Introduce

websql-orm framework，support typescript angular cordova chrome sqlite database.

中文文档

Usage

websql-orm use TypeScript language, needs to be in before using tsconfig.json add a decorator configuration items to enable the decorator features.

{
    "compilerOptions": {
        "experimentalDecorators": true
    }
}

Installation

npm install websql-orm@latest

Tip: do not install a version prior to 2.1.0. The version prior to 2.1.0 is the debug version and cannot be used.

cordova plugin add cordova-sqlite-storage

Tip: In the cordova project, you need to install the cordova plugin.

import { EnvConfig } from 'websql-orm';

EnvConfig.useCordovaSqliteStorage = true;

Enable Debug log

import { EnvConfig } from 'websql-orm';

EnvConfig.enableDebugLog = true;

Other Config

import { EnvConfig } from 'websql-orm';
// 时间移除毫秒
EnvConfig.dateFormatRemoveMillisecond = true;

Define table

How do I define a table using an entity class?

import { database, column, ColumnType, Table } from 'websql-orm';

@database("student_db","student")
export class student extends Table {
    @column(ColumnType.STRING | ColumnType.PRIMARY)
    id: string;
    @column(ColumnType.STRING)
    user_name: string;
}

1. Decorator @database definition student table, the name of the class student is the name of the table, student_db is the database name.
2. Decorator @column definition column, ColumnType.STRING define text type.
3. Each table must have a PRIMARY key field, ColumnType.PRIMARY define the PRIMARY key field.
4. Each entity class must inherit Table.

Decorator description

| Decorator name | Description | Sample | | -------------- | ----------------------------- | --------------------------------- | | @database | Define table | @database("db_name","table_name") | | @column | Define column | @column(ColumnType.STRING) | | @reference | Define foreign key references | @reference('class_info','id') |

Define foreign key reference see advanced section

Field type enumeration

Table field enumeration values are consistent with TypeScript primitive types.

| Field type enumeration | Description | | ---------------------- | ----------- | | ColumnType.PRIMARY | Primary key | | ColumnType.STRING | ColumnType.PRIMARY | Primary key (string) | | ColumnType.NUMBER | ColumnType.PRIMARY | integer PRIMARY KEY autoincrement | | ColumnType.BOOLEAN | boolean | | ColumnType.NUMBER | number | | ColumnType.STRING | string | | ColumnType.ARRAY | Array | | ColumnType.DATE | Date | | ColumnType.ANY | any |

How to use

Take the student table defined above as an example

websql-orm Methods list

sqlite.fromSql Query the table record and return a list of records

var list = await sqlite.fromSql(new student(),
            'select * from student where user_name=? and id=? ',
            ['Tom','guid']);

sqlite.fromSqlFirst Query the first table record and return the first record

var info = await sqlite.fromSqlFirst(new student(),
            'select * from student where user_name=? ',
            ['Tom']);

sqlite.exist Querying for the existence of a record returns true or false

var result = await sqlite.exist(new student(),'b4ce6b51-0bd6-46ee-a5c7-d1d5a93bdee9');

sqlite.insert Inserts a record, returning the number of rows affected

var stu = new student();
stu.id = uid;
stu.user_name = 'Tom';
var result = await sqlite.insert(stu);

sqlite.update Modify the record to return the number of rows affected

var info = await sqlite.fromSqlFirst(new student(),
            'select * from student where user_name=? ',
            ['Tom']);
info.user_name = 'Sam';
var result = await info.save(); // var result = await sqlite.update(info)

sqlite.query Query records and return a list of records

var list = await sqlite.query(new student(),{ user_name:'Tom'});

sqlite.queryFirst Query the first record

var info = await sqlite.queryFirst(new student(),{ user_name:'Tom'});

sqlite.execSql Execute the SQL statement and return the number of affected rows

var result = await sqlite.execSql(new student(),
                'insert into (id,user_name) values (?,?)',
                ['b4ce6b51-0bd6-46ee-a5c7-d1d5a93bdee9','Tom']);

sqlite.delete Delete records

var delResult = await sqlite.delete(new student(),'291d853d-021b-4a66-9322-9d32eb27eb27');

sqlite.fromSqlByJs Query records (not tracking entities)

var data:any = await sqlite.fromSqlByJs(dbName,'select * from student where user_name=? ',['Tom']);

sqlite.fromSqlFirstByJs Query the first record (not track entity)

var data:any = await sqlite.fromSqlFirstByJs(dbName,'select * from student where user_name=? ',['Tom']);

