96 lines
1.6 KiB
JavaScript
96 lines
1.6 KiB
JavaScript
/**
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* @flow
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*/
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import Reference from './reference.js';
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import { objectToUniqueId } from './../../utils';
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// todo doc methods
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/**
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* @class Query
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*/
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export default class Query {
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modifiers: Array<DatabaseModifier>;
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constructor(ref: Reference, path: string, existingModifiers?: Array<DatabaseModifier>) {
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this.modifiers = existingModifiers ? [...existingModifiers] : [];
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this._reference = ref;
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}
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/**
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*
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* @param name
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* @param key
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* @return {Reference|*}
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*/
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orderBy(name: string, key?: string) {
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this.modifiers.push({
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type: 'orderBy',
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name,
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key,
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});
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return this._reference;
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}
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/**
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*
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* @param name
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* @param limit
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* @return {Reference|*}
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*/
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limit(name: string, limit: number) {
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this.modifiers.push({
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type: 'limit',
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name,
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limit,
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});
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return this._reference;
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}
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/**
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*
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* @param name
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* @param value
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* @param key
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* @return {Reference|*}
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*/
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filter(name: string, value: any, key?: string) {
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this.modifiers.push({
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type: 'filter',
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name,
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value,
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valueType: typeof value,
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key,
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});
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return this._reference;
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}
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/**
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*
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* @return {[*]}
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*/
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getModifiers(): Array<DatabaseModifier> {
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return [...this.modifiers];
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}
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/**
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*
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* @return {*}
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*/
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queryIdentifier() {
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// convert query modifiers array into an object for generating a unique key
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const object = {};
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for (let i = 0, len = this.modifiers.length; i < len; i++) {
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const { name, type, value } = this.modifiers[i];
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object[`${type}-${name}`] = value;
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}
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return objectToUniqueId(object);
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}
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}
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