Best Practice for writing device independent DAQ code

I am looking for the best way to handle a situation...
I have LabVIEW code talking to a DAQ card that has been configured through MAX. Now I need to change the DAQ card for a different model. I could be using any one of three different models with the same code. What is the best way to setup the LabVIEW code and/or the MAX configuration to handle this situation.
I know this is all a bit vague, but it's hypothetical for now so I don't have model numbers, etc.
Thanks

TobyD wrote:
I am looking for the best way to handle a situation...
I have LabVIEW code talking to a DAQ card that has been configured through MAX. Now I need to change the DAQ card for a different model. I could be using any one of three different models with the same code. What is the best way to setup the LabVIEW code and/or the MAX configuration to handle this situation.
I know this is all a bit vague, but it's hypothetical for now so I don't have model numbers, etc.
Thanks
CRELF mentioned on LAVA recently using the project to manage his hardware config.
I generally avoid using MAX to configure my hardware since maintaining the MAX config along side my app gets complicated. So i do all of my configuration explicitly in LV via code.
I am going be starting a new porject shortly where I will have to support multiples types of interfaces from serial through DAQ. My intention is to implement the hardware using LVOOP with child classes for each variation of hardware. Depending on the hardware config selected by the end user, I'll just let LVOOP handle all of the dirty work of using the right code for the config.
Just trying to help,
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

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IOS Update Best Practices for Business Devices

We're trying to figure out some best practices for doing iOS software updates to business devices. Our devices are scattered across 24 hospitals and parts of two states. Going forward there might be hundreds of iOS devices at each facility. Apple has tools for doing this in a smaller setting with a limited network, but to my knowledge, nothing (yet) for a larger implementation. I know configurator can be used to do iOS updates. I found this online:
https://www.youtube.com/watch?v=6QPbZG3e-Uc
I'm thinking the approach to take for the time being would be to have a mobile sync station setup with configurator for use at each facility. The station would be moved throughout the facility to perform updates to the various devices. Thought I'd see if anyone has tried this approach, or has any other ideas for dealing with device software updates. Thanks in advance.

Hi Bonesaw1962,
We've had our staff and students run iOS updates OTA via Settings -> Software Update. In the past, we put a DNS block on Apple's update servers to prevent users from updating iOS (like last fall when iOS 7 was first released). By blocking mesu.apple com, the iPads weren't able to check for or install any iOS software updates. We waited until iOS 7.0.3 was released before we removed the block to mesu.apple.com at which point we told users if they wanted to update to iOS 7 they could do so OTA. We used our MDM to run reports periodically to see how many people updated to iOS 7 and how many stayed on iOS 6. As time went on, just about everyone updated on their own.
If you go this route (depending on the number of devices you have), you may want to take a look at Caching Server 2 to help with the network load https://www.apple.com/osx/server/features/#caching-server . From Apple's website, "When a user on your network downloads new software from Apple, a copy is automatically stored on your server. So the next time other users on your network update or download that same software, they actually access it from inside the network."
I wish there was a way for MDMs to manage iOS updates, but unfortunately Apple hasn't made this feature available to MDM providers. I've given this feedback to our Apple SE, but haven't heard if it is being considered or not. Keeping fingers crossed.
Hope this helps. Let us know what you decide on and keep us posted on the progress. Good luck!!
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Best practice for writing browser detector?

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Is this a best-practice method for doing browser detection? I would assume that it would have a better performance than having an actual browser detection bean that derives the browser OS name directly from HttpServletRequest.getUserAgent() itself, however, wouldn't it be not as accurate as "direct from the source"?
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Phil_The_Lifeless_Programmer wrote:
I am looking into an old bean that was written several years ago that was supposed to perform a browser detection, however, its function appears solely to look for a regular expression pattern inside a String that is supposed to represent HttpServletRequest.getUserAgent(), however, it never references the request object; it "blindly" assumes it receives a String that looks like a user-agent string.
Is this a best-practice method for doing browser detection? I would assume that it would have a better performance than having an actual browser detection bean that derives the browser OS name directly from HttpServletRequest.getUserAgent() itself, however, wouldn't it be not as accurate as "direct from the source"?
ThanksI really don't understand you. There is no such method as getUserAgent() in the HttpServletRequest object, as mentioned before. I also really don't understand the performance and accuracy concern.
But anyway, I would after all just say, keep in mind that clients can change/make/spoof request headers the way they want. Use the user-agent information for statistics only and don't let your code logic depend (that much) on it, that would also make no sense in the server side which is supposed to be completely client independent. It's only useful in the client side scripting language Javascript (because it have to take account with browser proprietary API's and browser specific behaviours) and there are much better and reliable ways to do it in Javascript.

