typeorm
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Data-Mapper ORM for TypeScript and ES2021+. Supports MySQL/MariaDB, PostgreSQL, MS SQL Server, Oracle, SAP HANA, SQLite, MongoDB databases.
924 lines (922 loc) • 36.9 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.SqlServerDriver = void 0;
const ConnectionIsNotSetError_1 = require("../../error/ConnectionIsNotSetError");
const DriverPackageNotInstalledError_1 = require("../../error/DriverPackageNotInstalledError");
const DriverUtils_1 = require("../DriverUtils");
const SqlServerQueryRunner_1 = require("./SqlServerQueryRunner");
const DateUtils_1 = require("../../util/DateUtils");
const PlatformTools_1 = require("../../platform/PlatformTools");
const RdbmsSchemaBuilder_1 = require("../../schema-builder/RdbmsSchemaBuilder");
const MssqlParameter_1 = require("./MssqlParameter");
const TableColumn_1 = require("../../schema-builder/table/TableColumn");
const OrmUtils_1 = require("../../util/OrmUtils");
const ApplyValueTransformers_1 = require("../../util/ApplyValueTransformers");
const error_1 = require("../../error");
const InstanceChecker_1 = require("../../util/InstanceChecker");
const FindOperator_1 = require("../../find-options/FindOperator");
/**
* Organizes communication with SQL Server DBMS.
*/
class SqlServerDriver {
// -------------------------------------------------------------------------
// Constructor
// -------------------------------------------------------------------------
constructor(connection) {
/**
* Pool for slave databases.
* Used in replication.
*/
this.slaves = [];
/**
* Indicates if replication is enabled.
*/
this.isReplicated = false;
/**
* Indicates if tree tables are supported by this driver.
*/
this.treeSupport = true;
/**
* Represent transaction support by this driver
*/
this.transactionSupport = "simple";
/**
* Gets list of supported column data types by a driver.
*
* @see https://docs.microsoft.com/en-us/sql/t-sql/data-types/data-types-transact-sql
*/
this.supportedDataTypes = [
"int",
"bigint",
"bit",
"decimal",
"money",
"numeric",
"smallint",
"smallmoney",
"tinyint",
"float",
"real",
"date",
"datetime2",
"datetime",
"datetimeoffset",
"smalldatetime",
"time",
"char",
"varchar",
"text",
"nchar",
"nvarchar",
"ntext",
"binary",
"image",
"varbinary",
"hierarchyid",
"sql_variant",
"timestamp",
"uniqueidentifier",
"xml",
"geometry",
"geography",
"rowversion",
];
/**
* Returns type of upsert supported by driver if any
*/
this.supportedUpsertTypes = ["merge-into"];
/**
* Gets list of spatial column data types.
*/
this.spatialTypes = ["geometry", "geography"];
/**
* Gets list of column data types that support length by a driver.
*/
this.withLengthColumnTypes = [
"char",
"varchar",
"nchar",
"nvarchar",
"binary",
"varbinary",
];
/**
* Gets list of column data types that support precision by a driver.
*/
this.withPrecisionColumnTypes = [
"decimal",
"numeric",
"time",
"datetime2",
"datetimeoffset",
];
/**
* Gets list of column data types that support scale by a driver.
*/
this.withScaleColumnTypes = ["decimal", "numeric"];
/**
* Orm has special columns and we need to know what database column types should be for those types.
* Column types are driver dependant.
*/
this.mappedDataTypes = {
createDate: "datetime2",
createDateDefault: "getdate()",
updateDate: "datetime2",
updateDateDefault: "getdate()",
deleteDate: "datetime2",
deleteDateNullable: true,
version: "int",
treeLevel: "int",
migrationId: "int",
migrationName: "varchar",
migrationTimestamp: "bigint",
cacheId: "int",
cacheIdentifier: "nvarchar",
cacheTime: "bigint",
cacheDuration: "int",
cacheQuery: "nvarchar(MAX)",
cacheResult: "nvarchar(MAX)",
metadataType: "varchar",
metadataDatabase: "varchar",
metadataSchema: "varchar",
metadataTable: "varchar",
metadataName: "varchar",
metadataValue: "nvarchar(MAX)",
};
/**
* The prefix used for the parameters
*/
this.parametersPrefix = "@";
/**
* 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.
