Don

1
Dont Be Q-lessExpanding Fusebox Functionality
with FuseQ

• John Quarto-vonTivadar
• FutureNow, Inc.
• www.futurenowinc.com
• john_at_techspedition.com

2
FuseQ to the ResQ

• FuseQ treats fuseactions like a queue
• A page request can be made up of one or more
  fuseactions
• Analogy In line at the Bank if no ones in
  front of you, you get to be the next one handled
  by the Teller if not, you wait your turn. Every
  once in a while youll let a little old lady skip
  ahead of you.
• FuseQ treats the fuseaction as a list handled
  in successive order
• Before leaving the core file, are there any
  Fuseactions left in the FuseQ?

3
Benefits of FuseQ

• Fuseactions are more atomic since the page
  request is not limited to a single FA
• No need for ltcfmodulegt to access code in other
  circuits
• no memory thread cost
• no passing thru of needed variables
• no kludges in scoping out-bound variables
• no successive recursion calls
• No core file changes are required to handle all
  of layout fuses, error/exception handling,
  Model-View-Controller, etc. These all flow
  naturally from FuseQs implementation

4
Features of FuseQ

• Layouts circuit-wide layouts are handled at the
  circuit layer (fbx_layouts) and fuse- or
  fuseaction-specific layouts are handled at the
  fuse layer
• Layout fuses can be applied from any circuit
  (similar to qry file feature)
• Because of zero core file dependencies, you can
  use traditional CF error and exception handling
  at the app, circuit, FA, and Fuse level. Nothing
  FB-specific!

5
Call Fusebox core file
Call Circuits.cfm
Call home circuits FBX_Settings
Fusebox 3 Execution Path
Call target circuits FBX_Switch
Call appropriate fuses
Call FBX_Layouts
Call layout files
Display output
6
Call Fusebox core file
Call Circuits.cfm
Call home circuits FBX_Settings
Call target circuits FBX_Switch
Call appropriate fuses
Call FBX_Layouts
Call layout files
Display output
7
Call Fusebox core file
Call Circuits.cfm
Call home circuits FBX_Settings
Call target circuits FBX_Switch
Call appropriate fuses
Call FBX_Layouts
Call layout files
Display output
8
Call Fusebox core file
Call Circuits.cfm
Call home circuits FBX_Settings
Call target circuits FBX_Switch
Call appropriate fuses
Call FBX_Layouts
Call layout files
Display output
9
Call Fusebox core file
Call Circuits.cfm
Call home circuits FBX_Settings
Call target circuits FBX_Switch
Call appropriate fuses
Call FBX_Layouts
Call layout files
Display output
10
Call Fusebox core file
Call Circuits.cfm
Call home circuits FBX_Settings
Call target circuits FBX_Switch
Call appropriate fuses
Call FBX_Layouts
Call layout files
Display output
11
Call Fusebox core file
Call Circuits.cfm
Call home circuits FBX_Settings
Call target circuits FBX_Switch
Call appropriate fuses
Call FBX_Layouts
Call layout files
Display output
12
Call Fusebox core file
Call Circuits.cfm
Call home circuits FBX_Settings
Call target circuits FBX_Switch
Call appropriate fuses
Call FBX_Layouts
Call layout files
Display output
13
Call Fusebox core file
Call Circuits.cfm
Call home circuits FBX_Settings
Call target circuits FBX_Switch
Call appropriate fuses
Call FBX_Layouts
Call layout files
Display output
14
Finished product
15
Call Fusebox core file
Techspedition Fusebox 3-compliant Execution Path
16
Call Fusebox core file
Call Circuits.cfm
17
Call Fusebox core file
Call Circuits.cfm
Call home circuits FBX_Settings
18
Call Fusebox core file
Call Circuits.cfm
Call home circuits FBX_Settings
Call target circuits FBX_Switch
19
Call Fusebox core file
Call Circuits.cfm
Call home circuits FBX_Settings
Call target circuits FBX_Switch
Call appropriate fuses
20
Call Fusebox core file
Call Circuits.cfm
Call home circuits FBX_Settings
Call target circuits FBX_Switch
Call FBX_Layouts
Call appropriate fuses
21
Call Fusebox core file
Call Circuits.cfm
Call home circuits FBX_Settings
Call layout files
Call target circuits FBX_Switch
Call FBX_Layouts
Call appropriate fuses
22
Call Fusebox core file
Call Circuits.cfm
Display output
Call home circuits FBX_Settings
Call layout files
Call target circuits FBX_Switch
Call FBX_Layouts
Call appropriate fuses
23
If FuseQ not empty then loop again
Call Fusebox core file
Call Circuits.cfm
Display output
Call home circuits FBX_Settings
Call layout files
Call target circuits FBX_Switch
Call FBX_Layouts
Call appropriate fuses
24
World.hello
25
World.hello
26
Finished product
27
World.hello
Company.getStock
User.getInfo
28
World.hello
Company.getStock
User.getInfo
29
World.hello
User.getInfo
Company.getStock
User.getInfo
30
World.hello
User.getInfo
Company.getStock
User.getInfo
31
World.hello
Company.getStock
User.getInfo
32
World.hello
Company.getStock
User.getInfo
33
World.hello
Company.getStock
User.getInfo
34
World.hello
Company.getStock
User.getInfo
35
World.hello
Company.getStock
User.getInfo
36
Finished product
37
Will I be stuck behind the Q-ball?

• Techspedition core file is a full private
  implementation of the Fusebox 3 spec
• Contains FuseQ and a number of other needed
  improvements excluded from the official FB3
  implementation
• Your Fusebox 3-compliant apps will work out of
  the box whether you use FuseQ or not
• Topology C ? C All legacy C code worked
  without a single change
• And its free, damn it!

38
Thats Q-ute, but lets see code!

• general use
• Layout Fuses
• Error/Exception Handling
• Short QA and lunch
• Model-View-Controller (Hal)
• Other Techspedition core file API features

39
Magellan traveled around the world just to end up
where he started.
With our books, he could have really gone
somewhere.
40

• CodeRutters Discovering Fusebox 3
• by Hal Helms and John Quarto-vonTivadar
• pre-order now on the web site for 19.99
• www.techspedition.com

41
Finding Your Inner FuseQon a techspedition into
knowledge

• Core files at www.techspedition.com
• Series of articles explaining FuseQ
• Other regular columns and guest authors speak
  about the development cycle, coding,
  cross-training your brain
• Exploring the FuseQ book in development
• Open call for authors were anxious to publish
  your book