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ModelQuery: fix field disambiguation

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This commit is contained in:
Alice Gaudon 2020-09-05 15:33:51 +02:00
parent 9e38b003f9
commit e403dfa863
8 changed files with 63 additions and 25 deletions
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2
package.json
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@ -1,6 +1,6 @@
{
"name": "wms-core",
"version": "0.21.13-rc.1",
"version": "0.21.13-rc.2",
"description": "Node web application framework and toolbelt.",
"repository": "https://gitlab.com/ArisuOngaku/wms-core",
"author": "Alice Gaudon <alice@gaudon.pro>",

4
src/db/Model.ts
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@ -5,7 +5,7 @@ import ModelComponent from "./ModelComponent";
import {Type} from "../Utils";
import ModelFactory from "./ModelFactory";
import ModelRelation from "./ModelRelation";
import ModelQuery, {ModelQueryResult} from "./ModelQuery";
import ModelQuery, {ModelQueryResult, SelectFields, SelectFieldValue} from "./ModelQuery";
import {Request} from "express";
export default abstract class Model {
@ -193,7 +193,7 @@ export default abstract class Model {
public async exists(): Promise<boolean> {
if (this._cached_exists === undefined) {
const query = this._factory.select('1');
const query = this._factory.select('');
for (const indexField of this._factory.getPrimaryKeyFields()) {
query.where(indexField, this[indexField]);
}

4
src/db/ModelFactory.ts
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@ -1,6 +1,6 @@
import ModelComponent from "./ModelComponent";
import Model from "./Model";
import ModelQuery, {ModelQueryResult} from "./ModelQuery";
import ModelQuery, {ModelQueryResult, SelectFields} from "./ModelQuery";
import {Request} from "express";
import {Type} from "../Utils";
@ -43,7 +43,7 @@ export default class ModelFactory<T extends Model> {
return this.modelType.table;
}
public select(...fields: string[]): ModelQuery<T> {
public select(...fields: SelectFields): ModelQuery<T> {
return ModelQuery.select(this, ...fields);
}

38
src/db/ModelQuery.ts
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@ -7,7 +7,8 @@ import ModelFactory from "./ModelFactory";
export default class ModelQuery<M extends Model> implements WhereFieldConsumer<M> {
public static select<M extends Model>(factory: ModelFactory<M>, ...fields: string[]): ModelQuery<M> {
public static select<M extends Model>(factory: ModelFactory<M>, ...fields: SelectFields): ModelQuery<M> {
fields = fields.map(v => v === '' ? new SelectFieldValue('none', 1, true) : v);
return new ModelQuery(QueryType.SELECT, factory, fields.length > 0 ? fields : ['*']);
}
@ -30,8 +31,9 @@ export default class ModelQuery<M extends Model> implements WhereFieldConsumer<M
private readonly type: QueryType;
private readonly factory: ModelFactory<M>;
private readonly table: string;
private fields: (string | SelectFieldValue | UpdateFieldValue)[];
private readonly fields: SelectFields;
private _leftJoin?: string;
private _leftJoinAlias?: string;
private _leftJoinOn: WhereFieldValue[] = [];
private _where: (WhereFieldValue | WhereFieldValueGroup)[] = [];
private _limit?: number;
@ -42,15 +44,16 @@ export default class ModelQuery<M extends Model> implements WhereFieldConsumer<M
private _pivot?: string[];
private _recursiveRelation?: RelationDatabaseProperties;
private constructor(type: QueryType, factory: ModelFactory<M>, fields?: (string | SelectFieldValue | UpdateFieldValue)[]) {
private constructor(type: QueryType, factory: ModelFactory<M>, fields?: SelectFields) {
this.type = type;
this.factory = factory;
this.table = factory.table;
this.fields = fields || [];
}
public leftJoin(table: string): this {
public leftJoin(table: string, alias?: string): this {
this._leftJoin = table;
this._leftJoinAlias = alias;
return this;
}
@ -119,19 +122,26 @@ export default class ModelQuery<M extends Model> implements WhereFieldConsumer<M
public toString(final: boolean = false): string {
let query = '';
// Prevent wildcard and fields from conflicting
if (this._leftJoin) {
this.fields = this.fields
.map(f => !f.toString().startsWith('(') && f.toString().split('.').length === 1 ? `\`${this.table}\`.${f}` : f);
}
if (this._pivot) this.fields.push(...this._pivot);
let fields = this.fields.join(',');
// Prevent wildcard and fields from conflicting
let fieldArray = this.fields.map(f => {
let field = f.toString();
if (field.startsWith('(')) return f; // Skip sub-queries
let parts = field.split('.');
if (parts.length === 1) parts = [this.table, field]; // Add table disambiguation
return parts.map(v => v.startsWith('`') || v === '*' ? v : `\`${v}\``).join('.');
});
let fields = fieldArray.join(',');
let join = '';
if (this._leftJoin) {
join = `LEFT JOIN \`${this._leftJoin}\` ON ${this._leftJoinOn[0]}`;
const alias = this._leftJoinAlias ? ` AS \`${this._leftJoinAlias}\`` : '';
join = `LEFT JOIN \`${this._leftJoin}\`${alias} ON ${this._leftJoinOn[0]}`;
for (let i = 1; i < this._leftJoinOn.length; i++) {
join += this._leftJoinOn[i].toString(false);
}
@ -343,7 +353,7 @@ class FieldValue {
}
}
class SelectFieldValue extends FieldValue {
export class SelectFieldValue extends FieldValue {
public toString(first: boolean = true): string {
return `(${this.value instanceof ModelQuery ? this.value : (this.raw ? this.value : '?')}) AS \`${this.field}\``;
}
@ -404,3 +414,5 @@ interface WhereFieldConsumer<M extends Model> {
groupWhere(setter: (query: WhereFieldConsumer<M>) => void, operator?: WhereOperator): this;
}
export type SelectFields = (string | SelectFieldValue | UpdateFieldValue)[];