*/
this.dataTypeDefaults = {
char: { length: 1 },
nchar: { length: 1 },
varchar: { length: 255 },
nvarchar: { length: 255 },
binary: { length: 1 },
varbinary: { length: 1 },
decimal: { precision: 18, scale: 0 },
numeric: { precision: 18, scale: 0 },
time: { precision: 7 },
datetime2: { precision: 7 },
datetimeoffset: { precision: 7 },
};
this.cteCapabilities = {
enabled: true,
// todo: enable it for SQL Server - it's partially supported, but there are issues with generation of non-standard OUTPUT clause
writable: false,
};
/**
* Max length allowed by MSSQL Server for aliases (identifiers).
* @see https://docs.microsoft.com/en-us/sql/sql-server/maximum-capacity-specifications-for-sql-server
*/
this.maxAliasLength = 128;
this.connection = connection;
this.options = connection.options;
this.isReplicated = this.options.replication ? true : false;
// load mssql package
this.loadDependencies();
this.database = DriverUtils_1.DriverUtils.buildDriverOptions(this.options.replication
? this.options.replication.master
: this.options).database;
this.schema = DriverUtils_1.DriverUtils.buildDriverOptions(this.options).schema;
// Object.assign(connection.options, DriverUtils.buildDriverOptions(connection.options)); // todo: do it better way
// validate options to make sure everything is set
// if (!this.options.host)
// throw new DriverOptionNotSetError("host");
// if (!this.options.username)
// throw new DriverOptionNotSetError("username");
// if (!this.options.database)
// throw new DriverOptionNotSetError("database");
}
// -------------------------------------------------------------------------
// Public Implemented Methods
// -------------------------------------------------------------------------
/**
* Performs connection to the database.
* Based on pooling options, it can either create connection immediately,
* either create a pool and create connection when needed.
*/
async connect() {
if (this.options.replication) {
this.slaves = await Promise.all(this.options.replication.slaves.map((slave) => {
return this.createPool(this.options, slave);
}));
this.master = await this.createPool(this.options, this.options.replication.master);
}
else {
this.master = await this.createPool(this.options, this.options);
}
if (!this.database || !this.searchSchema) {
const queryRunner = this.createQueryRunner("master");
if (!this.database) {
this.database = await queryRunner.getCurrentDatabase();
}
if (!this.searchSchema) {
this.searchSchema = await queryRunner.getCurrentSchema();
}
await queryRunner.release();
}
if (!this.schema) {
this.schema = this.searchSchema;
}
}
/**
* Makes any action after connection (e.g. create extensions in Postgres driver).
*/
afterConnect() {
return Promise.resolve();
}
/**
* Closes connection with the database.
*/
async disconnect() {
if (!this.master) {
throw new ConnectionIsNotSetError_1.ConnectionIsNotSetError("mssql");
}
await this.closePool(this.master);
await Promise.all(this.slaves.map((slave) => this.closePool(slave)));
this.master = undefined;
this.slaves = [];
}
/**
* Closes connection pool.
*/
async closePool(pool) {
return new Promise((ok, fail) => {
pool.close((err) => (err ? fail(err) : ok()));
});
}
/**
* Creates a schema builder used to build and sync a schema.
*/
createSchemaBuilder() {
return new RdbmsSchemaBuilder_1.RdbmsSchemaBuilder(this.connection);
}
/**
* Creates a query runner used to execute database queries.
*/
createQueryRunner(mode) {
return new SqlServerQueryRunner_1.SqlServerQueryRunner(this, mode);
}
/**
* Replaces parameters in the given sql with special escaping character
* and an array of parameter names to be passed to a query.