Best Practices for ASA 5500 Device Monitoring

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Hi James,
You probably won't be able to find any all-encompassing documentation for these types of best practices that cover all scenarios. The better method would be to define exactly what items you'd like to monitor and we can provide some guidance on how to best get that working for you.
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Best Practice for Extracting a Single Value from Oracle Table

I'm using Oracle Database 11g Release 11.2.0.3.0.
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Yes, I could create a nested block with EXCEPTION section, etc., but that seems clunky for what seems to be a very simple task.
I've also seen this handled like this:
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But this still seems like killing an ant with a sledge hammer.
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Do not design in order to avoid exceptions. Do not code in order to avoid exceptions.
Exceptions are good. Damn good. As it allows you to catch an unexpected process branch, where execution did not go as planned and coded.
Trying to avoid exceptions is just plain bloody stupid.
As for you specific problem. When the SQL fails to find a row and a value to return, what then? This is unexpected - if you did not want a value, you would not have coded the SQL to find a value. So the SQL not finding a value is an exception to what you intend with your code. And you need to decide what to do with that exception.
How to implement it. The #1 rule in software engineering - modularisation.
E.g.
create or replace function FindSomething( name varchar2 ) return foo.col1%type is
id foo.col1%type;
begin
select col1 into id from foo where col2 = upper(name);
return( id );
exception when NOT_FOUND then
return( null );
end;
And that is your problem. Modularisation. You are not considering it.
And not the only problem mind you. Seems like your keyboard has a stuck capslock key. Writing code in all uppercase is just as bloody silly as trying to avoid exceptions.

Best practice for setting or detecting screen size?

Hi All,
Trying to determine a best practice for setting or detecting the screen size. For playbook and iOS, I can set them. But for Android, the number of devices is too large so I'd rather detect. My first choice is to use the stage.stageHeight and stage.stageWidth. This works fine if I set my stage properties with standard meta data:
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<initialWindow>
<aspectRatio>landscape</aspectRatio>
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<fullScreen>true</fullScreen>
</initialWindow>
Then the stage.stageHeight and stage.stageWidth are not the correct numbers when my main class is added to the stage. Sometime after the main class is added to the stage, then those numbers are fine. Is there an event I can wait for to know that the stage.stageHeight and stage.stageWidth are correct?
Thanks in advance!

Hi Lee,
Thanks for the quick response! However, for some reason the heightPercent & widthPercent metadata tags are not working as expected for me.
I have a wrapper class that I target for compiling, WagErgApplePhone.as where I've got my metadata
[SWF(heightPercent="100%", widthPercent="100%", frameRate="64", backgroundColor="#010101")]
sets some stage properties
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var main:Main = new Main();
addChild(main);
my main class constructor even waits for the stage
public function Main(){
if (stage) init();
else addEventListener(Event.ADDED_TO_STAGE, init);
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In the Begining it's Flat Files - Best Practice for Getting Flat File Data

I probably should have posed this question here before I delved into writing Java to get data for reports, but better late than never.
Our ERP is written in COBOL. We have a third party ODBC which allows us to access data using a version of SQL. I have several Java sources compiled in my database that access the data and return something relevant. The Java sources are written in a procedural style rather than taking advantage of object oriented programming with attributes and methods.
Now that I am becoming more comfortable with the Java language, I would greatly appreciate any feedback as to best practices for incorporating Java into my database.
My guess is that it would be helpful to model the ERP "tables" with Java classes that would have attributes, which correspond to the fields, and methods to return the attributes in an appropriate way. Does that sound reasonable? If so, is there a way to automate the task of modeling the tables? If not reasonable, what would you recommend?
Thanks,
Gregory

Brother wrote:
I probably should have posed this question here before I delved into writing Java to get data for reports, but better late than never.
Our ERP is written in COBOL. We have a third party ODBC which allows us to access data using a version of SQL. I have several Java sources compiled in my database that access the data and return something relevant. The Java sources are written in a procedural style rather than taking advantage of object oriented programming with attributes and methods.
OO is a choice not a mandate. Using Java in a procedural way is certainly not ideal but given that it is existing code I would look more into whether is well written procedural code rather than looking at the lack of OO.
Now that I am becoming more comfortable with the Java language, I would greatly appreciate any feedback as to best practices for incorporating Java into my database.
My guess is that it would be helpful to model the ERP "tables" with Java classes that would have attributes, which correspond to the fields, and methods to return the attributes in an appropriate way. Does that sound reasonable? If so, is there a way to automate the task of modeling the tables? If not reasonable, what would you recommend?Normally you create a data model driven by business need. You then implement using whatever means seem expedient in terms of other business constraints to closely model that data model.
It is often the case that there is a strong correlation between data models and tables but certainly in my experience it is rare when there are not other needs driven by the data model (such as how foreign keys and link tables are implemented and used.)

