbmsSchemaBuilder} from \"../../schema-builder/RdbmsSchemaBuilder\";\nimport {SqlServerConnectionOptions} from \"./SqlServerConnectionOptions\";\nimport {MappedColumnTypes} from \"../types/MappedColumnTypes\";\nimport {ColumnType} from \"../types/ColumnTypes\";\nimport {DataTypeDefaults} from \"../types/DataTypeDefaults\";\nimport {MssqlParameter} from \"./MssqlParameter\";\nimport {TableColumn} from \"../../schema-builder/table/TableColumn\";\nimport {SqlServerConnectionCredentialsOptions} from \"./SqlServerConnectionCredentialsOptions\";\nimport {EntityMetadata} from \"../../metadata/EntityMetadata\";\nimport {OrmUtils} from \"../../util/OrmUtils\";\nimport {ApplyValueTransformers} from \"../../util/ApplyValueTransformers\";\n\n/**\n * Organizes communication with SQL Server DBMS.\n */\nexport class SqlServerDriver implements Driver {\n\n // -------------------------------------------------------------------------\n // Public Properties\n // -------------------------------------------------------------------------\n\n /**\n * Connection used by driver.\n */\n connection: Connection;\n\n /**\n * SQL Server library.\n */\n mssql: any;\n\n /**\n * Pool for master database.\n */\n master: any;\n\n /**\n * Pool for slave databases.\n * Used in replication.\n */\n slaves: any[] = [];\n\n // -------------------------------------------------------------------------\n // Public Implemented Properties\n // -------------------------------------------------------------------------\n\n /**\n * Connection options.\n */\n options: SqlServerConnectionOptions;\n\n /**\n * Master database used to perform all write queries.\n */\n database?: string;\n\n /**\n * Indicates if replication is enabled.\n */\n isReplicated: boolean = false;\n\n /**\n * Indicates if tree tables are supported by this driver.\n */\n treeSupport = true;\n\n /**\n * Gets list of supported column data types by a driver.\n *\n * @see https://docs.microsoft.com/en-us/sql/t-sql/data-types/data-types-transact-sql\n */\n supportedDataTypes: ColumnType[] = [\n \"int\",\n \"bigint\",\n \"bit\",\n \"decimal\",\n \"money\",\n \"numeric\",\n \"smallint\",\n \"smallmoney\",\n \"tinyint\",\n \"float\",\n \"real\",\n \"date\",\n \"datetime2\",\n \"datetime\",\n \"datetimeoffset\",\n \"smalldatetime\",\n \"time\",\n \"char\",\n \"varchar\",\n \"text\",\n \"nchar\",\n \"nvarchar\",\n \"ntext\",\n \"binary\",\n \"image\",\n \"varbinary\",\n \"hierarchyid\",\n \"sql_variant\",\n \"timestamp\",\n \"uniqueidentifier\",\n \"xml\",\n \"geometry\",\n \"geography\",\n \"rowversion\"\n ];\n\n /**\n * Gets list of spatial column data types.\n */\n spatialTypes: ColumnType[] = [\n \"geometry\",\n \"geography\"\n ];\n\n /**\n * Gets list of column data types that support length by a driver.\n */\n withLengthColumnTypes: ColumnType[] = [\n \"char\",\n \"varchar\",\n \"nchar\",\n \"nvarchar\",\n \"binary\",\n \"varbinary\"\n ];\n\n /**\n * Gets list of column data types that support precision by a driver.\n */\n withPrecisionColumnTypes: ColumnType[] = [\n \"decimal\",\n \"numeric\",\n \"time\",\n \"datetime2\",\n \"datetimeoffset\"\n ];\n\n /**\n * Gets list of column data types that support scale by a driver.\n */\n withScaleColumnTypes: ColumnType[] = [\n \"decimal\",\n \"numeric\"\n ];\n\n /**\n * Orm has special columns and we need to know what database column types should be for those types.\n * Column types are driver dependant.\n */\n mappedDataTypes: MappedColumnTypes = {\n createDate: \"datetime2\",\n createDateDefault: \"getdate()\",\n updateDate: \"datetime2\",\n updateDateDefault: \"getdate()\",\n version: \"int\",\n treeLevel: \"int\",\n migrationId: \"int\",\n migrationName: \"varchar\",\n migrationTimestamp: \"bigint\",\n cacheId: \"int\",\n cacheIdentifier: \"nvarchar\",\n cacheTime: \"bigint\",\n cacheDuration: \"int\",\n cacheQuery: \"nvarchar(MAX)\" as any,\n cacheResult: \"nvarchar(MAX)\" as any,\n metadataType: \"varchar\",\n metadataDatabase: \"varchar\",\n metadataSchema: \"varchar\",\n metadataTable: \"varchar\",\n metadataName: \"varchar\",\n metadataValue: \"nvarchar(MAX)\" as any,\n };\n\n /**\n * Default values of length, precision and scale depends on column data type.\n * Used in the cases when length/precision/scale is not specified by user.\n */\n dataTypeDefaults: DataTypeDefaults = {\n \"char\": { length: 1 },\n \"nchar\": { length: 1 },\n \"varchar\": { length: 255 },\n \"nvarchar\": { length: 255 },\n \"binary\": { length: 1 },\n \"varbinary\": { length: 1 },\n \"decimal\": { precision: 18, scale: 0 },\n \"numeric\": { precision: 18, scale: 0 },\n \"time\": { precision: 7 },\n \"datetime2\": { precision: 7 },\n \"datetimeoffset\": { precision: 7 }\n };\n\n /**\n * Max length allowed by MSSQL Server for aliases (identifiers).\n * @see https://docs.microsoft.com/en-us/sql/sql-server/maximum-capacity-specifications-for-sql-server\n */\n maxAliasLength = 128;\n\n // -------------------------------------------------------------------------\n // Constructor\n // -------------------------------------------------------------------------\n\n constructor(connection: Connection) {\n this.connection = connection;\n this.options = connection.options as SqlServerConnectionOptions;\n this.isReplicated = this.options.replication ? true : false;\n\n // load mssql package\n this.loadDependencies();\n\n // Object.assign(connection.options, DriverUtils.buildDriverOptions(connection.options)); // todo: do it better way\n // validate options to make sure everything is set\n // if (!this.options.host)\n // throw new DriverOptionNotSetError(\"host\");\n // if (!this.options.username)\n // throw new DriverOptionNotSetError(\"username\");\n // if (!this.options.database)\n // throw new DriverOptionNotSetError(\"database\");\n }\n\n // -------------------------------------------------------------------------\n // Public Implemented Methods\n // -------------------------------------------------------------------------\n\n /**\n * Performs connection to the database.\n * Based on pooling options, it can either create connection immediately,\n * either create a pool and create connection when needed.\n */\n async connect(): Promise<void> {\n\n if (this.options.replication) {\n this.slaves = await Promise.all(this.options.replication.slaves.map(slave => {\n return this.createPool(this.options, slave);\n }));\n this.master = await this.createPool(this.options, this.options.replication.master);\n this.database = this.options.replication.master.database;\n\n } else {\n this.master = await this.createPool(this.options, this.options);\n this.database = this.options.database;\n }\n }\n\n /**\n * Makes any action after connection (e.g. create extensions in Postgres driver).\n */\n afterConnect(): Promise<void> {\n return Promise.resolve();\n }\n\n /**\n * Closes connection with the database.\n */\n async disconnect(): Promise<void> {\n if (!this.master)\n return Promise.reject(new ConnectionIsNotSetError(\"mssql\"));\n\n await this.closePool(this.master);\n await Promise.all(this.slaves.map(slave => this.closePool(slave)));\n this.master = undefined;\n this.slaves = [];\n }\n\n\n /**\n * Closes connection pool.\n */\n protected async closePool(pool: any): Promise<void> {\n return new Promise<void>((ok, fail) => {\n pool.close((err: any) => err ? fail(err) : ok());\n });\n }\n\n\n /**\n * Creates a schema builder used to build and sync a schema.\n */\n createSchemaBuilder() {\n return new RdbmsSchemaBuilder(this.connection);\n }\n\n /**\n * Creates a query runner used to execute database queries.\n */\n createQueryRunner(mode: \"master\"|\"slave\" = \"master\") {\n return new SqlServerQueryRunner(this, mode);\n }\n\n /**\n * Replaces parameters in the given sql with special escaping character\n * and an array of parameter names to be passed to a query.