*/
escapeQueryWithParameters(sql, parameters, nativeParameters) {
const escapedParameters = Object.keys(nativeParameters).map((key) => nativeParameters[key]);
if (!parameters || !Object.keys(parameters).length)
return [sql, escapedParameters];
const parameterIndexMap = new Map();
sql = sql.replace(/:(\.\.\.)?([A-Za-z0-9_.]+)/g, (full, isArray, key) => {
if (!parameters.hasOwnProperty(key)) {
return full;
}
if (parameterIndexMap.has(key)) {
return this.parametersPrefix + parameterIndexMap.get(key);
}
const value = parameters[key];
if (isArray) {
return value
.map((v) => {
escapedParameters.push(v);
return this.createParameter(key, escapedParameters.length - 1);
})
.join(", ");
}
if (typeof value === "function") {
return value();
}
escapedParameters.push(value);
parameterIndexMap.set(key, escapedParameters.length - 1);
return this.createParameter(key, escapedParameters.length - 1);
}); // todo: make replace only in value statements, otherwise problems
return [sql, escapedParameters];
}
/**
* Escapes a column name.
*/
escape(columnName) {
return `"${columnName}"`;
}
/**
* Build full table name with database name, schema name and table name.
* E.g. myDB.mySchema.myTable
*/
buildTableName(tableName, schema, database) {
const tablePath = [tableName];
if (schema) {
tablePath.unshift(schema);
}
if (database) {
if (!schema) {
tablePath.unshift("");
}
tablePath.unshift(database);
}
return tablePath.join(".");
}
/**
* Parse a target table name or other types and return a normalized table definition.
*/
parseTableName(target) {
const driverDatabase = this.database;
const driverSchema = this.schema;
if (InstanceChecker_1.InstanceChecker.isTable(target) || InstanceChecker_1.InstanceChecker.isView(target)) {
const parsed = this.parseTableName(target.name);
return {
database: target.database || parsed.database || driverDatabase,
schema: target.schema || parsed.schema || driverSchema,
tableName: parsed.tableName,
};
}
if (InstanceChecker_1.InstanceChecker.isTableForeignKey(target)) {
const parsed = this.parseTableName(target.referencedTableName);
return {
database: target.referencedDatabase ||
parsed.database ||
driverDatabase,
schema: target.referencedSchema || parsed.schema || driverSchema,
tableName: parsed.tableName,
};
}
if (InstanceChecker_1.InstanceChecker.isEntityMetadata(target)) {
// EntityMetadata tableName is never a path
return {
database: target.database || driverDatabase,
schema: target.schema || driverSchema,
tableName: target.tableName,
};
}
const parts = target.split(".");
if (parts.length === 3) {
return {
database: parts[0] || driverDatabase,
schema: parts[1] || driverSchema,
tableName: parts[2],
};
}
else if (parts.length === 2) {
return {
database: driverDatabase,
schema: parts[0],
tableName: parts[1],
};
}
else {
return {
database: driverDatabase,
schema: driverSchema,
tableName: target,
};
}
}
/**
* Prepares given value to a value to be persisted, based on its column type and metadata.
*/
preparePersistentValue(value, columnMetadata) {
if (columnMetadata.transformer)
value = ApplyValueTransformers_1.ApplyValueTransformers.transformTo(columnMetadata.transformer, value);
if (value === null || value === undefined)
return value;
if (columnMetadata.type === Boolean) {
return value === true ? 1 : 0;
}
else if (columnMetadata.type === "date") {
return DateUtils_1.DateUtils.mixedDateToDate(value);
}
else if (columnMetadata.type === "time") {
return DateUtils_1.DateUtils.mixedTimeToDate(value);
}
else if (columnMetadata.type === "datetime" ||
columnMetadata.type === "smalldatetime" ||
columnMetadata.type === Date) {
return DateUtils_1.DateUtils.mixedDateToDate(value, false, false);
}
else if (columnMetadata.type === "datetime2" ||
columnMetadata.type === "datetimeoffset") {
return DateUtils_1.DateUtils.mixedDateToDate(value, false, true);
}
else if (columnMetadata.type === "simple-array") {
return DateUtils_1.DateUtils.simpleArrayToString(value);
}
else if (columnMetadata.type === "simple-json") {
return DateUtils_1.DateUtils.simpleJsonToString(value);
}
else if (columnMetadata.type === "simple-enum") {
return DateUtils_1.DateUtils.simpleEnumToString(value);
}
return value;
}
/**
* Prepares given value to a value to be persisted, based on its column type or metadata.