Best practice for including additional DLLs/data files with plug-in

Hi,
Let's say I'm writing a plug-in which calls code in additional DLLs, and I want to ship these DLLs as part of the plug-in. I'd like to know what is considered "best practice" in terms of whether this is ok (assuming of course that the un-installer is set up to remove them correctly), and if so, where is the best place to put the DLLs.
Is it considered ok at all to ship additional DLLs, or should I try and statically link everything?
If it's ok to ship additional DLLs, should I install them in the same folder as the plug-in DLL (e.g. the .8BF or whatever), in a subfolder of the plug-in folder or somewhere else?
(I have the same question about shipping additional files too, such as data or resource files.)
Thanks
-Matthew

Brother wrote:
I probably should have posed this question here before I delved into writing Java to get data for reports, but better late than never.
Our ERP is written in COBOL. We have a third party ODBC which allows us to access data using a version of SQL. I have several Java sources compiled in my database that access the data and return something relevant. The Java sources are written in a procedural style rather than taking advantage of object oriented programming with attributes and methods.
OO is a choice not a mandate. Using Java in a procedural way is certainly not ideal but given that it is existing code I would look more into whether is well written procedural code rather than looking at the lack of OO.
Now that I am becoming more comfortable with the Java language, I would greatly appreciate any feedback as to best practices for incorporating Java into my database.
My guess is that it would be helpful to model the ERP "tables" with Java classes that would have attributes, which correspond to the fields, and methods to return the attributes in an appropriate way. Does that sound reasonable? If so, is there a way to automate the task of modeling the tables? If not reasonable, what would you recommend?Normally you create a data model driven by business need. You then implement using whatever means seem expedient in terms of other business constraints to closely model that data model.
It is often the case that there is a strong correlation between data models and tables but certainly in my experience it is rare when there are not other needs driven by the data model (such as how foreign keys and link tables are implemented and used.)

SAP HCM Implementation: Best Practice for configuring

Hi,
This is my first independent project of HCM implementation. I have just started the system configuration. Done with setting up the PA, PSA, EG and ESG. Assigned to CC. At this stage, I have a very basic question which is, what is the best practice for the next steps of configuration. What do I go to next, step up the OM in the SAP EasyAccess Menu? How should I go from here?
Would really appreciate some explanatory assistance.
Thanks in advance.
Papri
Edited by: papri_rc on Jul 8, 2011 6:40 AM

Its all depends on business requirement
at starting as i advised you review your BBP , make sure you configure everything
for your reference iam giving the following data for OM and PA config..
as part of OM
1.     depict client org structure using simple maintenance , with this you can create large structures in less time(while doing org structure be careful and refer BBP)
2.     maintain integration switches
3.     maintain plan version
4.     maintain number ranges
Configuration for PA
HR Enterprise /PersonnelStructure
u2022     Personnel Areas
u2022     Personnel Sub Areas
u2022     Employee Group
u2022     Employee Sub Group
u2022     Assignment of Personnel Area to Company Code
u2022     Assignment of Employee Sub Group to Employee Group
Basic Settings
1.     Maintain Number Range Intervals for Personnel Numbers
2.     Determine defaults for number ranges
Personal Data
1.     Create Forms of Address
2.     Create Marital Status
Family
1.     Defined Possible Family Members
Addresses
1.     Create Address Type
Communication
1.     Create Communication Types
Contractual and Corporate Agreements
1.     Define Contract Types
2.     Determine periods of notice
Employee Qualifications
1.     Create education establishment types
2.     Define Education Training
3.     Create educational Certificates
4.     Create branches of study
5.     Determine permissible certificates for education type
Infotype Menus
1.     User Group Dependency on Menus and Info groups
2.     Infotype Menu
3.     Determine choice of Infotype menus
4.     Infotype Menus
Actions
1.     User Group Dependency on Menus and Infogroups
2.     Info Group
3.     Personnel Action Types
4.     Create reasons for personnel actions
5.     Change Action Menu
*Developments(ABAPconsultant will do)     *Field Enhancements     (any field enhancements in infotypes)
Customer Infotypes     -Develop any customer infotypes if required for the business from 9000 series
Edited by: Piscian . on Jul 8, 2011 9:08 AM

Best Practices for zVM/SLES10/zDB2 environment for dialog instances.

