https://github.com/adam-cowley/nest-neo4j

A NestJS module for integrating with Neo4j
https://github.com/adam-cowley/nest-neo4j

database hacktoberfest neo4j nestjs

Last synced: about 1 month ago
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A NestJS module for integrating with Neo4j

• Host: GitHub
• URL: https://github.com/adam-cowley/nest-neo4j
• Owner: adam-cowley
• License: apache-2.0
• Created: 2020-06-29T15:26:09.000Z (over 4 years ago)
• Default Branch: main
• Last Pushed: 2023-03-15T16:26:07.000Z (over 1 year ago)
• Last Synced: 2024-09-28T13:41:09.150Z (about 2 months ago)
• Topics: database, hacktoberfest, neo4j, nestjs
• Language: TypeScript
• Homepage:
• Size: 118 KB
• Stars: 71
• Watchers: 9
• Forks: 22
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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# Nest Neo4j

> Neo4j integration for Nest

## Description

This repository provides [Neo4j](https://www.neo4j.com) integration for [Nest](http://nestjs.com/).

## Installation

```

$ npm i --save nest-neo4j

```

## Quick Start

Register the Neo4j Module in your application using the `forRoot` method, passing the neo4j connection information as an object:

```ts

import { Module } from '@nestjs/common';

import { AppController } from './app.controller';

import { AppService } from './app.service';

import { Neo4jModule } from 'nest-neo4j'

@Module({

  imports: [

    Neo4jModule.forRoot({

      scheme: 'neo4j',

      host: 'localhost',

      port: 7687,

      username: 'neo4j',

      password: 'neo'

    })

  ],

  controllers: [AppController],

  providers: [AppService],

})

export class AppModule {}

```

## Querying Neo4j

The `Neo4jService` is `@Injectable`, so can be passed into any constructor:

```ts

import { Neo4jService } from 'nest-neo4j'

@Controller()

export class AppController {

  constructor(private readonly appService: AppService,

    private readonly neo4jService: Neo4jService

    ) {}

  @Get()

  async getHello(): Promise {

    const res = await this.neo4jService.read(`MATCH (n) RETURN count(n) AS count`)

    return `There are ${res.records[0].get('count')} nodes in the database`

  }

}

```

## Methods

```ts

getConfig(): Neo4jConnection;

getReadSession(database?: string): Session;

getWriteSession(database?: string): Session;

read(query: string, params?: object, database?: string): Result;

write(query: string, params?: object, database?: string): Result;

```

# More Information

For more information about running Neo4j in your Node.js or TypeScript project, check out [Neo4j GraphAcademy](https://graphacademy.neo4j.com).