knex/lib/dialects/oracle/utils.js

A batteries-included SQL query & schema builder for Postgres, MySQL and SQLite3 and the Browser

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.generateCombinedName = generateCombinedName;
exports.wrapSqlWithCatch = wrapSqlWithCatch;
exports.ReturningHelper = ReturningHelper;

function generateCombinedName(logger, postfix, name, subNames) {
  const crypto = require('crypto');

  const limit = 30;
  if (!Array.isArray(subNames)) subNames = subNames ? [subNames] : [];
  const table = name.replace(/\.|-/g, '_');
  const subNamesPart = subNames.join('_');
  let result = `${table}_${subNamesPart.length ? subNamesPart + '_' : ''}${postfix}`.toLowerCase();

  if (result.length > limit) {
    logger.warn(`Automatically generated name "${result}" exceeds ${limit} character ` + `limit for Oracle. Using base64 encoded sha1 of that name instead.`); // generates the sha1 of the name and encode it with base64

    result = crypto.createHash('sha1').update(result).digest('base64').replace('=', '');
  }

  return result;
}

function wrapSqlWithCatch(sql, errorNumberToCatch) {
  return `begin execute immediate '${sql.replace(/'/g, "''")}'; ` + `exception when others then if sqlcode != ${errorNumberToCatch} then raise; ` + `end if; ` + `end;`;
}

function ReturningHelper(columnName) {
  this.columnName = columnName;
}

ReturningHelper.prototype.toString = function () {
  return `[object ReturningHelper:${this.columnName}]`;
};