waterline-postgresql
Version:
PostgreSQL Adapter for Sails and Waterline
39 lines (32 loc) • 1.35 kB
JavaScript
var helpers = require('../../helpers');
function generateCombinedName(postfix, name, subNames) {
var crypto = require('crypto');
var limit = 30;
if (!Array.isArray(subNames)) subNames = subNames ? [subNames] : [];
var table = name.replace(/\.|-/g, '_');
var subNamesPart = subNames.join('_');
var result = (table + '_' + (subNamesPart.length ? subNamesPart + '_': '') + postfix).toLowerCase();
if (result.length > limit) {
helpers.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 + ']';
}
module.exports = {
generateCombinedName: generateCombinedName,
wrapSqlWithCatch: wrapSqlWithCatch,
ReturningHelper: ReturningHelper
};