Use websql-orm in javascript

示例

Javascript, with no decorator, currently provides only three methods.

var sqliteJs= new SqliteJs('db_name');

sqliteJs.fromSql("select * from hero where id = ?", [id]).then(function(result){
    console.log(result);
});

sqliteJs.fromSqlFirst("select * from hero where id = ?", [id]).then(function(result){
    console.log('successful');
});

sqliteJs.execSql("insert into hero (id,name) values (?,?)", [id,name]).then(function(result){
    if (result>0){
        console.log('successful');
    }
});

Advanced

Define the reference

How do I define a foreign key reference?

@database('hero_db','hero')
export class hero extends Table {

    @column(ColumnType.STRING | ColumnType.PRIMARY) id: string;

    @column(ColumnType.STRING) full_name: string;

    /* ... Omit other field definitions ... */

    @reference('id', new skill(), 'hero_id') skills: Array<skill>;
}

The sample

Entities defined

@database('hero_db','hero')
export class hero extends Table {

    @column(ColumnType.STRING | ColumnType.PRIMARY) id: string;

    @column(ColumnType.STRING) full_name: string;

    @column(ColumnType.NUMBER) age: number;

    @column(ColumnType.BOOLEAN) is_girl: boolean;

    @column(ColumnType.DATE) join_time: Date;

    @column(ColumnType.ANY) body_data: { stature: number, blood_type: BloodTypeEnum };

    @reference('id', new skill(), 'hero_id') skills: Array<skill>;

}

@database('hero_db','skill')
export class skill extends Table {

    @column(ColumnType.STRING | ColumnType.PRIMARY) id: string;

    @column(ColumnType.STRING) name: string;

    @column(ColumnType.STRING) descript: string;

    @column(ColumnType.NUMBER) harm: number;

    @column(ColumnType.STRING) hero_id:string;
}

export enum BloodTypeEnum {
    A = 1,
    B = 2,
    AB = 3,
    O = 4,
    OTHER = 5
}

The sample

import { skill } from './entities/skill';
import { hero } from './entities/hero';
import { sqlite } from "websql-orm";
import { BloodTypeEnum } from './entities/BloodTypeEnum';

export class Demo {
    private lvbu_id = "da93faef-bfff-49c6-92b9-8807ec196bab";
    private liubei_id = "ed609b25-166f-41de-9bbc-90eb8891b688";
    private guanyu_id = "7289f8cb-496c-4057-b054-3bb4a3af1d6c";
    constructor() {
        var that = this;
        setTimeout(async () => {
            await that.addHero();
            await that.queryHeros();
            await that.queryHero(this.lvbu_id);
            await that.updateHero(this.liubei_id);
            await that.deleteHero(this.guanyu_id);
        }, 0);
    }

    async addHero() {

        await this.deleteHeros();

        let lvbu = new hero();
        lvbu.id = this.lvbu_id;
        lvbu.age = 32;
        lvbu.full_name = "吕布";
        lvbu.is_girl = false;
        lvbu.join_time = new Date("2000/01/01");
        lvbu.body_data = { stature: 185, blood_type: BloodTypeEnum.A };

        let liubei = new hero();
        liubei.id = this.liubei_id;
        liubei.age = 31;
        liubei.full_name = "刘备";
        liubei.is_girl = false;
        liubei.join_time = new Date("2001/02/01");
        liubei.body_data = { stature: 178, blood_type: BloodTypeEnum.B };

