504 lines
17 KiB
JavaScript
504 lines
17 KiB
JavaScript
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'use strict';
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const AbstractQuery = require('../abstract/query');
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const sequelizeErrors = require('../../errors');
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const parserStore = require('../parserStore')('db2');
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const _ = require('lodash');
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const { logger } = require('../../utils/logger');
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const moment = require('moment');
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const debug = logger.debugContext('sql:db2');
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class Query extends AbstractQuery {
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getInsertIdField() {
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return 'id';
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}
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getSQLTypeFromJsType(value) {
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const param = { ParamType: 'INPUT', Data: value };
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if (Buffer.isBuffer(value)) {
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param.DataType = 'BLOB';
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return param;
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}
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return value;
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}
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async _run(connection, sql, parameters) {
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this.sql = sql;
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const benchmark = this.sequelize.options.benchmark || this.options.benchmark;
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let queryBegin;
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if (benchmark) {
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queryBegin = Date.now();
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} else {
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this.sequelize.log(`Executing (${ this.connection.uuid || 'default' }): ${ this.sql}`, this.options);
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}
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return new Promise((resolve, reject) => {
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// TRANSACTION SUPPORT
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if (_.startsWith(this.sql, 'BEGIN TRANSACTION')) {
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connection.beginTransaction(err => {
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if (err) {
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reject(this.formatError(err));
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} else {
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resolve(this.formatResults());
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}
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});
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} else if (_.startsWith(this.sql, 'COMMIT TRANSACTION')) {
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connection.commitTransaction(err => {
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if (err) {
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reject(this.formatError(err));
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} else {
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resolve(this.formatResults());
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}
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});
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} else if (_.startsWith(this.sql, 'ROLLBACK TRANSACTION')) {
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connection.rollbackTransaction(err => {
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if (err) {
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reject(this.formatError(err));
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} else {
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resolve(this.formatResults());
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}
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});
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} else if (_.startsWith(this.sql, 'SAVE TRANSACTION')) {
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connection.commitTransaction(err => {
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if (err) {
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reject(this.formatError(err));
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} else {
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connection.beginTransaction(err => {
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if (err) {
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reject(this.formatError(err));
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} else {
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resolve(this.formatResults());
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}
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});
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}
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}, this.options.transaction.name);
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} else {
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const params = [];
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if (parameters) {
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_.forOwn(parameters, (value, key) => {
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const param = this.getSQLTypeFromJsType(value, key);
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params.push(param);
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});
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}
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const SQL = this.sql.toUpperCase();
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let newSql = this.sql;
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if ((this.isSelectQuery() || _.startsWith(SQL, 'SELECT ')) &&
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SQL.indexOf(' FROM ', 8) === -1 ) {
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if (this.sql.charAt(this.sql.length - 1) === ';') {
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newSql = this.sql.slice(0, this.sql.length - 1);
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}
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newSql += ' FROM SYSIBM.SYSDUMMY1;';
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}
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connection.prepare(newSql, (err, stmt) => {
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if (err) { reject(this.formatError(err)); }
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stmt.execute(params, (err, result, outparams) => {
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debug(`executed(${this.connection.uuid || 'default'}):${newSql} ${parameters ? JSON.stringify(parameters) : ''}`);
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if (benchmark) {
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this.sequelize.log(`Executed (${ this.connection.uuid || 'default' }): ${ newSql} ${parameters ? JSON.stringify(parameters) : ''}`, Date.now() - queryBegin, this.options);
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}
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if (err && err.message) {
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err = this.filterSQLError(err, this.sql, connection);
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if (err === null) {
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stmt.closeSync();
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resolve(this.formatResults([], 0));
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}
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}
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if (err) {
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err.sql = sql;
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stmt.closeSync();
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reject(this.formatError(err, connection, parameters));
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} else {
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let data = [];
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let metadata = [];
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let affectedRows = 0;
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if (typeof result === 'object') {
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if (_.startsWith(this.sql, 'DELETE FROM ')) {
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affectedRows = result.getAffectedRowsSync();
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} else {
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data = result.fetchAllSync();
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metadata = result.getColumnMetadataSync();
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}
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result.closeSync();
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}
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stmt.closeSync();
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const datalen = data.length;
