
Product
Introducing Repository Access Permissions and Custom Roles
Socket now supports Custom Roles and Repository Access Permissions so organizations can control who can access specific repositories and actions.
@eggjs/dal-plugin
Advanced tools
@eggjs/tegg-dal-plugin 支持使用注解的方式来开发 egg 中的 dal。
# 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
// tsconfig.json
{
"extends": "@eggjs/tsconfig"
}
// config/plugin.js
exports.tegg = {
package: '@eggjs/tegg-plugin',
enable: true,
};
exports.teggDal = {
package: '@eggjs/tegg-dal-plugin',
enable: true,
};
# tegg 注解
npm i --save @eggjs/tegg
# tegg dal 插件
npm i --save @eggjs/tegg-dal-plugin
// tsconfig.json
{
"extends": "@eggjs/tsconfig"
}
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
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;
}
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
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);
}
}
// dal/extension/FooExtension.ts
import { type 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>;
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 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>;
}
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;
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
FAQs
dal plugin for egg
We found that @eggjs/dal-plugin demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 8 open source maintainers collaborating on the project.
Did you know?

Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.

Product
Socket now supports Custom Roles and Repository Access Permissions so organizations can control who can access specific repositories and actions.

Product
Socket MCP now lets AI assistants review org alerts, investigate threats using the Socket threat feed, and inspect package files in addition to dependency scoring.

Product
Socket Firewall blocks malicious VS Code and Open VSX extensions before install, protecting developers from compromised editor marketplaces.