npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

@eggjs/tegg-dal-plugin

v3.43.2

Published

dal plugin for egg

Downloads

586

Readme

@eggjs/tegg-dal-plugin

@eggjs/tegg-dal-plugin 支持使用注解的方式来开发 egg 中的 dal。

egg 模式

Install

# tegg 注解
npm i --save @eggjs/tegg
# tegg 插件
npm i --save @eggjs/tegg-plugin
# tegg dal 插件
npm i --save @eggjs/tegg-dal-plugin

Prepare

// tsconfig.json
{
  "extends": "@eggjs/tsconfig"
}

Config

// config/plugin.js
exports.tegg = {
  package: '@eggjs/tegg-plugin',
  enable: true,
};

exports.teggDal = {
  package: '@eggjs/tegg-dal-plugin',
  enable: true,
};

standalone 模式

Install

# tegg 注解
npm i --save @eggjs/tegg
# tegg dal 插件
npm i --save @eggjs/tegg-dal-plugin

Prepare

// tsconfig.json
{
  "extends": "@eggjs/tsconfig"
}

Usage

module.yml

通过 module.yml 来配置 module 中的 mysql 数据源。

dataSource:
  # 数据源名称,可以在 @Table 注解中指定
  # 如果 module 中只有一个 dataSource,@Table 会默认使用这个数据源
  foo:
    connectionLimit: 100
    database: 'test'
    host: '127.0.0.1'
    user: root
    port: 3306

Table

TableModel 定义一个表结构,包括表配置、列、索引。

import { Table, Index, Column, ColumnType, IndexType } from '@eggjs/tegg/dal';

// 定义了一个表
@Table({
  comment: 'foo table',
})
// 定义了一个唯一索引,列是 name
@Index({
  keys: [ 'name' ],
  type: IndexType.UNIQUE,
})
export class Foo {
  // 定义了主键,类型是 int
  @Column({
    type: ColumnType.INT,
  }, {
    primaryKey: true,
  })
  id: number;

  // 定义了 name 列,类型是 varchar
  @Column({
    type: ColumnType.VARCHAR,
    length: 100,
  })
  name: string;
}

详细参数定义如下,具体参数值可以参考 https://dev.mysql.com/doc/refman/8.0/en/create-table.html

建表参数,使用方式为 @Table(parmas?: TableParams)

export interface TableParams {
  // 数据库表名
  name?: string;
  // 数据源名称,如果 module 只有一个 dataSource 则默认使用这个
  dataSourceName?: string;
  comment?: string;
  autoExtendSize?: number;
  autoIncrement?: number;
  avgRowLength?: number;
  characterSet?: string;
  collate?: string;
  compression?: CompressionType;
  encryption?: boolean;
  engine?: string;
  engineAttribute?: string;
  insertMethod?: InsertMethod;
  keyBlockSize?: number;
  maxRows?: number;
  minRows?: number;
  rowFormat?: RowFormat;
  secondaryEngineAttribute?: string;
}

建索引参数,使用方式为 @Index(parmas?: IndexParams)

export interface IndexParams {
  // 索引的列
  keys: string[];
  // 索引名称,如果未指定会用 列名拼接
  // 如 [column1, column2 ]
  // 普通索引为 idx_column1_column2
  // 唯一索引为 uk_column1_column2
  name?: string;
  type?: IndexType,
  storeType?: IndexStoreType;
  comment?: string;
  engineAttribute?: string;
  secondaryEngineAttribute?: string;
  parser?: string;
}

建列参数,使用方式为 @Column(type: ColumnTypeParams, parmas?: ColumnParams)

export interface ColumnParams {
  // 列名,默认转换规则 userName 至 user_name
  name?: string;
  // 默认值
  default?: string;
  // 是否可控,默认为 false
  canNull?: boolean;
  comment?: string;
  visible?: boolean;
  autoIncrement?: boolean;
  uniqueKey?: boolean;
  primaryKey?: boolean;
  collate?: string;
  columnFormat?: ColumnFormat;
  engineAttribute?: string;
  secondaryEngineAttribute?: string;
}

