Neo4jose

Instalation

First you need to install neo4j-driver npm install neo4j-driver --save After this... const neo4j = require('neo4j-driver'); const auth = neo4j.v1.auth.basic(USERNSME, PASSWORD); const driver = neo4j.v1.driver("bolt://localhost", auth); const session = driver.session();

So, we have a session, it's required parameter. Instalation of neo4jose: npm install neo4jose --save

Importing

So, after we need to import neo4jose const neo4jose = require('neo4jose');

Using

If we need to make model(example): const User = neo4jose.model("User"); const user1 = new User({ username: 'user1', age: '10' });

Methods

save

Save object in database, that was initialized, exapmle: const result = user1.save(session); First Arg: required arg for making request. Method returns saved object.

saveWithRelationship

Save object in database, that was initialized, but not like a single node, but with relationship with another node, example:

• const result =  user1.saveWithRelationship(session,[{
      obj: {username: 'user2', label: 'User'},
      relation: 'FRIEND', direction: 'INTO'
  },{
      obj: {username: 'user3', label: 'User'},
      relation: 'FRIEND', direction: 'OUTTO'
  }]

  Second Argument must be array of object(s): each of them must have next properties:
  • obj, another object, that will be in relationship with caller of method, structure of obj:

•         {
    		    propertyForSearch : Value
    	        labelOfThisObject : Value
    	    }
      

  • relation

• direction
  • INTO
  • OUTTO

findAll

Returns all nodes of this model, expample: const allUsers = User.findAll(session);

isAlreadyExist

Check if nodes is already created. Method returns boolean. Example:

• const result = User.isAlreadyExist(session, {
    	  username: 'user1', 
    	  age: '10'
  });

findAndUpdate

Method to update selected node. Example:

• const result = await User.findAndUpdate(session, {
      username: 'user1', 
    	  age: '10'
   },{
    	  age: '50'
   });

First Arg: required arg for making request Second Arg: object that will be searched in db

• structure of object:{
      propertyForSearch : Value
      labelOfThisObject : Value
  }

Third Arg: object with new properties of node Method returns new object if it was updated

findAndDelete

Expample:

•  const result = await User.findAndDelete(session,{
      username: 'user1', 
       age: '10'
   });