\n */\n escapeQueryWithParameters(sql: string, parameters: ObjectLiteral, nativeParameters: ObjectLiteral): [string, any[]] {\n const escapedParameters: any[] = Object.keys(nativeParameters).map(key => nativeParameters[key]);\n if (!parameters || !Object.keys(parameters).length)\n return [sql, escapedParameters];\n\n const keys = Object.keys(parameters).map(parameter => \"(:(\\\\.\\\\.\\\\.)?\" + parameter + \"\\\\b)\").join(\"|\");\n sql = sql.replace(new RegExp(keys, \"g\"), (key: string) => {\n let value: any;\n let isArray = false;\n if (key.substr(0, 4) === \":...\") {\n isArray = true;\n value = parameters[key.substr(4)];\n } else {\n value = parameters[key.substr(1)];\n }\n\n if (isArray) {\n return value.map((v: any) => {\n escapedParameters.push(v);\n return \"@\" + (escapedParameters.length - 1);\n }).join(\", \");\n\n } else if (value instanceof Function) {\n return value();\n\n } else {\n escapedParameters.push(value);\n return \"@\" + (escapedParameters.length - 1);\n }\n }); // todo: make replace only in value statements, otherwise problems\n return [sql, escapedParameters];\n }\n\n /**\n * Escapes a column name.\n */\n escape(columnName: string): string {\n return `\"${columnName}\"`;\n }\n\n /**\n * Build full table name with database name, schema name and table name.\n * E.g. \"myDB\".\"mySchema\".\"myTable\"\n */\n buildTableName(tableName: string, schema?: string, database?: string): string {\n let fullName = tableName;\n if (schema)\n fullName = schema + \".\" + tableName;\n if (database) {\n if (!schema) {\n fullName = database + \"..\" + tableName;\n } else {\n fullName = database + \".\" + fullName;\n }\n }\n\n return fullName;\n }\n\n /**\n * Prepares given value to a value to be persisted, based on its column type and metadata.\n */\n preparePersistentValue(value: any, columnMetadata: ColumnMetadata): any {\n if (columnMetadata.transformer)\n value = ApplyValueTransformers.transformTo(columnMetadata.transformer, value);\n\n if (value === null || value === undefined)\n return value;\n\n if (columnMetadata.type === Boolean) {\n return value === true ? 1 : 0;\n\n } else if (columnMetadata.type === \"date\") {\n return DateUtils.mixedDateToDate(value);\n\n } else if (columnMetadata.type === \"time\") {\n return DateUtils.mixedTimeToDate(value);\n\n } else if (columnMetadata.type === \"datetime\"\n || columnMetadata.type === \"smalldatetime\"\n || columnMetadata.type === Date) {\n return DateUtils.mixedDateToDate(value, false, false);\n\n } else if (columnMetadata.type === \"datetime2\"\n || columnMetadata.type === \"datetimeoffset\") {\n return DateUtils.mixedDateToDate(value, false, true);\n\n } else if (columnMetadata.type === \"simple-array\") {\n return DateUtils.simpleArrayToString(value);\n\n } else if (columnMetadata.type === \"simple-json\") {\n return DateUtils.simpleJsonToString(value);\n\n } else if (columnMetadata.type === \"simple-enum\") {\n return DateUtils.simpleEnumToString(value);\n\n }\n\n return value;\n }\n\n /**\n * Prepares given value to a value to be persisted, based on its column type or metadata.\n */\n prepareHydratedValue(value: any, columnMetadata: ColumnMetadata): any {\n if (value === null || value === undefined)\n return columnMetadata.transformer ? ApplyValueTransformers.transformFrom(columnMetadata.transformer, value) : value;\n\n if (columnMetadata.type === Boolean) {\n value = value ? true : false;\n\n } else if (columnMetadata.type === \"datetime\"\n || columnMetadata.type === Date\n || columnMetadata.type === \"datetime2\"\n || columnMetadata.type === \"smalldatetime\"\n || columnMetadata.type === \"datetimeoffset\") {\n value = DateUtils.normalizeHydratedDate(value);\n\n } else if (columnMetadata.type === \"date\") {\n value = DateUtils.mixedDateToDateString(value);\n\n } else if (columnMetadata.type === \"time\") {\n value = DateUtils.mixedTimeToString(value);\n\n } else if (columnMetadata.type === \"simple-array\") {\n value = DateUtils.stringToSimpleArray(value);\n\n } else if (columnMetadata.type === \"simple-json\") {\n value = DateUtils.stringToSimpleJson(value);\n\n } else if (columnMetadata.type === \"simple-enum\") {\n value = DateUtils.stringToSimpleEnum(value, columnMetadata);\n\n }\n\n if (columnMetadata.transformer)\n value = ApplyValueTransformers.transformFrom(columnMetadata.transformer, value);\n\n return value;\n }\n\n /**\n * Creates a database type from a given column metadata.\n */\n normalizeType(column: { type?: ColumnType, length?: number | string, precision?: number|null, scale?: number }): string {\n if (column.type === Number || column.type === \"integer\") {\n return \"int\";\n\n } else if (column.type === String) {\n return \"nvarchar\";\n\n } else if (column.type === Date) {\n return \"datetime\";\n\n } else if (column.type === Boolean) {\n return \"bit\";\n\n } else if ((column.type as any) === Buffer) {\n return \"binary\";\n\n } else if (column.type === \"uuid\") {\n return \"uniqueidentifier\";\n\n } else if (column.type === \"simple-array\" || column.type === \"simple-json\") {\n return \"ntext\";\n\n } else if (column.type === \"simple-enum\") {\n return \"nvarchar\";\n\n } else if (column.type === \"dec\") {\n return \"decimal\";\n\n } else if (column.type === \"double precision\") {\n return \"float\";\n\n } else if (column.type === \"rowversion\") {\n return \"timestamp\"; // the rowversion type's name in SQL server metadata is timestamp\n\n } else {\n return column.type as string || \"\";\n }\n }\n\n /**\n * Normalizes \"default\" value of the column.\n */\n normalizeDefault(columnMetadata: ColumnMetadata): string {\n const defaultValue = columnMetadata.default;\n\n if (typeof defaultValue === \"number\") {\n return \"\" + defaultValue;\n\n } else if (typeof defaultValue === \"boolean\") {\n return defaultValue === true ? \"1\" : \"0\";\n\n } else if (typeof defaultValue === \"function\") {\n return /*\"(\" + */defaultValue()/* + \")\"*/;\n\n } else if (typeof defaultValue === \"string\") {\n return `'${defaultValue}'`;\n\n } else {\n return defaultValue;\n }\n }\n\n /**\n * Normalizes \"isUnique\" value of the column.\n */\n normalizeIsUnique(column: ColumnMetadata): boolean {\n return column.entityMetadata.uniques.some(uq => uq.columns.length === 1 && uq.columns[0] === column);\n }\n\n /**\n * Returns default column lengths, which is required on column creation.\n */\n getColumnLength(column: ColumnMetadata|TableColumn): string {\n if (column.length)\n return column.length.toString();\n\n if (column.type === \"varchar\" || column.type === \"nvarchar\" || column.type === String)\n return \"255\";\n\n return \"\";\n }\n\n /**\n * Creates column type definition including length, precision and scale\n */\n createFullType(column: TableColumn): string {\n let type = column.type;\n\n // used 'getColumnLength()' method, because SqlServer sets `varchar` and `nvarchar` length to 1 by default.\n if (this.getColumnLength(column)) {\n type += `(${this.getColumnLength(column)})`;\n\n } else if (column.precision !== null && column.precision !== undefined && column.scale !== null && column.scale !== undefined) {\n type += `(${column.precision},${column.scale})`;\n\n } else if (column.precision !== null && column.precision !== undefined) {\n type += `(${column.precision})`;\n }\n\n if (column.isArray)\n type += \" array\";\n\n return type;\n }\n\n /**\n * Obtains a new database connection to a master server.\n * Used for replication.\n * If replication is not setup then returns default connection's database connection.