        let guanyu = new hero();
        guanyu.id = this.guanyu_id;
        guanyu.age = 30;
        guanyu.full_name = "关羽";
        guanyu.is_girl = false;
        guanyu.join_time = new Date("2001/02/01");
        guanyu.body_data = { stature: 180, blood_type: BloodTypeEnum.AB };

        await sqlite.save(lvbu);
        await sqlite.save(liubei);
        await sqlite.save(guanyu);

        await this.addSkills();
    }


    async addSkills() {

        let lvbu_skill = new skill();
        lvbu_skill.id = this.uuid();
        lvbu_skill.name = "方天画斩";
        lvbu_skill.descript = "方天画斩是吕布第一伤害技能";
        lvbu_skill.harm = 76;
        lvbu_skill.hero_id = this.lvbu_id;

        let liubei_skill = new skill();
        liubei_skill.id = this.uuid();
        liubei_skill.name = "以德服人";
        liubei_skill.descript = "刘备清除身上的控制效果，并获得护盾，护盾存在期间刘备免疫控制";
        liubei_skill.harm = 50;
        liubei_skill.hero_id = this.liubei_id;

        let guanyu_skill = new skill();
        guanyu_skill.id = this.uuid();
        guanyu_skill.name = "青龙偃月";
        guanyu_skill.descript = "关羽这个英雄要持续不断的跑才能发挥本身的威力";
        guanyu_skill.harm = 70;
        guanyu_skill.hero_id = this.guanyu_id;

        let result = await sqlite.insert([lvbu_skill, liubei_skill, guanyu_skill]);
        if (result > 0) {
            console.log("添加技能成功");
        } else {
            console.log("添加技能失败")
        }


    }

    async deleteHero(id: string) {
        let delResult = await sqlite.delete(new hero(), id);
        if (!delResult) {
            console.warn(`删除英雄${id}失败`);
        } else {
            console.log(`删除英雄${id}成功`);
        }
    }

    async deleteHeros() {
        var success = true;
        var heros = await sqlite.fromSql(new hero(), "select * from hero", []);
        if (heros != null && heros.length > 0) {
            for (let index = 0; index < heros.length; index++) {
                const element = heros[index];
                let delResult = await sqlite.delete(new hero(), element.id);
                if (!delResult) {
                    success = false;
                }
            }
        }
        if (!success) {
            console.warn("删除所有英雄失败");
        } else {
            console.log("删除所有英雄成功");
        }

    }

    async updateHero(id) {
        var _hero = await sqlite.queryFirst(new hero(), { id: id });
        _hero.join_time = new Date();
        await _hero.save();
        console.log("修改英雄");
    }

    async queryHeros() {
        var heros = await sqlite.fromSql(new hero(), "select * from hero", []);
        console.log("查询所有英雄:");
        console.log(heros);
    }

    async queryHero(id: string) {
        var hero_ = await sqlite.fromSql(new hero(), "select * from hero where id = ?", [id]);
        console.log("查询英雄:");
        console.log(hero_);

        var _hero = await sqlite.query(new hero(), { id: id });
        console.log("查询英雄:");
        console.log(_hero);

        var __hero = await sqlite.queryFirst(new hero(), { id: id });
        console.log("查询英雄:");
        console.log(__hero);

        var ___hero = await sqlite.fromSqlFirst(new hero(), "select * from hero where id = ?", [id]);
        console.log("查询英雄:");
        console.log(___hero);
    }

    public uuid(): string {
        let s: any[] = [];
        let hexDigits = "0123456789abcdef";
        for (let i = 0; i < 36; i++) {
            s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1);
        }
        s[14] = "4";
        s[19] = hexDigits.substr((s[19] & 0x3) | 0x8, 1);
        s[8] = s[13] = s[18] = s[23] = "-";
        let uuid = s.join("");
        return uuid;
    }
}
new Demo();

License

Copyright (c) 2019, Sam Chen. (ISC License)