*/
prepareHydratedValue(value, columnMetadata) {
if (value === null || value === undefined)
return columnMetadata.transformer
? ApplyValueTransformers_1.ApplyValueTransformers.transformFrom(columnMetadata.transformer, value)
: value;
if (columnMetadata.type === Boolean) {
value = value ? true : false;
}
else if (columnMetadata.type === "datetime" ||
columnMetadata.type === Date ||
columnMetadata.type === "datetime2" ||
columnMetadata.type === "smalldatetime" ||
columnMetadata.type === "datetimeoffset") {
value = DateUtils_1.DateUtils.normalizeHydratedDate(value);
}
else if (columnMetadata.type === "date") {
value = DateUtils_1.DateUtils.mixedDateToDateString(value);
}
else if (columnMetadata.type === "time") {
value = DateUtils_1.DateUtils.mixedTimeToString(value);
}
else if (columnMetadata.type === "simple-array") {
value = DateUtils_1.DateUtils.stringToSimpleArray(value);
}
else if (columnMetadata.type === "simple-json") {
value = DateUtils_1.DateUtils.stringToSimpleJson(value);
}
else if (columnMetadata.type === "simple-enum") {
value = DateUtils_1.DateUtils.stringToSimpleEnum(value, columnMetadata);
}
else if (columnMetadata.type === Number) {
// convert to number if number
value = !isNaN(+value) ? parseInt(value) : value;
}
if (columnMetadata.transformer)
value = ApplyValueTransformers_1.ApplyValueTransformers.transformFrom(columnMetadata.transformer, value);
return value;
}
/**
* Creates a database type from a given column metadata.
*/
normalizeType(column) {
if (column.type === Number || column.type === "integer") {
return "int";
}
else if (column.type === String) {
return "nvarchar";
}
else if (column.type === Date) {
return "datetime";
}
else if (column.type === Boolean) {
return "bit";
}
else if (column.type === Buffer) {
return "binary";
}
else if (column.type === "uuid") {
return "uniqueidentifier";
}
else if (column.type === "simple-array" ||
column.type === "simple-json") {
return "ntext";
}
else if (column.type === "simple-enum") {
return "nvarchar";
}
else if (column.type === "dec") {
return "decimal";
}
else if (column.type === "double precision") {
return "float";
}
else if (column.type === "rowversion") {
return "timestamp"; // the rowversion type's name in SQL server metadata is timestamp
}
else {
return column.type || "";
}
}
/**
* Normalizes "default" value of the column.
*/
normalizeDefault(columnMetadata) {
const defaultValue = columnMetadata.default;
if (typeof defaultValue === "number") {
return `${defaultValue}`;
}
if (typeof defaultValue === "boolean") {
return defaultValue ? "1" : "0";
}
if (typeof defaultValue === "function") {
const value = defaultValue();
if (value.toUpperCase() === "CURRENT_TIMESTAMP") {
return "getdate()";
}
return value;
}
if (typeof defaultValue === "string") {
return `'${defaultValue}'`;
}
if (defaultValue === undefined || defaultValue === null) {
return undefined;
}
return `${defaultValue}`;
}
/**
* Normalizes "isUnique" value of the column.
*/
normalizeIsUnique(column) {
return column.entityMetadata.uniques.some((uq) => uq.columns.length === 1 && uq.columns[0] === column);
}
/**
* Returns default column lengths, which is required on column creation.