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if (datalen > 0) {
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const coltypes = {};
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for (let i = 0; i < metadata.length; i++) {
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coltypes[metadata[i].SQL_DESC_NAME] =
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metadata[i].SQL_DESC_TYPE_NAME;
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}
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for (let i = 0; i < datalen; i++) {
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for (const column in data[i]) {
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const parse = parserStore.get(coltypes[column]);
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const value = data[i][column];
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if (value !== null) {
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if (parse) {
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data[i][column] = parse(value);
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} else if (coltypes[column] === 'TIMESTAMP') {
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data[i][column] = new Date(moment.utc(value));
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} else if (coltypes[column] === 'BLOB') {
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data[i][column] = new Buffer.from(value);
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} else if (coltypes[column].indexOf('FOR BIT DATA') > 0) {
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data[i][column] = new Buffer.from(value, 'hex');
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}
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}
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}
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}
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if (outparams && outparams.length) {
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data.unshift(outparams);
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}
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resolve(this.formatResults(data, datalen, metadata, connection));
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} else {
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resolve(this.formatResults(data, affectedRows));
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}
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}
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});
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});
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}
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});
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}
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async run(sql, parameters) {
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return await this._run(this.connection, sql, parameters);
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}
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static formatBindParameters(sql, values, dialect) {
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let bindParam = {};
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const replacementFunc = (match, key, values) => {
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if (values[key] !== undefined) {
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bindParam[key] = values[key];
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return '?';
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}
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return undefined;
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};
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sql = AbstractQuery.formatBindParameters(sql, values, dialect, replacementFunc)[0];
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if (Array.isArray(values) && typeof values[0] === 'object') {
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bindParam = values;
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}
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return [sql, bindParam];
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}
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filterSQLError(err, sql, connection) {
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if (err.message.search('SQL0204N') != -1 && _.startsWith(sql, 'DROP ')) {
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err = null; // Ignore table not found error for drop table.
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} else if (err.message.search('SQL0443N') != -1) {
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if (this.isDropSchemaQuery()) {
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// Delete ERRORSCHEMA.ERRORTABLE if it exist.
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connection.querySync('DROP TABLE ERRORSCHEMA.ERRORTABLE;');
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// Retry deleting the schema
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connection.querySync(this.sql);
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}
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err = null; // Ignore drop schema error.
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} else if (err.message.search('SQL0601N') != -1) {
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const match = err.message.match(/SQL0601N {2}The name of the object to be created is identical to the existing name "(.*)" of type "(.*)"./);
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if (match && match.length > 1 && match[2] === 'TABLE') {
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let table;
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const mtarray = match[1].split('.');
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if (mtarray[1]) {
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table = `"${mtarray[0]}"."${mtarray[1]}"`;
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} else {
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table = `"${mtarray[0]}"`;
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}
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if (connection.dropTable !== false) {
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connection.querySync(`DROP TABLE ${table}`);
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err = connection.querySync(sql);
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}
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else {
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err = null;
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}
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} else {
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err = null; // Ignore create schema error.
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}
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} else if (err.message.search('SQL0911N') != -1) {
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if (err.message.search('Reason code "2"') != -1) {
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err = null; // Ignore deadlock error due to program logic.
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}
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} else if (err.message.search('SQL0605W') != -1) {
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err = null; // Ignore warning.
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} else if (err.message.search('SQL0668N') != -1 &&
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_.startsWith(sql, 'ALTER TABLE ')) {
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connection.querySync(`CALL SYSPROC.ADMIN_CMD('REORG TABLE ${sql.substring(12).split(' ')[0]}')`);
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err = connection.querySync(sql);
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}
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if (err && err.length === 0) { err = null; }
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return err;
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}
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/**
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* High level function that handles the results of a query execution.
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*
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*
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* Example:
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* query.formatResults([
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* {
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* id: 1, // this is from the main table
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* attr2: 'snafu', // this is from the main table
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* Tasks.id: 1, // this is from the associated table
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* Tasks.title: 'task' // this is from the associated table
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* }
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* ])
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*
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* @param {Array} data - The result of the query execution.
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* @param {Integer} rowCount - The number of affected rows.
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* @param {Array} metadata - Metadata of the returned result set.
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* @param {object} conn - The connection object.
