Flex vs Flash Disclaimer
Here I will be talking about Adobe Flex, which many confuse with Adobe Flash. Flash is a tool to design annoying banner ads. Flex is the powerful environment (ActionScript language+rich set or visual components+virtual machine) where one can build, for example http://examples.adobe.com/flex3/devnet/dashboard/main.html or http://examples.adobe.com/flex3/devnet/networkmonitor/main.html.
And, of course the fact that Adobe tried to rename Flex back to Flash not long ago doesn't help to avoid the confusion...
And, of course the fact that Adobe tried to rename Flex back to Flash not long ago doesn't help to avoid the confusion...
as-q Library
as-q is an ActionScript library that allows Adobe Flex applications to interact with kdb+ (like c.java or c.cs do). The idea behind this project is to be able to leverage UI capabilities of Flex in order to visualize historical and real time kdb+ data.
Calling q from ActionScript is very simple:
var q:c=new c(host, port, user);
q.ksync("select time, totvol, price from trade ...", this, "trades");
When response from kdb+ arrives, "trades" setter is called (note that Flex is an event-driven asynchronous environment):
public function set trades(dict:Object):void {...}
Asynchronous call (response ignored):
q.kasync("x:1");
Below are two sample applications that use as-q library. I am also attaching binaries for each application. Binaries are not signed, so you may receive an "unknown publisher" certificate warning. You may also get a prompt to install Adobe AIR runtime, which you need to run these applications.
I will be releasing the source code for both application and the library soon.
If you find this project interesting, feel free to drop me a line at [email protected] (Alex Boudarov). Any feedback is welcome.
Calling q from ActionScript is very simple:
var q:c=new c(host, port, user);
q.ksync("select time, totvol, price from trade ...", this, "trades");
When response from kdb+ arrives, "trades" setter is called (note that Flex is an event-driven asynchronous environment):
public function set trades(dict:Object):void {...}
Asynchronous call (response ignored):
q.kasync("x:1");
Below are two sample applications that use as-q library. I am also attaching binaries for each application. Binaries are not signed, so you may receive an "unknown publisher" certificate warning. You may also get a prompt to install Adobe AIR runtime, which you need to run these applications.
I will be releasing the source code for both application and the library soon.
If you find this project interesting, feel free to drop me a line at [email protected] (Alex Boudarov). Any feedback is welcome.
QUI
QUI is a q learning tool that uses as-q library. It is a basic q shell combined with q idioms' code. Log at the bottom shows IPC messages. Code edit view is separate from results view, CTRL+SHIFT execute current line or selection from code view.
TAQ
Trade and quote application is another use case for as-q library. It allows user to drill down into taq database (hope it works with your table schema). I was amazed by responsiveness of this app, which shouldn't come as a surprise considering that there is nothing between Flex and kdb+ except TCP pipe sending raw data. No message queues, no application servers, no frameworks - just data:)
In order to run applications you will need to have Adobe AIR runtime installed: http://get.adobe.com/air
Once you have AIR runtime installed, click on qui.air or taq.air to download and install it
NOTE that if you have originally installed application from *.exe package, then autoupdate feature doesn't work and you will get "An unexpected error occurred. Error# 16828" when trying to autoupdate to new version. In this case, click on the *.air version below and install the app. After that there won't be any issues autoupdating the app.
Once you have AIR runtime installed, click on qui.air or taq.air to download and install it
NOTE that if you have originally installed application from *.exe package, then autoupdate feature doesn't work and you will get "An unexpected error occurred. Error# 16828" when trying to autoupdate to new version. In this case, click on the *.air version below and install the app. After that there won't be any issues autoupdating the app.
| taq-update.xml |
| taq.air |
| qui-update.xml |
| qui.air |