*/
getColumnLength(column) {
if (column.length)
return column.length.toString();
if (column.type === "varchar" ||
column.type === "nvarchar" ||
column.type === String)
return "255";
return "";
}
/**
* Creates column type definition including length, precision and scale
*/
createFullType(column) {
// The Database Engine determines the data type of the computed column by applying the rules
// of data type precedence to the expressions specified in the formula.
if (column.asExpression)
return "";
let type = column.type;
// used 'getColumnLength()' method, because SqlServer sets `varchar` and `nvarchar` length to 1 by default.
if (this.getColumnLength(column)) {
type += `(${this.getColumnLength(column)})`;
}
else if (column.precision !== null &&
column.precision !== undefined &&
column.scale !== null &&
column.scale !== undefined) {
type += `(${column.precision},${column.scale})`;
}
else if (column.precision !== null &&
column.precision !== undefined) {
type += `(${column.precision})`;
}
if (column.isArray)
type += " array";
return type;
}
/**
* 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() {
if (!this.master) {
return Promise.reject(new error_1.TypeORMError("Driver not Connected"));
}
return Promise.resolve(this.master);
}
/**
* 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() {
if (!this.slaves.length)
return this.obtainMasterConnection();
const random = Math.floor(Math.random() * this.slaves.length);
return Promise.resolve(this.slaves[random]);
}
/**
* Creates generated map of values generated or returned by database after INSERT query.
*/
createGeneratedMap(metadata, insertResult) {
if (!insertResult)
return undefined;
return Object.keys(insertResult).reduce((map, key) => {
const column = metadata.findColumnWithDatabaseName(key);
if (column) {
OrmUtils_1.OrmUtils.mergeDeep(map, column.createValueMap(this.prepareHydratedValue(insertResult[key], column)));
}
return map;
}, {});
}
/**
* Differentiate columns of this table and columns from the given column metadatas columns
* and returns only changed.
*/
findChangedColumns(tableColumns, columnMetadatas) {
return columnMetadatas.filter((columnMetadata) => {
const tableColumn = tableColumns.find((c) => c.name === columnMetadata.databaseName);
if (!tableColumn)
return false; // we don't need new columns, we only need exist and changed
const isColumnChanged = tableColumn.name !== columnMetadata.databaseName ||
this.compareColumnType(tableColumn, columnMetadata) ||
this.compareColumnLength(tableColumn, columnMetadata) ||
tableColumn.precision !== columnMetadata.precision ||
tableColumn.scale !== columnMetadata.scale ||
// || tableColumn.comment !== columnMetadata.comment || // todo
tableColumn.isGenerated !== columnMetadata.isGenerated ||
(!tableColumn.isGenerated &&
this.lowerDefaultValueIfNecessary(this.normalizeDefault(columnMetadata)) !==
this.lowerDefaultValueIfNecessary(tableColumn.default)) || // we included check for generated here, because generated columns already can have default values
tableColumn.isPrimary !== columnMetadata.isPrimary ||
tableColumn.isNullable !== columnMetadata.isNullable ||
tableColumn.asExpression !== columnMetadata.asExpression ||
tableColumn.generatedType !== columnMetadata.generatedType ||
tableColumn.isUnique !==
this.normalizeIsUnique(columnMetadata) ||
(tableColumn.enum &&
columnMetadata.enum &&
!OrmUtils_1.OrmUtils.isArraysEqual(tableColumn.enum, columnMetadata.enum.map((val) => val + "")));
// DEBUG SECTION
// if (isColumnChanged) {
// console.log("table:", columnMetadata.entityMetadata.tableName)
// console.log(
// "name:",
// tableColumn.name,
// columnMetadata.databaseName,
// )
// console.log(
// "type:",
// tableColumn.type,
// this.normalizeType(columnMetadata),
// this.compareColumnType(tableColumn, columnMetadata),
// )
// console.log(
// "length:",
// tableColumn.length,
// columnMetadata.length,
// this.compareColumnLength(tableColumn, columnMetadata),
// )
// console.log(
// "precision:",
// tableColumn.precision,
// columnMetadata.precision,
// )
// console.log("scale:", tableColumn.scale, columnMetadata.scale)
// console.log(
// "isGenerated:",
// tableColumn.isGenerated,
// columnMetadata.isGenerated,
// )
// console.log(
// "isGenerated 2:",
// !tableColumn.isGenerated &&
// this.lowerDefaultValueIfNecessary(
// this.normalizeDefault(columnMetadata),
// ) !==
// this.lowerDefaultValueIfNecessary(
// tableColumn.default,
// ),
// )
// console.log(
// "isPrimary:",
// tableColumn.isPrimary,
// columnMetadata.isPrimary,
// )
// console.log(
// "isNullable:",
// tableColumn.isNullable,
// columnMetadata.isNullable,
// )
// console.log(
// "asExpression:",
// tableColumn.asExpression,
// columnMetadata.asExpression,
// )
// console.log(
// "generatedType:",
// tableColumn.generatedType,
// columnMetadata.generatedType,
// )
// console.log(
// "isUnique:",
// tableColumn.isUnique,
// this.normalizeIsUnique(columnMetadata),
// )
// console.log("==========================================")
// }
return isColumnChanged;
});
}
/**
* Returns true if driver supports RETURNING / OUTPUT statement.