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* @private
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*/
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formatResults(data, rowCount, metadata, conn) {
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let result = this.instance;
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if (this.isInsertQuery(data, metadata)) {
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this.handleInsertQuery(data, metadata);
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if (!this.instance) {
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if (this.options.plain) {
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const record = data[0];
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result = record[Object.keys(record)[0]];
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} else {
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result = data;
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}
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}
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}
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if (this.isShowTablesQuery()) {
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result = data;
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} else if (this.isDescribeQuery()) {
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result = {};
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for (const _result of data) {
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if (_result.Default) {
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_result.Default = _result.Default.replace("('", '').replace("')", '').replace(/'/g, '');
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}
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result[_result.Name] = {
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type: _result.Type.toUpperCase(),
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allowNull: _result.IsNull === 'Y' ? true : false,
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defaultValue: _result.Default,
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primaryKey: _result.KeySeq > 0,
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autoIncrement: _result.IsIdentity === 'Y' ? true : false,
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comment: _result.Comment
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};
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}
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} else if (this.isShowIndexesQuery()) {
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result = this.handleShowIndexesQuery(data);
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} else if (this.isSelectQuery()) {
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result = this.handleSelectQuery(data);
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} else if (this.isUpsertQuery()) {
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result = data;
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} else if (this.isDropSchemaQuery()) {
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result = data[0];
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if (conn) {
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const query = 'DROP TABLE ERRORSCHEMA.ERRORTABLE';
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conn.querySync(query);
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}
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} else if (this.isCallQuery()) {
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result = data;
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} else if (this.isBulkUpdateQuery()) {
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result = data.length;
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} else if (this.isBulkDeleteQuery()) {
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result = rowCount;
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} else if (this.isVersionQuery()) {
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result = data[0].VERSION;
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} else if (this.isForeignKeysQuery()) {
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result = data;
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} else if (this.isInsertQuery() || this.isUpdateQuery()) {
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result = [result, rowCount];
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} else if (this.isShowConstraintsQuery()) {
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result = this.handleShowConstraintsQuery(data);
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} else if (this.isRawQuery()) {
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// Db2 returns row data and metadata (affected rows etc) in a single object - let's standarize it, sorta
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result = [data, metadata];
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} else {
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result = data;
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}
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return result;
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}
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handleShowTablesQuery(results) {
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return results.map(resultSet => {
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return {
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tableName: resultSet.TABLE_NAME,
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schema: resultSet.TABLE_SCHEMA
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};
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});
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}
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handleShowConstraintsQuery(data) {
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// Remove SQL Contraints from constraints list.
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return _.remove(data, constraint => {
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return !_.startsWith(constraint.constraintName, 'SQL');
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});
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}
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formatError(err, conn, parameters) {
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let match;
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if (!(err && err.message)) {
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err['message'] = 'No error message found.';
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}
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match = err.message.match(/SQL0803N {2}One or more values in the INSERT statement, UPDATE statement, or foreign key update caused by a DELETE statement are not valid because the primary key, unique constraint or unique index identified by "(\d)+" constrains table "(.*)\.(.*)" from having duplicate values for the index key./);
