1. What’s Parse
Tsutomu Ogasawara

2. https://www.parse.com/

3. What’s Parse?
• BaaS for iOS / Android
• Quick Start / Minimum Configuration
• Full Stack SDK
• Rest API / JavaScript SDK
• Useful Documentations / Tutorials
• Freemium

4. Code Examples
Objective-C for iOS
PFObject*post = [PFObjectobjectWithClassName:@"Post"];
[post setObject:@"Hello World"forKey:@"title"];
[post setObject:@"I got Parse working on iOS!"forKey:@"content"];
[post saveInBackground];
Java for Android
ParseObjectpost = new ParseObject("Post");
post.put("title", "Hello World");
post.put("content", "I got Parse working on Android!");
post.saveInBackground();
JavaScript
varPost = Parse.Object.extend("Post");
varpost = new Post();
post.set("title", "Hello World");
post.set("content", "I got Parse working on Android!");
post.save(null, { success: function() {}, error: function() {} );

5. Structure
Data Storage
User Authentication
Push Notification
Rest API
iOS SDK
JavaScript SDK
Android SDK
JavaScript SDK

6. Functions
• Data Storage / File Storage
• Push Notification Gateway
• User Management
• Geo Location Support
• Facebook& Twitter

7. Data Storage / File Storage
• SQL-like simple Database (PFObject)
– Schemaless row-column model
– Working in the background
– Spreadsheet-like Data browser on parse.com
– Many ways to retrieve data
• File store (PFFile)
– File storage up to 10MB per file.
– Working in the background and get the progress.
– Examples.

8. Save a photo
PFObject *photo = [PFObjectobjectWithClassName:@"Photo"];
PFUser *currentUser = [PFUsercurrentUser];
[photo setObject:currentUserforKey:@"user"];
[photo setObject:photoIDforKey:@"photo_id"];
[photo saveInBackgroundWithBlock:^(BOOLsucceeded, NSError *error) {
if( succeeded ) {
}
else {
}
}];
Retrieve photos
PFQuery *query = [PFQueryqueryWithClassName:@"Photo"];
[query orderByDescending:@"updatedAt"];
[query findObjectsInBackgroundWithBlock:
^(NSArray *objects, NSError *error) {
if( ! error ) {
}
else {
}
}];

9. Push Notification (PFPush)
• Cross platform
– iOS -> Android / Android ->iOS
– Broadcast to both OS apps.
• Send from
– Apps
– REST API
– Web console on parse.com

10. Subscribe push notification channel
PFUser *user = [PFUsercurrentUser];
NSString *channel = [NSStringstringWithFormat:@"user_%@", user.objectId];
[PFPushsubscribeToChannelInBackground:channelblock:
^(BOOLsucceeded, NSError *error) {
...
}];
Send a notification
PFUser *user = [photoObjectobjectForKey:@"user"];
NSString *channel = [NSStringstringWithFormat:@"user_%@", user.objectId];
NSString *commenter = [currentUser
valueForKeyPath:@"twitter_userdata.screen_name"];
NSString *alert = [NSStringstringWithFormat:
@"%@ さんがコメントしました。", commenter];
NSDictionary *data = [NSDictionarydictionaryWithObjectsAndKeys:
commentObject.objectId, @"comment",
photoObject.objectId, @"photo",
alert, @"alert",
@"default", @"sound",
nil];
[PFPushsendPushDataToChannelInBackground:channelwithData:data];

11. User Management (PFUser)
• Original Signup and Login
– Email address verification
– Resetting Password
– User Interfaces
• Login with Facebook& Twitter
• Security
– Access Control List (PFACL)
– Role-based Access Control (PFRole)

12. Geo Location (PFGeoPoint)
• Store a geo location data in PFObject
• Query objects
– ordered by distance.
– within miles / km / radians
– within rectangle from south-west to north-east
• Examples

13. Facebook& Twitter
• Authentication
• Libralies
– PF_Facebook which is the wrapper of
FacebookiOS SDK
– PF_Twitter which calls Twitter REST API

14. Facebook login
- (IBAction)pressLoginButton:(id)sender {
NSArray *permissions = [[NSArrayalloc] initWithObjects:
@"user_likes", @"read_stream”, nil];
// Switch Facebook app or open facebook login page in Safari
[PFFacebookUtilslogInWithPermissions:permissions block:
^(PFUser *user, NSError *error) {
if( user && ! error ) {
// logged in with Facebook
}
}];
}
Twitter login
- (IBAction)pressLoginButton:(id)sender {
// Call Twitter login dialog
[PFTwitterUtilslogInWithBlock:^(PFUser *user, NSError *error) {
if( user && ! error ) {
// logged in with Twitter
}
}];
}

15. Twitter API call with authentication
// generate request object
NSURL *url = [NSURLURLWithString:
@"https://api.twitter.com/1/account/verify_credentials.json"];
NSMutableURLRequest *request = [NSMutableURLRequestrequestWithURL:url];
// sign the request with auth user
PF_Twitter *twitter = [PFTwitterUtilstwitter];
[twitter signRequest:request];
// send request
NSURLResponse *response = nil;
NSError *error = nil;
NSData *data = [NSURLConnectionsendSynchronousRequest:request
returningResponse:&response
error:&error];
if( data ) {
// save user info
NSDictionary *jsonObjects = [NSJSONSerialization
JSONObjectWithData:data
options:NSJSONReadingMutableContainers
error:&error];
}

16. Thanks!