Hi, I am a zSeries system programmer who has just completed an IBM led Proof of Concept which demonstrated the viability of running SAP instances on SUSE SLES10 Linux booted in zVM guests and accessing zDB2 data via hipersockets. Before we build a Linux infrastructure using the 62 IFLs we just procured, we are wondering if any best practices for this environment have been developed as an OSS note or something else by SAP.    Below you will find an email which was sent and responded to by IBM and Novell on these topics...
"As you may know, Home Depot has embarked on an IBM led proof of concept using SUSE SLES10 running in zVM guests on IBM zSeries hardware to host SAP server instances. The Home Depot IT organization is currently in the midst of a large scale push to modernize our merchandising and people systems on SAP platforms. The zVM/SUSE/SAP POC is part of that effort, as is a parallel POC of an Intel Blade/Red Hat/SAP platform. For our production financial systems we now use a pSeries/AIX/SAP platform.
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      I am writing in the hope that you can direct us to technical resources at IBM/Novell/SAP who may be able to field a few questions that have arisen. In our discussions about optimization of the zVM/SUSE/SAP platform, we wondered if any wisdom about the appropriateness of and support for using zVM capabilities to virtualize SAP has ever been developed or any best practices drafted. Attached you will find an IBM Redbook and a PowerPoint presentation which describes the use of the zVM discontiguous shared segments and the zVM named saved system features for the sharing of reentrant code and other elements of Linux and its applications, thereby conserving storage and disk resources allocated to guest machines.   The specific question of the hour is, can any SAP code be handled similarly? Have specific SAP elements eligible for this treatment been identified?
      I've searched the SUSE Knowledgebase for articles on this topic to no avail. Any similar techniques that might help us reduce the total cost of ownership of a zVM/SUSE/SAP platform as we compare it to Intel Blade/Red Hat/SAP and pSeries/AIX/SAP platforms are of great interest as we approach the end of our POC. Can you help?
      Greg McKelvey is a Client I/T Architect at IBM. He found the attached IBM documents and could give a fuller account of our POC. Pat Downs, IBM zSeries IT Architect, has also worked to guide our POC. Akshay Rao, IBM Systems IT Specialist - Linux | Virtualization | SOA, is acting as project manager for the POC. Jim Hawkins is the Home Depot Architect directing the POC. I've CC:ed their email addresses. I am sure they would be pleased to hear from you if there are the likely questions about what the heck I am asking about here. And while writing, I thought of yet another question that I hoping somebody at SAP might weigh in on; are there any performance or operational benefits to using Linux LVM to apportion disk to filesystems vs. using zVM to create appropriately sized minidisks for filesystems without LVM getting involved?"
As you can see, implementation questions need to be resolved. We have heard from Novell that the SLES10 Kernel and other SUSE artifacts can reside in memory and be shared by multiple operating system images. Does SAP support this configuration? Also, has SAP identified SAP components which are eligible for similar treatment? We would like to make sure that any decisions we make about the SAP platforms we are building will be supportable. Any help you can provide will be greatly appreciated. I will supply the documents referenced above if they are not known to any answerer. Thanks, Al Brasher 770-433-8211 x11895 [email protected]

Hello AL ,
first, let me welcome you on board, I am sure you won't be disapointed with your choice to run SAP on ZOS.
as for your questions,
it wan't easy to find them in this long post , so i suggest you take the time to write a short summary that contains a very short list of questions.
as for answers.
here are a few usefull sources of information :
1. the sap on db2 for Z/os sdn page :
SAP on DB2 for z/OS
in it you can find 2 relevant docs :
a. best practices for ...
b. database administration for db2 udb for z/os .
this second publication is excellent , apart from db2 specific info , it contains information on all the components of the sap on db2 for z/os like zlinux,z/vm and so on ...
2. I can see that you are already familiar with the ibm redbooks , but it seems that you haven't taken the time to get the most out of that resource.
from you post it is clear that you have found one usefull publication , but I know there are several.
3. a few months ago I wrote a short post on a similar subject ,
I'm sure its not exactly what you are looking for at this moment , but its a good start , and with some patience you may be able to get some answers.
here's a link
http://blogs.ittoolbox.com/sap/db2/archives/index-of-free-documentation-on-sap-db2-administration-14245
good luck.
omer brandis.

