{"version":3,"file":"bulk-load.js","names":["_events","require","_writableTrackingBuffer","_interopRequireDefault","_stream","_token","e","__esModule","default","FLAGS","nullable","caseSen","updateableReadWrite","updateableUnknown","identity","computed","fixedLenCLRType","sparseColumnSet","hidden","key","nullableUnknown","DONE_STATUS","FINAL","MORE","ERROR","INXACT","COUNT","ATTN","SRVERROR","rowTokenBuffer","Buffer","from","TOKEN_TYPE","ROW","textPointerAndTimestampBuffer","textPointerNullBuffer","RowTransform","Transform","constructor","bulkLoad","writableObjectMode","mainOptions","options","columns","columnMetadataWritten","_transform","row","_encoding","callback","push","getColMetaData","i","length","c","value","Array","isArray","objName","firstRowWritten","type","validate","collation","error","parameter","scale","precision","name","generateParameterLength","chunk","generateParameterData","process","nextTick","_flush","createDoneToken","BulkLoad","EventEmitter","table","connectionOptions","checkConstraints","fireTriggers","keepNulls","lockTable","order","TypeError","column","direction","Object","entries","undefined","canceled","executionStarted","columnsByName","streamingMode","rowToPacketTransform","bulkOptions","addColumn","output","Error","id","resolveLength","resolvePrecision","resolveScale","getOptionsSql","addOptions","orderColumns","join","getBulkInsertSql","sql","len","declaration","getTableCreationSql","tBuf","WritableTrackingBuffer","writeUInt8","COLMETADATA","writeUInt16LE","j","tdsVersion","writeUInt32LE","flags","writeBuffer","generateTypeInfo","hasTableName","writeUsVarchar","writeBVarchar","data","setTimeout","timeout","DONE","status","cancel","emit","_default","exports","module"],"sources":["../src/bulk-load.ts"],"sourcesContent":["import { EventEmitter } from 'events';\nimport WritableTrackingBuffer from './tracking-buffer/writable-tracking-buffer';\nimport Connection, { type InternalConnectionOptions } from './connection';\n\nimport { Transform } from 'stream';\nimport { TYPE as TOKEN_TYPE } from './token/token';\n\nimport { type DataType, type Parameter } from './data-type';\nimport { Collation } from './collation';\n\n/**\n * @private\n */\nconst FLAGS = {\n nullable: 1 << 0,\n caseSen: 1 << 1,\n updateableReadWrite: 1 << 2,\n updateableUnknown: 1 << 3,\n identity: 1 << 4,\n computed: 1 << 5, // introduced in TDS 7.2\n fixedLenCLRType: 1 << 8, // introduced in TDS 7.2\n sparseColumnSet: 1 << 10, // introduced in TDS 7.3.B\n hidden: 1 << 13, // introduced in TDS 7.2\n key: 1 << 14, // introduced in TDS 7.2\n nullableUnknown: 1 << 15 // introduced in TDS 7.2\n};\n\n/**\n * @private\n */\nconst DONE_STATUS = {\n FINAL: 0x00,\n MORE: 0x1,\n ERROR: 0x2,\n INXACT: 0x4,\n COUNT: 0x10,\n ATTN: 0x20,\n SRVERROR: 0x100\n};\n\n/**\n * @private\n */\ninterface InternalOptions {\n checkConstraints: boolean;\n fireTriggers: boolean;\n keepNulls: boolean;\n lockTable: boolean;\n order: { [columnName: string]: 'ASC' | 'DESC' };\n}\n\nexport interface Options {\n /**\n * Honors constraints during bulk load, using T-SQL\n * [CHECK_CONSTRAINTS](https://technet.microsoft.com/en-us/library/ms186247(v=sql.105).aspx).