2
src/db/ModelRelation.ts
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@ -158,7 +158,7 @@ export class ManyThroughModelRelation<S extends Model, O extends Model> extends
super(model, foreignFactory, dbProperties);
this.dbProperties = dbProperties;
this.constraint(query => query
.leftJoin(`${this.dbProperties.pivotTable} as pivot`)
.leftJoin(this.dbProperties.pivotTable, 'pivot')
.on(`pivot.${this.dbProperties.foreignPivotKey}`, `${this.foreignFactory.table}.${this.dbProperties.foreignKey}`)
);
}

4
src/db/Validator.ts
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@ -193,7 +193,7 @@ export default class Validator<T> {
if (querySupplier) {
query = querySupplier().where(foreignKey, val);
} else {
query = (model instanceof Model ? <any>model.constructor : model).select('1').where(foreignKey, val);
query = (model instanceof Model ? <any>model.constructor : model).select('').where(foreignKey, val);
}
if (model instanceof Model && typeof model.id === 'number') query = query.where('id', model.id, WhereTest.NE);
return (await query.execute(c)).results.length === 0;
@ -206,7 +206,7 @@ export default class Validator<T> {
public exists(modelClass: Function, foreignKey?: string): Validator<T> {
this.addStep({
verifyStep: async (val, thingName, c) => (await (<any>modelClass).select('1').where(foreignKey !== undefined ? foreignKey : thingName, val).execute(c)).results.length >= 1,
verifyStep: async (val, thingName, c) => (await (<any>modelClass).select('').where(foreignKey !== undefined ? foreignKey : thingName, val).execute(c)).results.length >= 1,
throw: () => new UnknownRelationValidationError((<any>modelClass).table, foreignKey),
isFormat: false,
});

2
test/Model.test.ts
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@ -3,6 +3,7 @@ import Model from "../src/db/Model";
import {MIGRATIONS} from "./_migrations";
import ModelFactory from "../src/db/ModelFactory";
import {ValidationBag} from "../src/db/Validator";
import Logger from "../src/Logger";
class FakeDummyModel extends Model {
public id?: number = undefined;
@ -18,6 +19,7 @@ class FakeDummyModel extends Model {
let factory: ModelFactory<FakeDummyModel>;
beforeAll(async () => {
Logger.verbose();
MysqlConnectionManager.registerMigrations(MIGRATIONS);
ModelFactory.register(FakeDummyModel);
await MysqlConnectionManager.prepare();

32
test/ModelQuery.test.ts
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@ -1,8 +1,32 @@
import ModelQuery, {WhereOperator} from "../src/db/ModelQuery";
import ModelQuery, {SelectFieldValue, WhereOperator} from "../src/db/ModelQuery";
import ModelFactory from "../src/db/ModelFactory";
import Model from "../src/db/Model";
describe('Test ModelQuery', () => {
test('update', () => {
const query = ModelQuery.update({table: 'model'} as unknown as ModelFactory<Model>, {
'f1': 'v1',
'f2': 'v2',
'f3': 'v3',
}).where('f4', 'v4');
expect(query.toString(true)).toBe('UPDATE `model` SET `model`.`f1`=?,`model`.`f2`=?,`model`.`f3`=? WHERE `f4`=? ');
expect(query.variables).toStrictEqual(['v1','v2','v3','v4']);
});
test('function select', () => {
const query = ModelQuery.select({table: 'model'} as unknown as ModelFactory<Model>, 'f1', new SelectFieldValue('_count', 'COUNT(*)', true));
expect(query.toString(true)).toBe('SELECT `model`.`f1`,(COUNT(*)) AS `_count` FROM `model` ');
expect(query.variables).toStrictEqual([]);
});
test('pivot', () => {
const query = ModelQuery.select({table: 'model'} as unknown as ModelFactory<Model>, 'f1');
query.pivot('pivot.f2', 'f3');
expect(query.toString(true)).toBe('SELECT `model`.`f1`,`pivot`.`f2`,`model`.`f3` FROM `model` ');
expect(query.variables).toStrictEqual([]);
});
test('groupWhere generates proper query', () => {
const query = ModelQuery.select({table: 'model'} as unknown as ModelFactory<Model>, '*');
query.where('f1', 'v1');
@ -10,8 +34,8 @@ describe('Test ModelQuery', () => {
.groupWhere(q => q.where('f4', 'v4'), WhereOperator.OR))
.where('f5', 'v5');
expect(query.toString(true)).toBe('SELECT * FROM `model` WHERE `f1`=? AND (`f2`=? AND `f3`=? OR (`f4`=?)) AND `f5`=? ');
expect(query.variables.length).toBe(5);
expect(query.toString(true)).toBe('SELECT `model`.* FROM `model` WHERE `f1`=? AND (`f2`=? AND `f3`=? OR (`f4`=?)) AND `f5`=? ');
expect(query.variables).toStrictEqual(['v1','v2','v3','v4','v5']);
});
test('recursive queries', () => {
@ -22,6 +46,6 @@ describe('Test ModelQuery', () => {
query.sortBy('f2', 'ASC').limit(8);
expect(query.toString(true)).toBe("WITH RECURSIVE cte AS (SELECT `model`.* FROM `model` WHERE `f1`=? UNION SELECT o.* FROM `model` AS o, cte AS c WHERE o.`foreign`=c.`local`) SELECT * FROM cte LEFT JOIN `test` ON `model`.`j1`=`test`.`j2` ORDER BY `f2` ASC LIMIT 8");
expect(query.variables.length).toBe(1);
expect(query.variables).toStrictEqual(['v1']);
});
});