import Parse from 'parse';

import { AsyncStorage } from 'react-native';

// 创建新的子类

var GameScore = Parse.Object.cextnd("GameScore")

// 创建该类的新实例

var gameScore = new GameScoere() 

// 位子类方法添加方法属性

var Monster = Parse.Object.extend("Monster", {

    hasSuperHumanStrength: function() {

        return this.get("strength") > 18;

    }

})

// 保存数据

gameScore.set("score", 1337);

gameScore.set('playerName', ' Sean Plott');

gameScore.set("cheatMode", false);

gameScore.save()

.then((gameScore) => {

    alert('new record')

}, err => {

    alert(err.message)

})

// 检索对象

var GameScoere = Parse.Object.extend("GameScore");

var query = new Parse.Query(GameScoere);

query.get("xWMyZ4YEGZ")

.then((gameScore) => {

}, err=> {

})

// 刷新云端数据，使用fetch

myObject.fetch().then((myObject)=>{

},err=>{

})

// 查询一个结果，使用first代替find

query.equalTo('playerEmail', "dast@example.com")

const object = await query.first()

// 跳过结果

query.skip(10)

// 对于数字和字符串可排序类型，可以控制返回结果顺序

query.ascending("score");

query.descending("score")

// 检索具有特定键值和没有特定键值的

query.exists("score");

query.doesNotExist("score");

// 匹配对象

const Team = Parse.Object.extend("Team");

const teamQuery = new Parse.Query(Team);

teamQuery.greaterThan("winPct", 0.5)

const userQuery = new Parse.Query(Parse.User);

userQuery.matchesKeyInQuery("hometown", "city", teamQuery);

const results = await userQuery.find()