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if (match && match.length > 0) {
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let uniqueIndexName = '';
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let uniqueKey = '';
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const fields = {};
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let message = err.message;
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const query = `SELECT INDNAME FROM SYSCAT.INDEXES WHERE IID = ${match[1]} AND TABSCHEMA = '${match[2]}' AND TABNAME = '${match[3]}'`;
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if (!!conn && match.length > 3) {
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uniqueIndexName = conn.querySync(query);
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uniqueIndexName = uniqueIndexName[0]['INDNAME'];
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}
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if (this.model && !!uniqueIndexName) {
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uniqueKey = this.model.uniqueKeys[uniqueIndexName];
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}
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if (!uniqueKey && this.options.fields) {
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uniqueKey = this.options.fields[match[1] - 1];
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}
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if (uniqueKey) {
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if (this.options.where &&
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this.options.where[uniqueKey.column] !== undefined) {
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fields[uniqueKey.column] = this.options.where[uniqueKey.column];
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} else if (this.options.instance && this.options.instance.dataValues &&
|
||
|
|
this.options.instance.dataValues[uniqueKey.column]) {
|
||
|
|
fields[uniqueKey.column] = this.options.instance.dataValues[uniqueKey.column];
|
||
|
|
} else if (parameters) {
|
||
|
|
fields[uniqueKey.column] = parameters['0'];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (uniqueKey && !!uniqueKey.msg) {
|
||
|
|
message = uniqueKey.msg;
|
||
|
|
}
|
||
|
|
|
||
|
|
const errors = [];
|
||
|
|
_.forOwn(fields, (value, field) => {
|
||
|
|
errors.push(new sequelizeErrors.ValidationErrorItem(
|
||
|
|
this.getUniqueConstraintErrorMessage(field),
|
||
|
|
'unique violation', // sequelizeErrors.ValidationErrorItem.Origins.DB,
|
||
|
|
field,
|
||
|
|
value,
|
||
|
|
this.instance,
|
||
|
|
'not_unique'
|
||
|
|
));
|
||
|
|
});
|
||
|
|
|
||
|
|
return new sequelizeErrors.UniqueConstraintError({ message, errors, parent: err, fields });
|
||
|
|
}
|
||
|
|
|
||
|
|
match = err.message.match(/SQL0532N {2}A parent row cannot be deleted because the relationship "(.*)" restricts the deletion/) ||
|
||
|
|
err.message.match(/SQL0530N/) ||
|
||
|
|
err.message.match(/SQL0531N/);
|
||
|
|
if (match && match.length > 0) {
|
||
|
|
return new sequelizeErrors.ForeignKeyConstraintError({
|
||
|
|
fields: null,
|
||
|
|
index: match[1],
|
||
|
|
parent: err
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
match = err.message.match(/SQL0204N {2}"(.*)" is an undefined name./);
|
||
|
|
if (match && match.length > 1) {
|
||
|
|
const constraint = match[1];
|
||
|
|
let table = err.sql.match(/table "(.+?)"/i);
|
||
|
|
table = table ? table[1] : undefined;
|
||
|
|
|
||
|
|
return new sequelizeErrors.UnknownConstraintError({
|
||
|
|
message: match[0],
|
||
|
|
constraint,
|
||
|
|
table,
|
||
|
|
parent: err
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
return new sequelizeErrors.DatabaseError(err);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
isDropSchemaQuery() {
|
||
|
|
let result = false;
|
||
|
|
|
||
|
|
if (_.startsWith(this.sql, 'CALL SYSPROC.ADMIN_DROP_SCHEMA')) {
|
||
|
|
result = true;
|
||
|
|
}
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
isShowOrDescribeQuery() {
|
||
|
|
let result = false;
|
||
|
|
|
||
|
|
result = result || this.sql.toLowerCase().startsWith("select c.column_name as 'name', c.data_type as 'type', c.is_nullable as 'isnull'");
|
||
|
|
result = result || this.sql.toLowerCase().startsWith('select tablename = t.name, name = ind.name,');
|
||
|
|
result = result || this.sql.toLowerCase().startsWith('exec sys.sp_helpindex @objname');
|
||
|
|
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
isShowIndexesQuery() {
|
||
|
|
let result = false;
|
||
|
|
|
||
|
|
result = result || this.sql.toLowerCase().startsWith('exec sys.sp_helpindex @objname');
|
||
|
|
result = result || this.sql.startsWith('SELECT NAME AS "name", TBNAME AS "tableName", UNIQUERULE AS "keyType", COLNAMES, INDEXTYPE AS "type" FROM SYSIBM.SYSINDEXES');
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
handleShowIndexesQuery(data) {
|
||
|
|
let currItem;
|
||
|
|
const result = [];
|
||
|
|
data.forEach(item => {
|
||
|
|
if (!currItem || currItem.name !== item.Key_name) {
|
||
|
|
currItem = {
|
||
|
|
primary: item.keyType === 'P',
|
||
|
|
fields: [],
|
||
|
|
name: item.name,
|
||
|
|
tableName: item.tableName,
|
||
|
|
unique: item.keyType === 'U',
|
||
|
|
type: item.type
|
||
|
|
};
|
||
|
|
|
||
|
|
_.forEach(item.COLNAMES.replace(/\+|-/g, x => { return ` ${ x}`; }).split(' '), column => {
|
||
|
|
let columnName = column.trim();
|
||
|
|
if ( columnName ) {
|
||
|
|
columnName = columnName.replace(/\+|-/, '');
|
||
|
|
currItem.fields.push({
|
||
|
|
attribute: columnName,
|
||
|
|
length: undefined,
|
||
|
|
order: column.indexOf('-') === -1 ? 'ASC' : 'DESC',
|
||
|
|
collate: undefined
|
||
|
|
});
|
||
|
|
}
|
||
|
|
});
|
||
|
|
result.push(currItem);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
handleInsertQuery(results, metaData) {
|
||
|
|
if (this.instance) {
|
||
|
|
// add the inserted row id to the instance
|
||
|
|
const autoIncrementAttribute = this.model.autoIncrementAttribute;
|
||
|
|
let id = null;
|
||
|
|
let autoIncrementAttributeAlias = null;
|
||
|
|
|
||
|
|
if (Object.prototype.hasOwnProperty.call(this.model.rawAttributes, autoIncrementAttribute) &&
|
||
|
|
this.model.rawAttributes[autoIncrementAttribute].field !== undefined)
|
||
|
|
autoIncrementAttributeAlias = this.model.rawAttributes[autoIncrementAttribute].field;
|
||
|
|
id = id || results && results[0][this.getInsertIdField()];
|
||
|
|
id = id || metaData && metaData[this.getInsertIdField()];
|
||
|
|
id = id || results && results[0][autoIncrementAttribute];
|
||
|
|
id = id || autoIncrementAttributeAlias && results && results[0][autoIncrementAttributeAlias];
|
||
|
|
this.instance[autoIncrementAttribute] = id;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = Query;
|
||
|
|
module.exports.Query = Query;
|
||
|
|
module.exports.default = Query;
|