\n * (default: `false`)\n */\n checkConstraints?: InternalOptions['checkConstraints'] | undefined;\n\n /**\n * Honors insert triggers during bulk load, using the T-SQL [FIRE_TRIGGERS](https://technet.microsoft.com/en-us/library/ms187640(v=sql.105).aspx). (default: `false`)\n */\n fireTriggers?: InternalOptions['fireTriggers'] | undefined;\n\n /**\n * Honors null value passed, ignores the default values set on table, using T-SQL [KEEP_NULLS](https://msdn.microsoft.com/en-us/library/ms187887(v=sql.120).aspx). (default: `false`)\n */\n keepNulls?: InternalOptions['keepNulls'] | undefined;\n\n /**\n * Places a bulk update(BU) lock on table while performing bulk load, using T-SQL [TABLOCK](https://technet.microsoft.com/en-us/library/ms180876(v=sql.105).aspx). (default: `false`)\n */\n lockTable?: InternalOptions['lockTable'] | undefined;\n\n /**\n * Specifies the ordering of the data to possibly increase bulk insert performance, using T-SQL [ORDER](https://docs.microsoft.com/en-us/previous-versions/sql/sql-server-2008-r2/ms177468(v=sql.105)). (default: `{}`)\n */\n order?: InternalOptions['order'] | undefined;\n}\n\n\nexport type Callback =\n /**\n * A function which will be called after the [[BulkLoad]] finishes executing.\n *\n * @param rowCount the number of rows inserted\n */\n (err: Error | undefined | null, rowCount?: number) => void;\n\ninterface Column extends Parameter {\n objName: string;\n collation: Collation | undefined;\n}\n\ninterface ColumnOptions {\n output?: boolean;\n\n /**\n * For VarChar, NVarChar, VarBinary. Use length as `Infinity` for VarChar(max), NVarChar(max) and VarBinary(max).\n */\n length?: number;\n\n /**\n * For Numeric, Decimal.\n */\n precision?: number;\n\n /**\n * For Numeric, Decimal, Time, DateTime2, DateTimeOffset.\n */\n scale?: number;\n\n /**\n * If the name of the column is different from the name of the property found on `rowObj` arguments passed to [[addRow]], then you can use this option to specify the property name.\n */\n objName?: string;\n\n /**\n * Indicates whether the column accepts NULL values.\n */\n nullable?: boolean;\n}\n\nconst rowTokenBuffer = Buffer.from([ TOKEN_TYPE.ROW ]);\nconst textPointerAndTimestampBuffer = Buffer.from([\n // TextPointer length\n 0x10,\n\n // TextPointer\n 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\n\n // Timestamp\n 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00\n]);\nconst textPointerNullBuffer = Buffer.from([0x00]);\n\n// A transform that converts rows to packets.\nclass RowTransform extends Transform {\n /**\n * @private\n */\n declare columnMetadataWritten: boolean;\n /**\n * @private\n */\n declare bulkLoad: BulkLoad;\n /**\n * @private\n */\n declare mainOptions: BulkLoad['options'];\n /**\n * @private\n */\n declare columns: BulkLoad['columns'];\n\n /**\n * @private\n */\n constructor(bulkLoad: BulkLoad) {\n super({ writableObjectMode: true });\n\n this.bulkLoad = bulkLoad;\n this.mainOptions = bulkLoad.options;\n this.columns = bulkLoad.columns;\n\n this.columnMetadataWritten = false;\n }\n\n /**\n * @private\n */\n _transform(row: Array<unknown> | { [colName: string]: unknown }, _encoding: string, callback: (error?: Error) => void) {\n if (!this.columnMetadataWritten) {\n this.push(this.bulkLoad.getColMetaData());\n this.columnMetadataWritten = true;\n }\n\n this.push(rowTokenBuffer);\n\n for (let i = 0; i < this.columns.length; i++) {\n const c = this.columns[i];\n let value = Array.isArray(row) ? row[i] : row[c.objName];\n\n if (!this.bulkLoad.firstRowWritten) {\n try {\n value = c.type.validate(value, c.collation);\n } catch (error: any) {\n return callback(error);\n }\n }\n\n const parameter = {\n length: c.length,\n scale: c.scale,\n precision: c.precision,\n value: value\n };\n\n if (c.type.name === 'Text' || c.type.name === 'Image' || c.type.name === 'NText') {\n if (value == null) {\n this.push(textPointerNullBuffer);\n continue;\n }\n\n this.push(textPointerAndTimestampBuffer);\n }\n\n try {\n this.push(c.type.generateParameterLength(parameter, this.mainOptions));\n for (const chunk of c.type.generateParameterData(parameter, this.mainOptions)) {\n this.push(chunk);\n }\n } catch (error: any) {\n return callback(error);\n }\n }\n\n process.nextTick(callback);\n }\n\n /**\n * @private\n */\n _flush(callback: () => void) {\n this.push(this.bulkLoad.createDoneToken());\n\n process.nextTick(callback);\n }\n}\n\n/**\n * A BulkLoad instance is used to perform a bulk insert.