支持的类型

export enum ColumnType {
  // Numeric
  BIT = 'BIT',
  TINYINT = 'TINYINT',
  BOOL = 'BOOL',
  SMALLINT = 'SMALLINT',
  MEDIUMINT = 'MEDIUMINT',
  INT = 'INT',
  BIGINT = 'BIGINT',
  DECIMAL = 'DECIMAL',
  FLOAT = 'FLOAT',
  DOUBLE = 'DOUBLE',
  // Date
  DATE = 'DATE',
  DATETIME = 'DATETIME',
  TIMESTAMP = 'TIMESTAMP',
  TIME = 'TIME',
  YEAR = 'YEAR',
  // String
  CHAR = 'CHAR',
  VARCHAR = 'VARCHAR',
  BINARY = 'BINARY',
  VARBINARY = 'VARBINARY',
  TINYBLOB = 'TINYBLOB',
  TINYTEXT = 'TINYTEXT',
  BLOB = 'BLOB',
  TEXT = 'TEXT',
  MEDIUMBLOB = 'MEDIUMBLOB',
  MEDIUMTEXT = 'MEDIUMTEXT',
  LONGBLOB = 'LONGBLOB',
  LONGTEXT = 'LONGTEXT',
  ENUM = 'ENUM',
  SET = 'SET',
  // JSON
  JSON = 'JSON',
  // Spatial
  GEOMETRY = 'GEOMETRY',
  POINT = 'POINT',
  LINESTRING = 'LINESTRING',
  POLYGON = 'POLYGON',
  MULTIPOINT = 'MULTIPOINT',
  MULTILINESTRING = 'MULTILINESTRING',
  MULTIPOLYGON = 'MULTIPOLYGON',
  GEOMETRYCOLLECTION = 'GEOMETRYCOLLECTION',
}

支持的类型参数,详细可参考 https://dev.mysql.com/doc/refman/8.0/en/data-types.html

如果 mysql 类型和 ts 类型对应关系不确定可直接使用 ColumnTsType 类型,如

import { Table, Index, Column, ColumnType, IndexType, ColumnTsType } from '@eggjs/tegg/dal';

// 定义了一个表
@Table({
  comment: 'foo table',
})
// 定义了一个唯一索引,列是 name
@Index({
  keys: [ 'name' ],
  type: IndexType.UNIQUE,
})
export class Foo {
  // 定义了主键,类型是 int
  @Column({
    type: ColumnType.INT,
  }, {
    primaryKey: true,
  })
  id: ColumnTsType['INT'];

  // 定义了 name 列,类型是 varchar
  @Column({
    type: ColumnType.VARCHAR,
    length: 100,
  })
  name: ColumnTsType['VARCHAR'];
}
// Bit 类型,对应 js 中的 Buffer 
export interface BitParams {
  type: ColumnType.BIT,
  // Bit 长度
  length?: number;
}

// Bool 类型,注意在 js 中需要使用 0 或者 1
export interface BoolParams {
  type: ColumnType.BOOL,
}

// TinyInt 类型,对应 js 中的 number
export interface TinyIntParams {
  type: ColumnType.TINYINT;
  length?: number;
  unsigned?: boolean;
  zeroFill?: boolean;
}

// SmallInt 类型,对应 js 中的 number
export interface SmallIntParams {
  type: ColumnType.SMALLINT;
  length?: number;
  unsigned?: boolean;
  zeroFill?: boolean;
}

// MediumInt 类型,对应 js 中的 number
export interface MediumIntParams {
  type: ColumnType.MEDIUMINT;
  length?: number;
  unsigned?: boolean;
  zeroFill?: boolean;
}

// MediumInt 类型,对应 js 中的 number
export interface IntParams {
  type: ColumnType.INT;
  length?: number;
  unsigned?: boolean;
  zeroFill?: boolean;
}

// BigInt 类型,对应 js 中的 string
export interface BigIntParams {
  type: ColumnType.BIGINT;
  length?: number;
  unsigned?: boolean;
  zeroFill?: boolean;
}

// Decimal 类型,对应 js 中的 string
export interface DecimalParams {
  type: ColumnType.DECIMAL;
  length?: number;
  fractionalLength?: number;
  unsigned?: boolean;
  zeroFill?: boolean;
}

