typeorm
Version:
Data-Mapper ORM for TypeScript and ES2021+. Supports MySQL/MariaDB, PostgreSQL, MS SQL Server, Oracle, SAP HANA, SQLite, MongoDB databases.
29 lines (27 loc) • 1.09 kB
JavaScript
/**
* Helper utility functions for QueryBuilder.
*/
export class QueryBuilderUtils {
/**
* Checks if given value is a string representation of alias property,
* e.g. "post.category" or "post.id".
*/
static isAliasProperty(str) {
// alias property must be a string and must have a dot separator
if (typeof str !== "string" || str.indexOf(".") === -1)
return false;
// extra alias and its property relation
const [aliasName, propertyName] = str.split("."); // todo: what about relations in embedded?
if (!aliasName || !propertyName)
return false;
// alias and property must be represented in a special format
// const aliasNameRegexp = /^[a-zA-Z0-9_-]+$/;
// if (!aliasNameRegexp.test(aliasName) || !aliasNameRegexp.test(propertyName))
// return false;
// make sure string is not a subquery
if (str.indexOf("(") !== -1 || str.indexOf(")") !== -1)
return false;
return true;
}
}
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