@sqb/builder
Version:
Extensible multi-dialect SQL query builder written with TypeScript
54 lines (53 loc) • 1.96 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.FieldExpression = void 0;
const enums_js_1 = require("../enums.js");
const base_field_js_1 = require("./base-field.js");
const TABLE_COLUMN_PATTERN = /^((?:[a-zA-Z_][\w$_]*\.){0,2}) *([0-9a-zA-Z_][\w$_]*|\*) *(?:as)? *([a-zA-Z_][\w$_]*)?$/;
class FieldExpression extends base_field_js_1.BaseField {
constructor(arg0, arg1, arg2) {
super();
let expression;
if (typeof arg0 === 'object') {
expression = arg0.expression;
this._dataType = arg0.dataType;
this._isArray = arg0.isArray;
}
else {
expression = arg0;
this._dataType = arg1;
this._isArray = arg2;
}
const m = expression?.match(TABLE_COLUMN_PATTERN);
if (!m)
throw new TypeError(`"${expression}" does not match table column format`);
this._field = m[2];
if (m[1]) {
const a = m[1].split(/\./g);
a.pop();
this._table = a.pop();
this._schema = a.pop();
}
this._alias = this._field !== '*' ? m[3] : '';
}
get _type() {
return enums_js_1.SerializationType.FIELD_NAME;
}
_serialize(ctx) {
const o = {
schema: this._schema,
table: this._table,
field: this._field,
alias: this._alias,
isReservedWord: !!(this._field && ctx.isReservedWord(this._field)),
};
return ctx.serialize(this._type, o, () => {
const prefix = ctx.escapeReserved(this._schema ? this._schema + '.' : '') +
(this._table ? this._table + '.' : '');
return (prefix +
(!prefix && o.isReservedWord ? '"' + this._field + '"' : this._field) +
(this._alias ? ' as ' + this._alias : ''));
});
}
}
exports.FieldExpression = FieldExpression;