// Float 类型,对应 js 中的 number
export interface FloatParams {
  type: ColumnType.FLOAT;
  length?: number;
  fractionalLength?: number;
  unsigned?: boolean;
  zeroFill?: boolean;
}

// Double 类型,对应 js 中的 number
export interface DoubleParams {
  type: ColumnType.DOUBLE;
  length?: number;
  fractionalLength?: number;
  unsigned?: boolean;
  zeroFill?: boolean;
}

// Date 类型,对应 js 中的 Date
export interface DateParams {
  type: ColumnType.DATE;
}

// DateTime 类型,对应 js 中的 Date
export interface DateTimeParams {
  type: ColumnType.DATETIME;
  precision?: number;
  // 自动添加 ON UPDATE CURRENT_TIMESTAMP
  // 如果有精度则为 ON UPDATE CURRENT_TIMESTAMP(precision)
  autoUpdate?: boolean;
}

// Timestamp 类型,对应 js 中的 Date
export interface TimestampParams {
  type: ColumnType.TIMESTAMP;
  precision?: number;
  // 自动添加 ON UPDATE CURRENT_TIMESTAMP
  // 如果有精度则为 ON UPDATE CURRENT_TIMESTAMP(precision)
  autoUpdate?: boolean;
}

// Times 类型,对应 js 中的 string
export interface TimeParams {
  type: ColumnType.TIME;
  precision?: number;
}

// Year 类型,对应 js 中的 number
export interface YearParams {
  type: ColumnType.YEAR;
}

// Char 类型,对应 js 中的 string
export interface CharParams {
  type: ColumnType.CHAR;
  length?: number;
  characterSet?: string;
  collate?: string;
}

// VarChar 类型,对应 js 中的 string
export interface VarCharParams {
  type: ColumnType.VARCHAR;
  length: number;
  characterSet?: string;
  collate?: string;
}

// Binary 类型,对应 js 中的 Buffer
export interface BinaryParams {
  type: ColumnType.BINARY;
  length?: number;
}

// VarBinary 类型,对应 js 中的 Buffer
export interface VarBinaryParams {
  type: ColumnType.VARBINARY;
  length: number;
}

// TinyBlob 类型,对应 js 中的 Buffer
export interface TinyBlobParams {
  type: ColumnType.TINYBLOB;
}

// TinyText 类型,对应 js 中的 string
export interface TinyTextParams {
  type: ColumnType.TINYTEXT;
  characterSet?: string;
  collate?: string;
}

// Blob 类型,对应 js 中的 Buffer
export interface BlobParams {
  type: ColumnType.BLOB;
  length?: number;
}

// Text 类型,对应 js 中的 string
export interface TextParams {
  type: ColumnType.TEXT;
  length?: number;
  characterSet?: string;
  collate?: string;
}

// MediumBlob 类型,对应 js 中的 Buffer
export interface MediumBlobParams {
  type: ColumnType.MEDIUMBLOB;
}

// LongBlob 类型,对应 js 中的 Buffer
export interface LongBlobParams {
  type: ColumnType.LONGBLOB;
}

// MediumText 类型,对应 js 中的 string
export interface MediumTextParams {
  type: ColumnType.MEDIUMTEXT;
  characterSet?: string;
  collate?: string;
}

// LongText 类型,对应 js 中的 string
export interface LongTextParams {
  type: ColumnType.LONGTEXT;
  characterSet?: string;
  collate?: string;
}

// Enum 类型,对应 js 中的 string
export interface EnumParams {
  type: ColumnType.ENUM;
  enums: string[];
  characterSet?: string;
  collate?: string;
}

// Set 类型,对应 js 中的 string
export interface SetParams {
  type: ColumnType.SET;
  enums: string[];
  characterSet?: string;
  collate?: string;
}

// Json 类型,对应 js 中的 Object
export interface JsonParams {
  type: ColumnType.JSON;
}

// Gemotry 类型,对应 Point, Line, Polygon
export interface GeometryParams {
  type: ColumnType.GEOMETRY;
  SRID?: number;
}

export interface PointParams {
  type: ColumnType.POINT;
  SRID?: number;
}

export interface LinestringParams {
  type: ColumnType.LINESTRING;
  SRID?: number;
}

export interface PolygonParams {
  type: ColumnType.POLYGON;
  SRID?: number;
}

export interface MultiPointParams {
  type: ColumnType.MULTIPOINT;
  SRID?: number;
}

export interface MultiLinestringParams {
  type: ColumnType.MULTILINESTRING;
  SRID?: number;
}

export interface MultiPolygonParams {
  type: ColumnType.MULTIPOLYGON;
  SRID?: number;
}

