iPhone Persistence For Mere Mortals

•

1 like•2,229 views

The document discusses various approaches to data persistence on the iPhone, including using the Settings app to store user preferences, SQLite for relational database storage, and the filesystem. It provides code examples and recommendations for encapsulating persistence logic, considering how data will be used, and other best practices like using transactions with SQLite. The document also provides links to code samples and the presenter's other online profiles.

Technology

Code and Slides:
http://thillerson.googlecode.com

iPhone Persistence Tony Hillerson
For Mere Mortals Software Architect

Tuesday, March 3, 2009

Persistence

Code and Slides:
http://thillerson.googlecode.com

Tuesday, March 3, 2009

Persistence

Code and Slides:
http://thillerson.googlecode.com

... or it means saving stuﬀ.

Tuesday, March 3, 2009

Persistence: Disclaimer

Code and Slides:
http://thillerson.googlecode.com

BTW: I’m a n00b

Tuesday, March 3, 2009

Code and Slides:
http://thillerson.googlecode.com

Persistence: Savin’ stuﬀ on ur fone
Your options

Tuesday, March 3, 2009

Persistence: Options

Code and Slides:
http://thillerson.googlecode.com
Settings
SQLite
Filesystem
The Internets

Tuesday, March 3, 2009

Persistence: Our Sweet App

Code and Slides:
http://thillerson.googlecode.com

Tuesday, March 3, 2009

Persistence: Sweet Codes
http://github.com/thillerson/grocery_getter/
Code and Slides:
http://thillerson.googlecode.com
Download

Tuesday, March 3, 2009

Code and Slides:
http://thillerson.googlecode.com

Persistence: Settings
Yours or Apple’s?

Tuesday, March 3, 2009

Persistence: Settings

Code and Slides:
http://thillerson.googlecode.com

Apple’s => Settings.bundle
Yours => Roll your own
Both end up in
NSUserDefaults

Tuesday, March 3, 2009

Persistence: Settings

Code and Slides:
http://thillerson.googlecode.com
Can be one of:
NSData, NSString,
NSNumber, NSDate,
NSArray, or NSDictionary

Tuesday, March 3, 2009

Persistence: Settings

Code and Slides:
http://thillerson.googlecode.com
NSUserDefaults *settings =
[NSUserDefaults standardUserDefaults];
[settings setBool:YES
forKey:@quot;shouldSortAfterCompletequot;];
[NSUserDefaults standardUserDefaults];

[NSUserDefaults resetStandardUserDefaults];
BOOL on =
[settings
boolForKey:@quot;shouldSortAfterCompletequot;];

Tuesday, March 3, 2009

Code and Slides:
http://thillerson.googlecode.com

Persistence: SQLite
It’s small, but it’s feisty!

Tuesday, March 3, 2009

Persistence: SQLite

Code and Slides:
http://thillerson.googlecode.com

YO DAWG I HERD YOU
LIEK DATA...
Tuesday, March 3, 2009

Persistence: SQLite

Code and Slides:
http://thillerson.googlecode.com

SQLite - Embedded Relational
Database written in C

Tuesday, March 3, 2009

Persistence: SQLite

Code and Slides:
http://thillerson.googlecode.com
Embedded Relational Database

written in C

Tuesday, March 3, 2009

SQLite:
Code and Slides:
Hic Draconae
http://thillerson.googlecode.com
Sunt

CocoaTouch:
Terra Firma

Tuesday, March 3, 2009

Persistence: SQLite

Code and Slides:
http://thillerson.googlecode.com
3 Takes on our Sweet App:
• SQLite C API
• fmdb + fmdb-migration-
manager
• Aptiva’s ActiveRecord

Tuesday, March 3, 2009

Persistence: SQLite

Code and Slides:
http://thillerson.googlecode.com
SQL C API:
http://www.sqlite.org/c3ref/
funclist.html

Tuesday, March 3, 2009

Persistence: SQLite

Code and Slides:
• fmdb - Thin Wrapper around SQLite
http://thillerson.googlecode.com
• fmdb-migration-manager - Rails-style
migrations using fmdb