\n */\n obtainMasterConnection(): Promise<any> {\n return Promise.resolve(this.master);\n }\n\n /**\n * Obtains a new database connection to a slave server.\n * Used for replication.\n * If replication is not setup then returns master (default) connection's database connection.\n */\n obtainSlaveConnection(): Promise<any> {\n if (!this.slaves.length)\n return this.obtainMasterConnection();\n\n const random = Math.floor(Math.random() * this.slaves.length);\n return Promise.resolve(this.slaves[random]);\n }\n\n /**\n * Creates generated map of values generated or returned by database after INSERT query.\n */\n createGeneratedMap(metadata: EntityMetadata, insertResult: ObjectLiteral) {\n if (!insertResult)\n return undefined;\n\n return Object.keys(insertResult).reduce((map, key) => {\n const column = metadata.findColumnWithDatabaseName(key);\n if (column) {\n OrmUtils.mergeDeep(map, column.createValueMap(this.prepareHydratedValue(insertResult[key], column)));\n }\n return map;\n }, {} as ObjectLiteral);\n }\n\n /**\n * Differentiate columns of this table and columns from the given column metadatas columns\n * and returns only changed.\n */\n findChangedColumns(tableColumns: TableColumn[], columnMetadatas: ColumnMetadata[]): ColumnMetadata[] {\n return columnMetadatas.filter(columnMetadata => {\n const tableColumn = tableColumns.find(c => c.name === columnMetadata.databaseName);\n if (!tableColumn)\n return false; // we don't need new columns, we only need exist and changed\n\n return tableColumn.name !== columnMetadata.databaseName\n || tableColumn.type !== this.normalizeType(columnMetadata)\n || tableColumn.length !== columnMetadata.length\n || tableColumn.precision !== columnMetadata.precision\n || tableColumn.scale !== columnMetadata.scale\n // || tableColumn.comment !== columnMetadata.comment || // todo\n || (!tableColumn.isGenerated && this.lowerDefaultValueIfNessesary(this.normalizeDefault(columnMetadata)) !== this.lowerDefaultValueIfNessesary(tableColumn.default)) // we included check for generated here, because generated columns already can have default values\n || tableColumn.isPrimary !== columnMetadata.isPrimary\n || tableColumn.isNullable !== columnMetadata.isNullable\n || tableColumn.isUnique !== this.normalizeIsUnique(columnMetadata)\n || tableColumn.isGenerated !== columnMetadata.isGenerated;\n });\n }\n private lowerDefaultValueIfNessesary(value: string | undefined) {\n // SqlServer saves function calls in default value as lowercase #2733\n if (!value) {\n return value;\n }\n return value.split(`'`).map((v, i) => {\n return i % 2 === 1 ? v : v.toLowerCase();\n }).join(`'`);\n }\n /**\n * Returns true if driver supports RETURNING / OUTPUT statement.\n */\n isReturningSqlSupported(): boolean {\n if (this.options.options && this.options.options.disableOutputReturning) {\n return false;\n }\n return true;\n }\n\n /**\n * Returns true if driver supports uuid values generation on its own.\n */\n isUUIDGenerationSupported(): boolean {\n return true;\n }\n\n /**\n * Creates an escaped parameter.\n */\n createParameter(parameterName: string, index: number): string {\n return \"@\" + index;\n }\n\n // -------------------------------------------------------------------------\n // Public Methods\n // -------------------------------------------------------------------------\n\n /**\n * Sql server's parameters needs to be wrapped into special object with type information about this value.\n * This method wraps given value into MssqlParameter based on its column definition.\n */\n parametrizeValue(column: ColumnMetadata, value: any) {\n\n // if its already MssqlParameter then simply return it\n if (value instanceof MssqlParameter)\n return value;\n\n const normalizedType = this.normalizeType({ type: column.type });\n if (column.length) {\n return new MssqlParameter(value, normalizedType as any, column.length as any);\n\n } else if (column.precision !