\n *\n * Use [[Connection.newBulkLoad]] to create a new instance, and [[Connection.execBulkLoad]] to execute it.\n *\n * Example of BulkLoad Usages:\n *\n * ```js\n * // optional BulkLoad options\n * const options = { keepNulls: true };\n *\n * // instantiate - provide the table where you'll be inserting to, options and a callback\n * const bulkLoad = connection.newBulkLoad('MyTable', options, (error, rowCount) => {\n * console.log('inserted %d rows', rowCount);\n * });\n *\n * // setup your columns - always indicate whether the column is nullable\n * bulkLoad.addColumn('myInt', TYPES.Int, { nullable: false });\n * bulkLoad.addColumn('myString', TYPES.NVarChar, { length: 50, nullable: true });\n *\n * // execute\n * connection.execBulkLoad(bulkLoad, [\n * { myInt: 7, myString: 'hello' },\n * { myInt: 23, myString: 'world' }\n * ]);\n * ```\n */\nclass BulkLoad extends EventEmitter {\n /**\n * @private\n */\n declare error: Error | undefined;\n /**\n * @private\n */\n declare canceled: boolean;\n /**\n * @private\n */\n declare executionStarted: boolean;\n /**\n * @private\n */\n declare streamingMode: boolean;\n /**\n * @private\n */\n declare table: string;\n /**\n * @private\n */\n declare timeout: number | undefined;\n\n /**\n * @private\n */\n declare options: InternalConnectionOptions;\n /**\n * @private\n */\n declare callback: Callback;\n\n /**\n * @private\n */\n declare columns: Array<Column>;\n /**\n * @private\n */\n declare columnsByName: { [name: string]: Column };\n\n /**\n * @private\n */\n declare firstRowWritten: boolean;\n /**\n * @private\n */\n declare rowToPacketTransform: RowTransform;\n\n /**\n * @private\n */\n declare bulkOptions: InternalOptions;\n\n /**\n * @private\n */\n declare connection: Connection | undefined;\n /**\n * @private\n */\n declare rows: Array<any> | undefined;\n /**\n * @private\n */\n declare rst: Array<any> | undefined;\n /**\n * @private\n */\n declare rowCount: number | undefined;\n\n declare collation: Collation | undefined;\n\n /**\n * @private\n */\n constructor(table: string, collation: Collation | undefined, connectionOptions: InternalConnectionOptions, {\n checkConstraints = false,\n fireTriggers = false,\n keepNulls = false,\n lockTable = false,\n order = {},\n }: Options, callback: Callback) {\n if (typeof checkConstraints !== 'boolean') {\n throw new TypeError('The \"options.checkConstraints\" property must be of type boolean.');\n }\n\n if (typeof fireTriggers !== 'boolean') {\n throw new TypeError('The \"options.fireTriggers\" property must be of type boolean.');\n }\n\n if (typeof keepNulls !== 'boolean') {\n throw new TypeError('The \"options.keepNulls\" property must be of type boolean.');\n }\n\n if (typeof lockTable !== 'boolean') {\n throw new TypeError('The \"options.lockTable\" property must be of type boolean.');\n }\n\n if (typeof order !== 'object' || order === null) {\n throw new TypeError('The \"options.order\" property must be of type object.');\n }\n\n for (const [column, direction] of Object.entries(order)) {\n if (direction !