The graph from mylovetop

Welcome to Graph

Graph is a CoreData framework written in Swift. It's designed to simplify the complexities when working with CoreData while providing a seamless data-driven architecture.

Features

Requirements

iOS 8.0+ / Mac OS X 10.9+
Xcode 7.2+

Communication

If you need help, use Stack Overflow. (Tag 'cosmicmind')
If you'd like to ask a general question, use Stack Overflow.
If you found a bug, and can provide steps to reliably reproduce it, open an issue.
If you have a feature request, open an issue.
If you want to contribute, submit a pull request.

Installation

Embedded frameworks require a minimum deployment target of iOS 8 or OS X Mavericks (10.9).

Download Graph

Visit the Installation page to learn how to install Graph using CocoaPods and Carthage.

Changelog

Graph is a growing project and will encounter changes throughout its development. It is recommended that the Changelog be reviewed prior to updating versions.

Examples

Visit the Examples directory to see example projects using Graph.

Entity

An Entity is a model object that represents a person, place, or thing. For example, a Company, Photo, Video, User, Person, and Note. In code, the following is how this would look.

let graph: Graph = Graph()

// Create a Person Entity.
let elon: Entity = Entity(type: "Person")
elon["firstName"] = "Elon"
elon["lastName"] = "Musk"

let path: String = NSBundle.mainBundle().pathForResource("ElonMusk", ofType: "png")!
elon["photo"] = UIImage(contentsOfFile: path)

graph.save()

Learn More About Entities

Relationship

A Relationship is a model object that forms a relationship between two Entities. For example, "Mark is an Employee of Facebook". Mark and Facebook are two Entities that form a Relationship -- of type Employee. In code, the following is how this would look.

let graph: Graph = Graph()

// Create a Person Entity.
let mark: Entity = Entity(type: "Person")
mark["firstName"] = "Mark"
mark["lastName"] = "Zuckerberg"

let path: String = NSBundle.mainBundle().pathForResource("MarkZuckerberg", ofType: "png")!
mark["photo"] = UIImage(contentsOfFile: path)

// Create a Company Entity.
let facebook: Entity = Entity(type: "Company")
facebook["name"] = "Facebook"

// Create an Employee Relationship.
let employee: Relationship = Relationship(type: "Employee")
employee["startDate"] = "February 4, 2004"

// Form the relationship.
employee.subject = mark
employee.object = facebook

graph.save()

Notice that information about the relationship is stored within the Employee Relationship leaving both Mark and Facebook to form other relationships freely. This is a key principal when using Relationships.

Learn More About Relationships

Action

An Action is a model object that forms a relationship between a collection of Entity subjects and a collection of Entity objects. For example, "Apple Acquired Beats Electronics". The Acquired Action captures the Company Entities in a single relationship that may be used later to ask questions like, "which company acquired Beats Electronics?", or "what companies did Apple acquire?". In code, the following is how this would look.

let graph: Graph = Graph()

// Create a Company Entity.
let apple: Entity = Entity(type: "Company")
apple["name"] = "Apple"

// Create a Company Entity.
let beats: Entity = Entity(type: "Company")
beats["name"] = "Beats Electronics"

// Create an Acquired Action.
let acquired: Action = Action(type: "Acquired")
acquired["acquisitionDate"] = "May 28, 2014"

// Form the action.
acquired.addSubject(apple)
acquired.addObject(beats)

graph.save()

Notice that information about the action is stored within the Acquired Action leaving both Apple and Beats Electronics to form other actions freely. This is a key principal when using Actions.

Learn More About Actions

Groups

Groups are used to organize Entities, Relationships, and Actions into different collections from their types. This allows multiple types to exist in a single collection. For example, a Photo and Video Entity type may exist in a group called Media. Another example may be including a Photo and Book Entity type in a Favorites group for your users' account. Below are examples of using groups.

let graph: Graph = Graph()

let photo: Entity = Entity(type: "Photo")
photo.addGroup("Media")
photo.addGroup("Favorites")
photo.addGroup("Holiday Album")

let video: Entity = Entity(type: "Video")
video.addGroup("Media")

let book: Entity = Entity(type: "Book")
book.addGroup("Favorites")
book.addGroup("To Read")

graph.save()

// Searching groups.
let favorites: Array<Entity> = graph.searchForEntity(groups: ["Favorites"])

Data Driven

As data moves through your application, the state of information may be observed to create a reactive experience. Below is an example of watching when a "User Clicked a Button".

// Set the UIViewController's Protocol to GraphDelegate.
let graph: Graph = Graph()
graph.delegate = self

graph.watchForAction(types: ["Clicked"])

let user: Entity = Entity(type: "User")
let clicked: Action = Action(type: "Clicked")
let button: Entity = Entity(type: "Button")

clicked.addSubject(user)
clicked.addObject(button)

graph.save()

// Delegate method.
func graphDidInsertAction(graph: Graph, action: Action) {
    switch(action.type) {
    case "Clicked":
      print(action.subjects.first?.type) // User
      print(action.objects.first?.type) // Button
    case "Swiped":
      // Handle swipe.
    default:break
    }
 }

Faceted Search

To explore the intricate relationships within Graph, the search API adopts a faceted design. The below examples show how to use the Graph search API:

Searching multiple Entity types.

let graph: Graph = Graph()
let collection: Array<Entity> = graph.searchForEntity(types: ["Photo", "Video"])

Searching multiple Entity groups.

let graph: Graph = Graph()
let collection: Array<Entity> = graph.searchForEntity(groups: ["Media", "Favorites"])

Searching multiple Entity properties.

let graph: Graph = Graph()
let collection: Array<Entity> = graph.searchForEntity(properties: [(key: "name", value: "Eve"), ("age", 27)])

Searching multiple facets simultaneously will aggregate all results into a single collection.

let graph: Graph = Graph()
let collection: Array<Entity> = graph.searchForEntity(types: ["Photo", "Friends"], groups: ["Media", "Favorites"])

Filters may be used to narrow in on a search result. For example, searching a book title and group within purchases.

let graph: Graph = Graph()

let collection: Array<Action> = graph.searchForAction(types: ["Purchased"]).filter { (action: Action) -> Bool in
	if let entity: Entity = action.objects.first {
		if "Book" == entity.type && "The Holographic Universe" == entity["title"] as? String  {
			return entity.hasGroup("Physics")
		}
	}
	return false
}

License

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
Neither the name of Graph nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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graph's Introduction