*/
isReturningSqlSupported() {
if (this.options.options &&
this.options.options.disableOutputReturning) {
return false;
}
return true;
}
/**
* Returns true if driver supports uuid values generation on its own.
*/
isUUIDGenerationSupported() {
return true;
}
/**
* Returns true if driver supports fulltext indices.
*/
isFullTextColumnTypeSupported() {
return false;
}
/**
* Creates an escaped parameter.
*/
createParameter(parameterName, index) {
return this.parametersPrefix + index;
}
// -------------------------------------------------------------------------
// Public Methods
// -------------------------------------------------------------------------
/**
* Sql server's parameters needs to be wrapped into special object with type information about this value.
* This method wraps given value into MssqlParameter based on its column definition.
*/
parametrizeValue(column, value) {
// if its already MssqlParameter then simply return it
if (InstanceChecker_1.InstanceChecker.isMssqlParameter(value))
return value;
const normalizedType = this.normalizeType({ type: column.type });
if (column.length) {
return new MssqlParameter_1.MssqlParameter(value, normalizedType, column.length);
}
else if (column.precision !== null &&
column.precision !== undefined &&
column.scale !== null &&
column.scale !== undefined) {
return new MssqlParameter_1.MssqlParameter(value, normalizedType, column.precision, column.scale);
}
else if (column.precision !== null &&
column.precision !== undefined) {
return new MssqlParameter_1.MssqlParameter(value, normalizedType, column.precision);
}
else if (column.scale !== null && column.scale !== undefined) {
return new MssqlParameter_1.MssqlParameter(value, normalizedType, column.scale);
}
return new MssqlParameter_1.MssqlParameter(value, normalizedType);
}
/**
* Recursively wraps values (including those inside FindOperators) into MssqlParameter instances,
* ensuring correct type metadata is passed to the SQL Server driver.
*
* - If the value is a FindOperator containing an array, all elements are individually parametrized.
* - If the value is a non-raw FindOperator, a transformation is applied to its internal value.
* - Otherwise, the value is passed directly to parametrizeValue for wrapping.
*
* This ensures SQL Server receives properly typed parameters for queries involving operators like
* In, MoreThan, Between, etc.
*/
parametrizeValues(column, value) {
if (value instanceof FindOperator_1.FindOperator) {
if (value.type !== "raw") {
value.transformValue({
to: (v) => this.parametrizeValues(column, v),
from: (v) => v,
});
}
return value;
}
return this.parametrizeValue(column, value);
}
/**
* Sql server's parameters needs to be wrapped into special object with type information about this value.
* This method wraps all values of the given object into MssqlParameter based on their column definitions in the given table.