== 'ASC' && direction !== 'DESC') {\n throw new TypeError('The value of the \"' + column + '\" key in the \"options.order\" object must be either \"ASC\" or \"DESC\".');\n }\n }\n\n super();\n\n this.error = undefined;\n this.canceled = false;\n this.executionStarted = false;\n\n this.collation = collation;\n\n this.table = table;\n this.options = connectionOptions;\n this.callback = callback;\n this.columns = [];\n this.columnsByName = {};\n this.firstRowWritten = false;\n this.streamingMode = false;\n\n this.rowToPacketTransform = new RowTransform(this);\n\n this.bulkOptions = { checkConstraints, fireTriggers, keepNulls, lockTable, order };\n }\n\n /**\n * Adds a column to the bulk load.\n *\n * The column definitions should match the table you are trying to insert into.\n * Attempting to call addColumn after the first row has been added will throw an exception.\n *\n * ```js\n * bulkLoad.addColumn('MyIntColumn', TYPES.Int, { nullable: false });\n * ```\n *\n * @param name The name of the column.\n * @param type One of the supported `data types`.\n * @param __namedParameters Additional column type information. At a minimum, `nullable` must be set to true or false.\n * @param length For VarChar, NVarChar, VarBinary. Use length as `Infinity` for VarChar(max), NVarChar(max) and VarBinary(max).\n * @param nullable Indicates whether the column accepts NULL values.\n * @param objName If the name of the column is different from the name of the property found on `rowObj` arguments passed to [[addRow]] or [[Connection.execBulkLoad]], then you can use this option to specify the property name.\n * @param precision For Numeric, Decimal.\n * @param scale For Numeric, Decimal, Time, DateTime2, DateTimeOffset.\n */\n addColumn(name: string, type: DataType, { output = false, length, precision, scale, objName = name, nullable = true }: ColumnOptions) {\n if (this.firstRowWritten) {\n throw new Error('Columns cannot be added to bulk insert after the first row has been written.');\n }\n if (this.executionStarted) {\n throw new Error('Columns cannot be added to bulk insert after execution has started.');\n }\n\n const column: Column = {\n type: type,\n name: name,\n value: null,\n output: output,\n length: length,\n precision: precision,\n scale: scale,\n objName: objName,\n nullable: nullable,\n collation: this.collation\n };\n\n if ((type.id & 0x30) === 0x20) {\n if (column.length == null && type.resolveLength) {\n column.length = type.resolveLength(column);\n }\n }\n\n if (type.resolvePrecision && column.precision == null) {\n column.precision = type.resolvePrecision(column);\n }\n\n if (type.resolveScale && column.scale == null) {\n column.scale = type.resolveScale(column);\n }\n\n this.columns.push(column);\n\n this.columnsByName[name] = column;\n }\n\n /**\n * @private\n */\n getOptionsSql() {\n const addOptions = [];\n\n if (this.bulkOptions.checkConstraints) {\n addOptions.push('CHECK_CONSTRAINTS');\n }\n\n if (this.bulkOptions.fireTriggers) {\n addOptions.push('FIRE_TRIGGERS');\n }\n\n if (this.bulkOptions.keepNulls) {\n addOptions.push('KEEP_NULLS');\n }\n\n if (this.bulkOptions.lockTable) {\n addOptions.push('TABLOCK');\n }\n\n if (this.bulkOptions.order) {\n const orderColumns = [];\n\n for (const [column, direction] of Object.entries(this.bulkOptions.order)) {\n orderColumns.push(`${column} ${direction}`);\n }\n\n if (orderColumns.length) {\n addOptions.push(`ORDER (${orderColumns.join(', ')})`);\n }\n }\n\n if (addOptions.length > 0) {\n return ` WITH (${addOptions.join(',')})`;\n } else {\n return '';\n }\n }\n\n /**\n * @private\n */\n getBulkInsertSql() {\n let sql = 'insert bulk ' + this.table + '(';\n for (let i = 0, len = this.columns.length; i < len; i++) {\n const c = this.columns[i];\n if (i !