mobile apps with coldfusion
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© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
Terry Ryan | EvangelistBuilding ColdFusion Powered Mobile Applications
Developer Week June 20 – June 24, 2011
© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
Assumptions
You know a little ColdFusion
You know a little Flex
You know what AIR is
You’ve heard about AIR on Mobile Devices
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© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
What is this about?
“Building ColdFusion Powered Mobile Applications”
More specifically
ColdFusion support for data in mobile apps.
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© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
Review
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© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
ColdFusion - Do you know what a CFC is?
ColdFusion Component
Collection of Functions
Functions
Have “Scope” remote, public, package, and private
Remote means accessible to the world remotely through a webservice
Remote Access
Plain Text
WDDX
JSON
AMF or Flash Remoting
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© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
Flex – Do you know what a remote object is?
RemoteObject
Remote Server call
Uses AMF
AMF
Client requests data
Server converts from server objects to ActionScript objects
Server transmits binary objects to requesting client
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© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
Mobile Apps = AIR
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© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
AIR for Devices
app.bar
app.apk
app.ipa
© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
AIR and SQLite
AIR uses SQLite for offline data access
SQLite is tiny footprint database
Used in
Native IOS
Native Android
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© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
Application We are building
Staff information for my immediate team
1 table
Person information
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© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
Demo – Backend Code
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© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
Approaches to Mobile Data
Mobile only (Not Covered)
Network Only
Read only cache
Sync-able cache
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© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
Network Only
Backend Server has database
User requests data
Mobile App requests data
Mobile App presents it directly to user
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© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
Network Only
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RemoteObject
Service
© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
Demo – Network Only
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© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
Network Only
Pros
Easy to write Simple Apps
Cons
Good For
Demo apps Proof of Concepts Stale data worse then
no data
Have to be connected to network
No interactivity
Take away
You just turned your app in to a dumbed down browser
© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
Read Only Cache
Backend Server has database
Mobile App has database
User requests data
Mobile app presents data from its database
Mobile App requests data
Mobile App overwrites all its data.
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© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
Read Only Cache
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RemoteObject
DAOService
© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
Demo – Read Only Cache
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© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
Read only Cache
Pros
Moderately easy to write
Allows offline access
Cons
Good For
Consumption apps Stop gap app
No interactivity
Take aways
Better then network only
Still limited Might be right for your
users
© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
Synch-able Cache
Backend Server has database
Mobile App has database
User requests/alters data
Mobile app presents/alters data from/for its database
Mobile App synchs all its data.
Mobile app and server manage conflicts
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© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
CF AIR Synch
ColdFusion 9 Introduced AIR Offline support
You write a sychmanager that matched ISynchmanager interface
You include cfair.swc in your Flex
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© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
Synch-able Cache
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MainSynchManager
Service
© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
Demo – Synch-able Cache
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© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
Synch-able Cache
Pros
This is a real app Much easier then
writing all of that code
Cons
Good For
Real apps
So complex to write, simplified version is still complex
Code is obscured
Take aways
Might work for you Still might have to roll
your own
© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
Tips
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© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential. 27
Sometimes you have to manually cast
DAO
CFAIR Synch
© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
Watch out for circular references
ORM with relationships
Copy ColdFusion ORM and remove relationships
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© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
App should only present local
All app data should be displayed from local
App should only synch to server
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© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
Prepare databases
Ship apps with prepopulated databases
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© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
Use Asynchronous Database calls
Little harder then you are used to
But allows for responsive apps.
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Download adobe.com/go/try_flashbuilderadobe.com/go/coldfusion
Learn adobe.com/devnet/flexadobe.com/devnet/coldfusion
© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential. 33
Code http://bitly.com/bundles/tpryan/2
© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.
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