• http://code.google.com/p/ ycode/
• http://github.com/mocra/fmdb-
migration-manager/

Tuesday, March 3, 2009

Persistence: SQLite

Code and Slides:
• Aptiva’s ActiveRecord
http://thillerson.googlecode.com
In software engineering, the active record pattern is a design
pattern frequently found in software that stores its data in
relational databases. It was named by Martin Fowler in his book
Patterns of Enterprise Application Architecture.
- http://en.wikipedia.org/wiki/Active_record_pattern

http://github.com/aptiva/
activerecord/

Tuesday, March 3, 2009

Persistence: SQLite

Code and Slides:
http://thillerson.googlecode.com

Quick! To the CODES!

Tuesday, March 3, 2009

Code and Slides:
http://thillerson.googlecode.com

Persistence: A Few Points
Take two, they’re small!

Tuesday, March 3, 2009

Persistence: Tips

Code and Slides:
http://thillerson.googlecode.com

Consider how your
settings will be used

Tuesday, March 3, 2009

Persistence: Tips

Code and Slides:
http://thillerson.googlecode.com

A database is an
implementation detail

Tuesday, March 3, 2009

Persistence: Tips

Code and Slides:
http://thillerson.googlecode.com

Encapsulation is your
friend

Tuesday, March 3, 2009

Persistence: Tips

Code and Slides:
http://thillerson.googlecode.com

Don’t forget to move your
database

Tuesday, March 3, 2009

Persistence: Tips

Code and Slides:
http://thillerson.googlecode.com
SQLite write speed is
constrained by
transactions

Tuesday, March 3, 2009

Persistence: Tips

Code and Slides:
http://thillerson.googlecode.com

SQLite uses duck-typing

Tuesday, March 3, 2009

Persistence: Tips

Code and Slides:
http://thillerson.googlecode.com
FMDB:
executeQuery !=
executeUpdate

Tuesday, March 3, 2009

Persistence: Tips

Code and Slides:
http://thillerson.googlecode.com

RTFS

Tuesday, March 3, 2009

Persistence: Thank you!
Tony Hillerson
Code and Slides:
Software Architect

http://thillerson.googlecode.com
slideshare.com/thillerson
github.com/thillerson
twitter.com/thillerson
brightkite.com/thillerson

EﬀectiveUI.com

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iPhone Persistence For Mere Mortals

1. Code and Slides: http://thillerson.googlecode.com iPhone Persistence Tony Hillerson For Mere Mortals Software Architect Tuesday, March 3, 2009

2. Persistence Code and Slides: http://thillerson.googlecode.com Tuesday, March 3, 2009

3. Persistence Code and Slides: http://thillerson.googlecode.com ... or it means saving stuﬀ. Tuesday, March 3, 2009

4. Persistence: Disclaimer Code and Slides: http://thillerson.googlecode.com BTW: I’m a n00b Tuesday, March 3, 2009

5. Code and Slides: http://thillerson.googlecode.com Persistence: Savin’ stuﬀ on ur fone Your options Tuesday, March 3, 2009

6. Persistence: Options Code and Slides: http://thillerson.googlecode.com Settings SQLite Filesystem The Internets Tuesday, March 3, 2009

7. Persistence: Options Code and Slides: http://thillerson.googlecode.com Settings SQLite Filesystem The Internets Tuesday, March 3, 2009

8. Persistence: Our Sweet App Code and Slides: http://thillerson.googlecode.com Tuesday, March 3, 2009

9. Persistence: Sweet Codes http://github.com/thillerson/grocery_getter/ Code and Slides: http://thillerson.googlecode.com Download Tuesday, March 3, 2009

10. Code and Slides: http://thillerson.googlecode.com Persistence: Settings Yours or Apple’s? Tuesday, March 3, 2009

11. Persistence: Settings Code and Slides: http://thillerson.googlecode.com Apple’s => Settings.bundle Yours => Roll your own Both end up in NSUserDefaults Tuesday, March 3, 2009

12. Persistence: Settings Code and Slides: http://thillerson.googlecode.com Can be one of: NSData, NSString, NSNumber, NSDate, NSArray, or NSDictionary Tuesday, March 3, 2009