== 0) {\n sql += ', ';\n }\n sql += '[' + c.name + '] ' + (c.type.declaration(c));\n }\n sql += ')';\n\n sql += this.getOptionsSql();\n return sql;\n }\n\n /**\n * This is simply a helper utility function which returns a `CREATE TABLE SQL` statement based on the columns added to the bulkLoad object.\n * This may be particularly handy when you want to insert into a temporary table (a table which starts with `#`).\n *\n * ```js\n * var sql = bulkLoad.getTableCreationSql();\n * ```\n *\n * A side note on bulk inserting into temporary tables: if you want to access a local temporary table after executing the bulk load,\n * you'll need to use the same connection and execute your requests using [[Connection.execSqlBatch]] instead of [[Connection.execSql]]\n */\n getTableCreationSql() {\n let sql = 'CREATE TABLE ' + this.table + '(\\n';\n for (let i = 0, len = this.columns.length; i < len; i++) {\n const c = this.columns[i];\n if (i !== 0) {\n sql += ',\\n';\n }\n sql += '[' + c.name + '] ' + (c.type.declaration(c));\n if (c.nullable !== undefined) {\n sql += ' ' + (c.nullable ? 'NULL' : 'NOT NULL');\n }\n }\n sql += '\\n)';\n return sql;\n }\n\n /**\n * @private\n */\n getColMetaData() {\n const tBuf = new WritableTrackingBuffer(100, null, true);\n // TokenType\n tBuf.writeUInt8(TOKEN_TYPE.COLMETADATA);\n // Count\n tBuf.writeUInt16LE(this.columns.length);\n\n for (let j = 0, len = this.columns.length; j < len; j++) {\n const c = this.columns[j];\n // UserType\n if (this.options.tdsVersion < '7_2') {\n tBuf.writeUInt16LE(0);\n } else {\n tBuf.writeUInt32LE(0);\n }\n\n // Flags\n let flags = FLAGS.updateableReadWrite;\n if (c.nullable) {\n flags |= FLAGS.nullable;\n } else if (c.nullable === undefined && this.options.tdsVersion >= '7_2') {\n flags |= FLAGS.nullableUnknown;\n }\n tBuf.writeUInt16LE(flags);\n\n // TYPE_INFO\n tBuf.writeBuffer(c.type.generateTypeInfo(c, this.options));\n\n // TableName\n if (c.type.hasTableName) {\n tBuf.writeUsVarchar(this.table, 'ucs2');\n }\n\n // ColName\n tBuf.writeBVarchar(c.name, 'ucs2');\n }\n return tBuf.data;\n }\n\n /**\n * Sets a timeout for this bulk load.\n *\n * ```js\n * bulkLoad.setTimeout(timeout);\n * ```\n *\n * @param timeout The number of milliseconds before the bulk load is considered failed, or 0 for no timeout.\n * When no timeout is set for the bulk load, the [[ConnectionOptions.requestTimeout]] of the Connection is used.\n */\n setTimeout(timeout?: number) {\n this.timeout = timeout;\n }\n\n /**\n * @private\n */\n createDoneToken() {\n // It might be nice to make DoneToken a class if anything needs to create them, but for now, just do it here\n const tBuf = new WritableTrackingBuffer(this.options.tdsVersion < '7_2' ? 9 : 13);\n tBuf.writeUInt8(TOKEN_TYPE.DONE);\n const status = DONE_STATUS.FINAL;\n tBuf.writeUInt16LE(status);\n tBuf.writeUInt16LE(0); // CurCmd (TDS ignores this)\n tBuf.writeUInt32LE(0); // row count - doesn't really matter\n if (this.options.tdsVersion >= '7_2') {\n tBuf.writeUInt32LE(0); // row count is 64 bits in >= TDS 7.2\n }\n return tBuf.data;\n }\n\n /**\n * @private\n */\n cancel() {\n if (this.canceled) {\n return;\n }\n\n this.canceled = true;\n this.emit('cancel');\n }\n}\n\nexport default BulkLoad;\nmodule.exports = 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