== null && column.precision !== undefined && column.scale !== null && column.scale !== undefined) {\n return new MssqlParameter(value, normalizedType as any, column.precision, column.scale);\n\n } else if (column.precision !== null && column.precision !== undefined) {\n return new MssqlParameter(value, normalizedType as any, column.precision);\n\n } else if (column.scale !== null && column.scale !== undefined) {\n return new MssqlParameter(value, normalizedType as any, column.scale);\n }\n\n return new MssqlParameter(value, normalizedType as any);\n }\n\n /**\n * Sql server's parameters needs to be wrapped into special object with type information about this value.\n * This method wraps all values of the given object into MssqlParameter based on their column definitions in the given table.\n */\n parametrizeMap(tablePath: string, map: ObjectLiteral): ObjectLiteral {\n\n // find metadata for the given table\n if (!this.connection.hasMetadata(tablePath)) // if no metadata found then we can't proceed because we don't have columns and their types\n return map;\n const metadata = this.connection.getMetadata(tablePath);\n\n return Object.keys(map).reduce((newMap, key) => {\n const value = map[key];\n\n // find column metadata\n const column = metadata.findColumnWithDatabaseName(key);\n if (!column) // if we didn't find a column then we can't proceed because we don't have a column type\n return value;\n\n newMap[key] = this.parametrizeValue(column, value);\n return newMap;\n }, {} as ObjectLiteral);\n }\n\n // -------------------------------------------------------------------------\n // Protected Methods\n // -------------------------------------------------------------------------\n\n /**\n * If driver dependency is not given explicitly, then try to load it via \"require\".\n */\n protected loadDependencies(): void {\n try {\n this.mssql = PlatformTools.load(\"mssql\");\n\n } catch (e) { // todo: better error for browser env\n throw new DriverPackageNotInstalledError(\"SQL Server\", \"mssql\");\n }\n }\n\n /**\n * Creates a new connection pool for a given database credentials.\n */\n protected createPool(options: SqlServerConnectionOptions, credentials: SqlServerConnectionCredentialsOptions): Promise<any> {\n\n credentials = Object.assign(credentials, DriverUtils.buildDriverOptions(credentials)); // todo: do it better way\n\n // build connection options for the driver\n const connectionOptions = Object.assign({}, {\n connectionTimeout: this.options.connectionTimeout,\n requestTimeout: this.options.requestTimeout,\n stream: this.options.stream,\n pool: this.options.pool,\n options: this.options.options,\n }, {\n server: credentials.host,\n user: credentials.username,\n password: credentials.password,\n database: credentials.database,\n port: credentials.port,\n domain: credentials.domain,\n }, options.extra || {});\n\n // set default useUTC option if it hasn't been set\n if (!connectionOptions.options) connectionOptions.options = { useUTC: false };\n else if (!connectionOptions.options.useUTC) connectionOptions.options.useUTC = false;\n\n // pooling is enabled either when its set explicitly to true,\n // either when its not defined at all (e.g. enabled by default)\n return new Promise<void>((ok, fail) => {\n const pool = new this.mssql.ConnectionPool(connectionOptions);\n\n const { logger } = this.connection;\n /*\n Attaching an error handler to pool errors is essential, as, otherwise, errors raised will go unhandled and\n cause the hosting app to crash.\n */\n pool.on(\"error\", (error: any) => logger.log(\"warn\", `MSSQL pool raised an error. ${error}`));\n\n const connection = pool.connect((err: any) => {\n if (err) return fail(err);\n ok(connection);\n });\n });\n }\n\n}\n"],"sourceRoot":"../.."}
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