Best Practices For Household IOS's/Apple IDs

Greetings:
I've been searching support for best practices for sharing primarily apps, music and video among multple iOS's/Apple IDs. If there is a specific article please point me to it.
Here is my situation:
We currently have 3 iPads (2-kids, 1-dad) in the household and one iTunes account on a win computer. I previously had all iPads on single Apple ID/credit card and controlled the kids' downloads thru the Apple ID password that I kept secret. As the kids have grown older, I found myself constantly entering my password as the kids increased there interest in music/apps/video. I like this approach because all content was shared...I dislike because I was constantly asked to input password for all downloads.
So, I recently set up an individual account for them with the allowance feature at iTunes that allows them to download content on their own (I set restrictions on their iPads). Now I have 3 Apple IDs under one household.
My questions:
With the 3 Apple IDs, what is the best way to share apps,music, videos among myself and the kids? Is it multiple accounts on the computer and some sort of sharing?
Thanks in advance...

Hi Bonesaw1962,
We've had our staff and students run iOS updates OTA via Settings -> Software Update. In the past, we put a DNS block on Apple's update servers to prevent users from updating iOS (like last fall when iOS 7 was first released). By blocking mesu.apple com, the iPads weren't able to check for or install any iOS software updates. We waited until iOS 7.0.3 was released before we removed the block to mesu.apple.com at which point we told users if they wanted to update to iOS 7 they could do so OTA. We used our MDM to run reports periodically to see how many people updated to iOS 7 and how many stayed on iOS 6. As time went on, just about everyone updated on their own.
If you go this route (depending on the number of devices you have), you may want to take a look at Caching Server 2 to help with the network load https://www.apple.com/osx/server/features/#caching-server . From Apple's website, "When a user on your network downloads new software from Apple, a copy is automatically stored on your server. So the next time other users on your network update or download that same software, they actually access it from inside the network."
I wish there was a way for MDMs to manage iOS updates, but unfortunately Apple hasn't made this feature available to MDM providers. I've given this feedback to our Apple SE, but haven't heard if it is being considered or not. Keeping fingers crossed.
Hope this helps. Let us know what you decide on and keep us posted on the progress. Good luck!!
~Joe

Best practice for integrating a 3 point metro-e in to our network.

Hello,
We have just started to integrate a new 3 point metro-e wan connection to our main school office. We are moving from point to point T-1?s to 10 MB metro-e. At the main office we have a 50 MB going out to 3 other sites at 10 MB each. For two of the remote sites we have purchase new routers ? which should be straight up configurations. We are having an issue connecting the main office with the 3rd site.
At the main office we have a Catalyst 4006 and at the 3rd site we are trying to connect to a catalyst 4503.
I have attached configurations from both the main office and 3rd remote site as well as a basic diagram of how everything physically connects. These configurations are not working ? we feel that it is a gateway type problem ? but have reached no great solutions. We have tried posting to a different forum ? but so far unable to find the a solution that helps.
The problem I am having is on the remote side. I can reach the remote catalyst from the main site, but I cannot reach the devices on the other side of the remote catalyst however the remote catalyst can see devices on it's side as well as devices at the main site.
We have also tried trunking the ports on both sides and using encapsulation dot10q ? but when we do this the 3rd site is able to pick up a DHCP address from the main office ? and we do not feel that is correct. But it works ? is this not causing a large broad cast domain?
If you have any questions or need further configuration data please let me know.
The previous connection was a T1 connection through a 2620 but this is not compatible with metro-e so we are trying to connect directly through the catalysts.
The other two connection points will be connecting through cisco routers that are compatible with metro-e so i don't think I'll have problems with those sites.
Any and all help is greatly welcome ? as this is our 1st metro e project and want to make sure we are following best practices for this type of integration.
Thank you in advance for your help.
Jeff

Jeff, form your config it seems you main site and remote site are not adjacent in eigrp.
Try adding a network statement for the 171.0 link and form a neighbourship between main and remote site for the L3 routing to work.
Upon this you should be able to reach the remote site hosts.
HTH-Cheers,
Swaroop

Best Practices for Defining NDS Java Projects...

