Simple high level API for accessing graphs

Usage

defmodule Shared do

use Dlex.Node

shared do
  field :id, :string, index: ["term"]
  field :name, :string, index: ["term"]
end

end

defmodule User do

use Dlex.Node, depends_on: Shared

schema "user" do
  field :id, :auto
  field :name, :auto
end

end

defmodule User do

use Dlex.Node

schema "user" do
  field :id, :auto, depends_on: Shared
  field :name, :string, index: ["term"]
  field :age, :integer
  field :cache, :any, virtual: true
  field :owns, :uid
end

end

Dgraph types:

* `:integer`
* `:float`
* `:string`
* `:geo`
* `:datetime`
* `:uid`
* `:auto` - special type, which can be used for `depends_on`

Reflection

Any schema module will generate the __schema__ function that can be used for runtime introspection of the schema:

• __schema__(:source) - Returns the source as given to schema/2;

• __schema__(:fields) - Returns a list of all non-virtual field names;

• __schema__(:alter) - Returns a generated alter schema

• __schema__(:field, field) - Returns the name of field in database for field in a struct and vice versa;

• __schema__(:type, field) - Returns the type of the given non-virtual field;

Additionally it generates Ecto compatible __changeset__ for using with Ecto.Changeset.