Deno Simple Orm

Build Status GitHub GitHub release (Deno)

dso is a simple ORM Library based on deno_mysql

Example

import {
  BaseModel,
  Defaults,
  dso,
  Field,
  FieldType,
  Join,
  Model,
  Where
} from "https://deno.land/x/dso@0.4.6/mod.ts";

// Define a database model
@Model("users")
class UserModel extends BaseModel<UserModel> {
  @Field({
    type: FieldType.INT,
    primary: true,
    length: 11,
    autoIncrement: true
  })
  id: number;

  @Field({ type: FieldType.STRING, length: 30 })
  name: string;

  @Field({ type: FieldType.STRING, length: 30 })
  password: string;
}

const userModel = new UserModel();
dso.define(userModel);

async function main() {
  // The database must be created before linking
  await dso.connect({
    hostname: "127.0.0.1",
    port: 3306,
    username: "root",
    passwod: "",
    db: "dbname"
  });

  // When installing or initializing a database,
  // you can use dso.sync to synchronize the database model to the database.

  // await dso.sync(false);

  // You can add records using insert method
  const insertId = await userModel.insert({
    name: "user1",
    password: "password"
  });

  // You can use the Model.findById method to get a record
  const user = await userModel.findById(1);
}
main();

Top Level API

dso.showQueryLog

Set whether query debugging information is displayed

dso.showQueryLog = true;

dso.connect

You need to use this method to link to the database before you can manipulate the database

await dso.connect({
  hostname: "127.0.0.1", // database hostname
  port: 3306, // database port
  username: "root", // database username
  passwod: "", // database password
  db: "dbname" // database name. (tips: The database must be created before linking)
});

dso.define()

Add an annotated Model instance and return the instance.

@Model("users")
class UserModel extends BaseModel<UserModel> {
  @Field({
    type: FieldType.INT,
    primary: true,
    length: 11,
    autoIncrement: true
  })
  id: number;

  @Field({ type: FieldType.STRING, length: 30 })
  name: string;

  @Field({ type: FieldType.STRING, length: 30 })
  password: string;
}

export default const userModel = dso.define(UserModel);

// userModel.findById(...)
// userModel.findAll(...)
// userModel.findOne(...)
// userModel.insert(...)
// userModel.update(...)
// userModel.delete(...)

dso.sync

When installing or initializing a database, you can use sync to synchronize the database model to the database.

// If set to FORCE, tables will be deleted before they are created,
// otherwise only new models will be synchronized.
const force = true; // force
await dso.sync(force);

dso.transaction(processor: (transaction: Transaction) => Promise): Promise

Create and start a transaction.

New Model instances must be obtained through getModel(Model). Otherwise, it will not be controlled by transactions.

const result = await dso.transaction<boolean>(async trans => {
  const userModel = trans.getModel(UserModel);
  const topicModel = trans.getModel(TopicModel);

  userId = await userModel.insert({ nickName: "foo", password: "bar" });
  topicId = await topicModel.insert({ title: "zoo", userId });
  return true;
});

Top Level Types

FieldType

Field

Field type describes the following properties of a field

key type default value desc
type one of the FieldTypes null types of database fields
length number unfixed field length
primary boolean false database primary key?
default any null default values for fields
autoIncrement boolean false identify auto-increment fields. It can only be used for INT types
notNull boolean false identity fields can not be null
autoUpdate boolean false updated automatically according to the current timestamp. It can only be used for DATE types

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