// GeometryCollection 对应 Array<Point | Line | Ploygon>
export interface GeometryCollectionParams {
  type: ColumnType.GEOMETRYCOLLECTION;
  SRID?: number;
}

目录结构

运行 egg-bin dal gen 即可生成 dal 相关目录,包括 dao、extension、structure

dal
├── dao
│ ├── FooDAO.ts
│ └── base
│     └── BaseFooDAO.ts
├── extension
│ └── FooExtension.ts
└── structure
    ├── Foo.json
    └── Foo.sql
  • dao: 表访问类,生成的 BaseDAO 请勿修改,其中包含了根据表结构生成的基础访问方法,如 insert/update/delete 以及根据索引信息生成的 find 方法
  • extension: 扩展文件,如果需要自定义 sql,需要在 extension 文件中定义
  • structure: 建表语句以及表结构

DAO

注入 DAO 即可实现对表的访问

import { SingletonProto, Inject } from '@eggjs/tegg';

@SingletonProto()
export class FooRepository {
  @Inject()
  private readonly fooDAO: FooDAO;
  
  async create(foo: Foo) {
    await this.fooDAO.insert(foo);
  }
}

自定义 SQL

  1. 在 extension 中定义自定义 SQL
// dal/extension/FooExtension.ts
import { SqlMap, SqlType } from '@eggjs/tegg/dal';

export default {
  findByName: {
    type: SqlType.SELECT,
    sql: 'SELECT {{ allColumns }} FROM egg_foo WHERE name = {{ name }}',
  },
} as Record<string, SqlMap>;
  1. 在 dao 中定义自定义方法
import { SingletonProto, AccessLevel } from '@eggjs/tegg';
import { BaseFooDAO } from './base/BaseFooDAO';
import { Foo } from '../../Foo';

@SingletonProto({
  accessLevel: AccessLevel.PUBLIC,
})
export default class FooDAO extends BaseFooDAO {
  async findByName(name: string): Promise<Foo[]> {
    return this.dataSource.execute('findByName', {
      name,
    });
  }
}

支持的自定义 filter

- toPoint
- toLine
- toPolygon
- toGeometry
- toMultiPoint
- toMultiLine
- toMultiPolygon
- toGeometryCollection

支持自定义 block 来简化 sql, 如内置的 allColumns

export default {
  findByName: {
    type: SqlType.BLOCK,
    sql: 'id, name',
  },
} as Record<string, SqlMap>;

DataSource

DataSource 仅能在 DAO 中使用,可以将 MySQL 返回的数据反序列化为类。支持的方法有

export interface DataSource<T> {
  // 将返回的行都转换为 T
  execute(sqlName: string, data?: any): Promise<Array<T>>;
  // 将返回的行都转换为 T, 仅返回第一条
  executeScalar(sqlName: string, data?: any): Promise<T | null>;
  // 直接返回 mysql 数据
  executeRaw(sqlName: string, data?: any): Promise<Array<any>>;
  // 直接返回 mysql 数据, 仅返回第一条
  executeRawScalar(sqlName: string, data?: any): Promise<any | null>;
  // 返回分页数据
  paginate(sqlName: string, data: any, currentPage: number, perPageCount: number): Promise<any>;
  // 返回行数
  count(sqlName: string, data?: any): Promise<number>;
}

时区问题

注意连接配置中的时区必须和数据库的时区完全一致,否则可能出现时间错误的问题。

dataSource:
  foo:
    connectionLimit: 100
    database: 'test'
    host: '127.0.0.1'
    user: root
    port: 3306
    timezone: '+08:00'

可以通过以下 SQL 来查看数据库时区

SELECT @@GLOBAL.time_zone;

Unittest

可以在 module.yml 中开启 forkDb 配置,即可实现 unittest 环境自动创建数据库

# module.yml
dataSource:
  foo:
    # 开启 ci 环境自动创建数据库
    forkDb: true