13. Persistence: Settings Code and Slides: http://thillerson.googlecode.com NSUserDefaults *settings = [NSUserDefaults standardUserDefaults]; [settings setBool:YES forKey:@quot;shouldSortAfterCompletequot;]; [NSUserDefaults standardUserDefaults]; [NSUserDefaults resetStandardUserDefaults]; BOOL on = [settings boolForKey:@quot;shouldSortAfterCompletequot;]; Tuesday, March 3, 2009

14. Code and Slides: http://thillerson.googlecode.com Persistence: SQLite It’s small, but it’s feisty! Tuesday, March 3, 2009

15. Persistence: SQLite Code and Slides: http://thillerson.googlecode.com YO DAWG I HERD YOU LIEK DATA... Tuesday, March 3, 2009

16. Persistence: SQLite Code and Slides: http://thillerson.googlecode.com SQLite - Embedded Relational Database written in C Tuesday, March 3, 2009

17. Persistence: SQLite Code and Slides: http://thillerson.googlecode.com Embedded Relational Database written in C Tuesday, March 3, 2009

18. SQLite: Code and Slides: Hic Draconae http://thillerson.googlecode.com Sunt CocoaTouch: Terra Firma Tuesday, March 3, 2009

19. Persistence: SQLite Code and Slides: http://thillerson.googlecode.com 3 Takes on our Sweet App: • SQLite C API • fmdb + fmdb-migration- manager • Aptiva’s ActiveRecord Tuesday, March 3, 2009

20. Persistence: SQLite Code and Slides: http://thillerson.googlecode.com SQL C API: http://www.sqlite.org/c3ref/ funclist.html Tuesday, March 3, 2009

21. Persistence: SQLite Code and Slides: • fmdb - Thin Wrapper around SQLite http://thillerson.googlecode.com • fmdb-migration-manager - Rails-style migrations using fmdb • http://code.google.com/p/ ycode/ • http://github.com/mocra/fmdb- migration-manager/ Tuesday, March 3, 2009

22. Persistence: SQLite Code and Slides: • Aptiva’s ActiveRecord http://thillerson.googlecode.com In software engineering, the active record pattern is a design pattern frequently found in software that stores its data in relational databases. It was named by Martin Fowler in his book Patterns of Enterprise Application Architecture. - http://en.wikipedia.org/wiki/Active_record_pattern http://github.com/aptiva/ activerecord/ Tuesday, March 3, 2009

23. Persistence: SQLite Code and Slides: http://thillerson.googlecode.com Quick! To the CODES! Tuesday, March 3, 2009

24. Code and Slides: http://thillerson.googlecode.com Persistence: A Few Points Take two, they’re small! Tuesday, March 3, 2009

25. Persistence: Tips Code and Slides: http://thillerson.googlecode.com Consider how your settings will be used Tuesday, March 3, 2009

26. Persistence: Tips Code and Slides: http://thillerson.googlecode.com A database is an implementation detail Tuesday, March 3, 2009

27. Persistence: Tips Code and Slides: http://thillerson.googlecode.com Encapsulation is your friend Tuesday, March 3, 2009

28. Persistence: Tips Code and Slides: http://thillerson.googlecode.com Don’t forget to move your database Tuesday, March 3, 2009

29. Persistence: Tips Code and Slides: http://thillerson.googlecode.com SQLite write speed is constrained by transactions Tuesday, March 3, 2009

30. Persistence: Tips Code and Slides: http://thillerson.googlecode.com SQLite uses duck-typing Tuesday, March 3, 2009

31. Persistence: Tips Code and Slides: http://thillerson.googlecode.com FMDB: executeQuery != executeUpdate Tuesday, March 3, 2009

32. Persistence: Tips Code and Slides: http://thillerson.googlecode.com RTFS Tuesday, March 3, 2009

33. Persistence: Thank you! Tony Hillerson Code and Slides: Software Architect http://thillerson.googlecode.com slideshare.com/thillerson github.com/thillerson twitter.com/thillerson brightkite.com/thillerson EﬀectiveUI.com Tuesday, March 3, 2009

iPhone Persistence For Mere Mortals

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