NeodeGM

Experiments in how neode could become more object oriented.

Example

• Create your model as a class:

// Create
@Node({ labels: ['Person', 'Actor'] })
export default class Person {
    @Uuid()
    @Primary()
    @Unique()
    id: string;

    @String()
    name: string;

    getId() {
        return this.id
    }

    getName() {
        return this.name
    }
}

• Write some code:

// Connect from .env
const neode = neode.fromEnv()

// TOOD: Open a transaction
neode.openTransaction()

// Create an object
const adam = new Person("92702e6b-4d39-4ad2-a4ad-cc3923496090", 'Adam')

// Save it
neode.save(adam)

// Retrieve it
const found = neode.find(Person, "92702e6b-4d39-4ad2-a4ad-cc3923496090")

Repository Pattern

• Create a repository based on the model:

// Use decorator to register the PersonRepository as using the Person node
@RepositoryDecorator(Person)
export default class PersonRepository extends Repository<Person> {}

• Create an instance of the repository and use it

[source,typescript]w

const repo = new PersonRepository()
const adam = repo.find("92702e6b-4d39-4ad2-a4ad-cc3923496090")

Transaction Management (TODO)

• Call the main repo to open a transaction - this will return a transaction based instance of neode. The save, create, (etc) methods will run everything in the context of a single transaction.

• Otherwise the base class will create a new transaction every time.

neode.inWriteTransaction()
    .then(async inTx => {
        const adam = new Person("92702e6b-4d39-4ad2-a4ad-cc3923496090", 'Adam')
        await inTx.save(adam)

        const arthur = new Person("92702e6b-4d39-4ad2-a4ad-cc3923496090", 'Arthur')
        await inTx.save(arthur)

        await inTx.commit()
    })

Annotations (TODO)

• @NeodeRepository

Entities

• ✓ @NodeEntity

• ❏ @RelationshipEntity

Property Types

• ✓ @String

• ✓ @Uuid

• ❏ @Int

• ❏ @Float

• ❏ @Number

• ❏ @Property

Relationships

• ❏ @OneToOne

• ❏ @OneToMany

Writing

• ❏ @Default

• ❏ @OnCreateSet

• ❏ @OnMatchSet

Schema

• ❏ @Primary

• ❏ @Unique

Other TODO’s

• ❏ neode.installSchema()