We are doing a Proof of Concept on using NDS to develop non-SAP Java applications. We are attempting to determine if we can replace our current Java development tools with NDS/WAS.
We are struggling with SAP's terminology and "plumbing" for setting up/defining Java projects. For example, what is and when do you define Tracks, Software Components, Development Components, etc. All of these terms are totally foreign to us and do not relate to our current Java environment (at least not that we can see). We are also struggling with how the DTR and activities tie in to those components.
If any one has defined best practices for setting up Java projects or has struggled with and overcome these same issues, please provide us with some guidance. This is a very frustrating and time-consuming issue for us.
Thank you!!

Hi Peggy,
In Component Model we divide software projects into small components.Components can use other components in well defined manner.
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A development component can be defined as a frame shared by a number of objects, which are part of the software.
Software components combine components (DCs) to larger units for delivery and deployment.
A track comprises configurations and runtime systems required for developing software component versions.It ensures stable states of deliverables used by subsequent tracks.
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You can also find lot of support in SDN for the above concepts with tutorials.
Refer this Link for a overview on Java development Infrastructure(JDI)
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/webas/java/java development infrastructure jdi overview.pdf
To understand further
Working with Net Weaver Development Infrastructure :
http://help.sap.com/saphelp_nw04/helpdata/en/03/f6bc3d42f46c33e10000000a11405a/content.htm
In the above link you can find all the concepts clearly explained.You can also find the required tutorials for development.
Regards,
Vijith

Networking "best practice" for setting up a farm

Hi all.
We would like to set an OracleVM farm, and I have a question about "best practice" for
configuring the network. Some background:
- The hardware I have is comprised of machines with 4 gig-eth NICs each.
- The storage will be coming primarily from a backend NAS appliance (Netapp, FWIW).
- We have already allocated a separate VLAN for management.
- We would like to have HA capable VMs using OCFS2 (on top of NFS.)
I'm trying to decide between 2 possible configurations. The first would keep physical separation
between the mgt/storage networks and the DomU networks. The second would just trunk
everything together across all 4 NICs, something like:
Config 1:
- eth0 - management/cluster-interconnect
- eth1 - storage
- eth2/eth3 => bond0 - 8021q trunked, bonded interfaces for DomUs
Config 2:
- eth0/1/2/3 => bond0
Do people have experience or recommendation about the best configuration?
I'm attracted to the first option (perhaps naively) because CI/storage would benefit
from dedicated bandwidth and this configuration might also be more secure.
Regards,
Robert.

user1070509 wrote:
Option #4 (802.3ad) looks promising, but I don't know if this can be made to work across
separate switches.It can, if your switches support cross-switch trunking. Essentially, 802.3ad (also known as LACP or EtherChannel on Cisco devices) requires your switch to be properly configured to allow trunking across the interfaces used for the bond. I know that the high-end Cisco and Juniper switches do support LACP across multiple switches. In the Cisco world, this is called MEC (Multichassis EtherChannel).
If you're using low-end commodity-grade gear, you'll probably need to use active/passive bonds if you want to span switches. Alternatively, you could use one of the balance algorithms for some bandwitch increase. You'd have to run your own testing to determine which algorithm is best suited for your workload.
The Linux Foundation's Net:Bonding article has some great information on bonding in general, particularly on the various bonding methods for high availability:
http://www.linuxfoundation.org/en/Net:Bonding

What is the best practice for changing view states?

I have a component with two Pie Charts that display
percentages at two specific dates (think start and end values).
But, I have three views: Start Value only, End Value only, or show
Both. I am using a ToggleButtonBar to control the display. What is
the best practice for changing this kind of view state? Right now
(since this code was inherited), the view states are changed in an
ActionScript function which sets the visible and includeInLayout
properties on each Pie Chart based on the selectedIndex of the
ToggleButtonBar, but, this just doesn't seem like the best way to
do this - not very dynamic. I'd like to be able to change the state
based on the name of the selectedItem, in case the order of the
ToggleButtons changes, and since I am storing the name of the
selectedItem for future reference.
Would using States be better? If so, what would be the best
way to implement this?
Thanks.

I would stick with non-states, as I have always heard that
states are more for smaller components that need to change under
certain conditions, like a login screen that changes if the user
needs to register.
That said, if the UI of what you are dealing with is not
overly complex, and if it will not become overly complex, maybe
states is the way to go.
Looking at your code, I don't think you'll save much in terms
of lines of code.

Best Practice for writing device independent DAQ code

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