*/
parametrizeMap(tablePath, map) {
// find metadata for the given table
if (!this.connection.hasMetadata(tablePath))
// if no metadata found then we can't proceed because we don't have columns and their types
return map;
const metadata = this.connection.getMetadata(tablePath);
return Object.keys(map).reduce((newMap, key) => {
const value = map[key];
// find column metadata
const column = metadata.findColumnWithDatabaseName(key);
if (!column)
// if we didn't find a column then we can't proceed because we don't have a column type
return value;
newMap[key] = this.parametrizeValue(column, value);
return newMap;
}, {});
}
buildTableVariableDeclaration(identifier, columns) {
const outputColumns = columns.map((column) => {
return `${this.escape(column.databaseName)} ${this.createFullType(new TableColumn_1.TableColumn({
name: column.databaseName,
type: this.normalizeType(column),
length: column.length,
isNullable: column.isNullable,
isArray: column.isArray,
}))}`;
});
return `DECLARE ${identifier} TABLE (${outputColumns.join(", ")})`;
}
// -------------------------------------------------------------------------
// Protected Methods
// -------------------------------------------------------------------------
/**
* If driver dependency is not given explicitly, then try to load it via "require".
*/
loadDependencies() {
try {
const mssql = this.options.driver || PlatformTools_1.PlatformTools.load("mssql");
this.mssql = mssql;
}
catch (e) {
// todo: better error for browser env
throw new DriverPackageNotInstalledError_1.DriverPackageNotInstalledError("SQL Server", "mssql");
}
}
compareColumnType(tableColumn, columnMetadata) {
// The Database Engine determines the data type of the computed column by applying the rules
// of data type precedence to the expressions specified in the formula.
if (columnMetadata.asExpression)
return false;
return tableColumn.type !== this.normalizeType(columnMetadata);
}
compareColumnLength(tableColumn, columnMetadata) {
// The Database Engine determines the data type of the computed column by applying the rules
// of data type precedence to the expressions specified in the formula.
if (columnMetadata.asExpression)
return false;
return (tableColumn.length.toUpperCase() !==
this.getColumnLength(columnMetadata).toUpperCase());
}
lowerDefaultValueIfNecessary(value) {
// SqlServer saves function calls in default value as lowercase https://github.com/typeorm/typeorm/issues/2733
if (!value) {
return value;
}
return value
.split(`'`)
.map((v, i) => {
return i % 2 === 1 ? v : v.toLowerCase();
})
.join(`'`);
}
/**
* Creates a new connection pool for a given database credentials.
*/
createPool(options, credentials) {
credentials = Object.assign({}, credentials, DriverUtils_1.DriverUtils.buildDriverOptions(credentials)); // todo: do it better way
// todo: credentials.domain is deprecation. remove it in future
const authentication = !credentials.domain
? credentials.authentication
: {
type: "ntlm",
options: {
domain: credentials.domain,
userName: credentials.username,
password: credentials.password,
},
};
// build connection options for the driver
const connectionOptions = Object.assign({}, {
connectionTimeout: this.options.connectionTimeout,
requestTimeout: this.options.requestTimeout,
stream: this.options.stream,
pool: this.options.pool,
options: this.options.options,
}, {
server: credentials.host,
database: credentials.database,
port: credentials.port,
user: credentials.username,
password: credentials.password,
authentication: authentication,
}, options.extra || {});
// set default useUTC option if it hasn't been set
if (!connectionOptions.options) {
connectionOptions.options = { useUTC: false };
}
else if (!connectionOptions.options.useUTC) {
Object.assign(connectionOptions.options, { useUTC: false });
}
// Match the next release of tedious for configuration options
// Also prevents warning messages.
Object.assign(connectionOptions.options, { enableArithAbort: true });
// pooling is enabled either when its set explicitly to true,
// either when its not defined at all (e.g. enabled by default)
return new Promise((ok, fail) => {
const pool = new this.mssql.ConnectionPool(connectionOptions);
const { logger } = this.connection;
const poolErrorHandler = (options.pool && options.pool.errorHandler) ||
((error) => logger.log("warn", `MSSQL pool raised an error. ${error}`));
/**
* Attaching an error handler to pool errors is essential, as, otherwise, errors raised will go unhandled and
* cause the hosting app to crash.
*/
pool.on("error", poolErrorHandler);
const connection = pool.connect((err) => {
if (err)
return fail(err);
ok(connection);
});
});
}
}
exports.SqlServerDriver = SqlServerDriver;
//# sourceMappingURL=SqlServerDriver.js.map