Prisma support for Node.js

Introduction

Prisma is an open source next-generation framework - see https://www.prisma.io/docs for more information.

Objects

Prisma framework particularly supports access to both SQL and MongoDB databases. For the SQL analysis, the entities are created from the prisma configuration file, and the entity operations linked to these entities are also created then. For the MongoDB analysis, a connection and the collections are created from the prisma configuration file:

‘Prisma Configuration’ object when .prisma file is found in project.
‘NodeJS Entity’ object when SQL database is used and a model keyword is found inside .prisma file.
‘NodeJS Entity Operation’ object when SQL database is used and a Prisma method is defined within a .js file.
‘NodeJS MongoDB connection’ or ‘NodeJS Unknown MongoDB connection’ object when MongoDB framework is used.
‘NodeJS MongoDB collection’ object when MongoDB framework is used and a model keyword is found inside .prisma file.

Icon	Description
	Prisma Configuration
	NodeJS Entity
	NodeJS Entity Operation
	NodeJS MongoDB connection
	NodeJS Unknown MongoDB connection
	NodeJS MongoDB collection

Analysis of prisma configuration file

If the .prisma configuration file is missing from the analyzed source code, this extension will not be able to create the objects above.

Supported persistence SQL databases

Supported operations

Entity Operation	Supported APIs
Add	prisma.entity.create prisma.entity.createMany
Update	prisma.entity.update prisma.entity.updateMany prisma.entity.upsert
Remove	prisma.entity.delete prisma.entity.deleteMany
Select	prisma.entity.findMany prisma.entity.findFirst prisma.entity.findFirstOrThrow prisma.entity.findUnique prisma.entity.findUniqueOrThrow prisma.entity.count

The ’entity’ above is ‘NodeJS Entity’ defined in .prisma file.

Supported links

Link Type	Caller type	Callee type
callLink	JavaScript function JavaScript initialisation	NodeJS Entity Operation: Add NodeJS Entity Operation: Update NodeJS Entity Operation: Remove NodeJS Entity Operation: Select
useInsertLink	NodeJS Entity Operation: Add	SQL table
useUpdateLink	NodeJS Entity Operation: Update	SQL table
useDeleteLink	NodeJS Entity Operation: Remove	SQL table
useSelectLink	NodeJS Entity Operation: Select	SQL table

Example

Taking the following codes of prisma and javascript files:

datasource db {
  provider = "postgresql"
  url      = "postgresql://doe:password@localhost:5432/mydb?schema=sample"
}

model User {
  id    Int     @id @default(autoincrement())
  email String  @unique
  name  String?
  posts Post[]
}

model Post {
  id        Int     @id @default(autoincrement())
  title     String
  content   String?
  published Boolean @default(false)
  author    User    @relation(fields: [authorId], references: [id])
  authorId  Int
}

const { PrismaClient } = require('@prisma/client')

const prisma = new PrismaClient()

async function main1() {
  const user1 = await prisma.user.create({
  })

  const user2 = await prisma.user.create({
  })

  const allUsers = await prisma.user.findMany({
  })
}

In this example, two ‘NodeJS Entity’ and two ‘NodeJS Entity Operation’ objects are created and two ‘call’ links between the function ‘main1’ and these entity operations are added. The SQL Analyzer or Missing tables and procedures for Node.js can then link these entity operations with the corresponding table. In the present case, this extension creates a ‘useInsert’ and a ‘useSelect’ links to the missing table ‘user’:

Supported persistence MongoDB database

Supported links

Link Type	Source and destination of link	Supported APIs
useInsertLink	Between JavaScript function (JavaScript initialisation also) and NodeJS MongoDB collection	prisma.entity.create prisma.entity.createMany
useUpdateLink	Between JavaScript function (JavaScript initialisation also) and NodeJS MongoDB collection	prisma.entity.update prisma.entity.updateMany prisma.entity.upsert
useDeleteLink	Between JavaScript function (JavaScript initialisation also) and NodeJS MongoDB collection	prisma.entity.delete prisma.entity.deleteMany
useSelectLink	Between JavaScript function (JavaScript initialisation also) and NodeJS MongoDB collection	prisma.entity.findMany prisma.entity.findFirst prisma.entity.findFirstOrThrow prisma.entity.findUnique prisma.entity.findUniqueOrThrow prisma.entity.count

The ’entity’ above is ‘NodeJS Entity’ defined in .prisma file.

Example

Taking the following codes of prisma and javascript files:

datasource db {
  provider = "mongodb"
  url      = "mongodb+srv://test:test@cluster0.mongodb.net/database2"
}

model User {
  id    Int     @id @default(autoincrement())
  email String  @unique
  name  String?
  posts Post[]
}

model Post {
  id        Int     @id @default(autoincrement())
  title     String
  content   String?
  published Boolean @default(false)
  author    User    @relation(fields: [authorId], references: [id])
  authorId  Int
}

const { PrismaClient } = require('@prisma/client')

const prisma = new PrismaClient()

async function main2() {
  const post1 = await prisma.post.create({
  })

  const post2 = await prisma.post.create({
  })

  const allPosts = await prisma.post.findMany({
  })
}

In this example, a ‘NodeJS MongoDB connection’ and two ‘NodeJS MongoDB collection’ objects are created. This extension creates a ‘useInsert’ and a ‘useSelect’ links from the function ‘main2’ to the collection ‘Post’: