@sap/cds-mtxs/srv/dberrors.js

SAP Cloud Application Programming Model - Multitenancy library

const cds = require('@sap/cds/lib')

class ErrorCodes {
  static TABLE_NOT_FOUND = 'TABLE_NOT_FOUND'
  static COLUMN_NOT_FOUND = 'COLUMN_NOT_FOUND'
  get TABLE_NOT_FOUND() { return this.constructor.TABLE_NOT_FOUND }
  get COLUMN_NOT_FOUND() { return this.constructor.COLUMN_NOT_FOUND }
}

class SqliteErrorCodes extends ErrorCodes {

  SQLITE_ERRORS = [
    { message: 'no such table', code: this.TABLE_NOT_FOUND },
    { message: 'no such column', code: this.COLUMN_NOT_FOUND }
  ]

  static getInstance() {
    if (((cds.requires.db?.kind in { 'sqlite':1, 'better-sqlite':2 }) && 'SQLite database')) return new SqliteErrorCodes()
  }

  getErrorCode(err) {
    return this.SQLITE_ERRORS.find(({ message }) => err.message.includes(message))?.code
  }
}

class HanaErrorCodes extends ErrorCodes {

  // see https://help.sap.com/docs/SAP_HANA_PLATFORM/bed8c14f9f024763b0777aa72b5436f6/f789706cd2ca49b6b65655da5a8f739c.html
  HANA_ERRORS = {
    259: this.TABLE_NOT_FOUND,
    260: this.COLUMN_NOT_FOUND
  }

  static getInstance() {
    if (cds.requires.db?.kind === 'hana') return new HanaErrorCodes()
  }

  getErrorCode(err) {
    if (this.HANA_ERRORS[err.code]) {
      return this.HANA_ERRORS[err.code]
    }
  }
}

module.exports = SqliteErrorCodes.getInstance() ?? HanaErrorCodes.getInstance()