Re: [SCXML] getting set datats in the datamodel

[Rahul Akolkar]

On Tue, Mar 31, 2009 at 7:46 AM, Linda Erlenhov
linda.erlen...@gmail.com wrote:
 Hello again!

 I have a problem with my datamodel. Or rather the fetching of datas that are
 used in the datamodel.
 I have my editor for building statemachines graphical, this is then
 translated into a corresponding SCXML document that then is run normally
 with Apache commons. The person that uses the editor shoul amongst other
 things be able select if she/he has want´s some data to be set (integers or
 strings) when entering states.
 The GUI that communicates with the machine does this via an interface wich
 is the thing I´m writing now. The GUI can send subscriptions requests for
 data wich basically means that it wants to subscribe certain data and wants
 the interface to send it when the data is changed.
 How I solved the part of saving checking the data is somewhat irrelevant,
 the problem is when I want to fetch the data that is saved. Since the model
 doesn´t tell when data has changed I check whenever entering a state
 (onEntry Listner) but where do I check this.
 Where is this, the data, saved?

snip/

This still is all quite vague to me -- for example, not clear where
you put the data in the first place.

If you want to listen to data changes, listening to state changes may
not be the way to proceed (so I wouldn't use SCXMLListener for this
purpose). I can think of multiple potential options:

 * Avoid the need for any data synchronization / subscriptions
altogether - Back the state machine's root context with the actual
data store

 * Declaratively add transitions guarded on specific *.change events
- Has the benefit of capturing the associated actions in the SCXML
document itself (use the appropriate executable content on transition)

 * Use a custom Context implementation - This will allow you to
intercept data changes, à la pointcut at
oacs.Context#set(String,Object), and get notifications that way

-Rahul


 best regards
 //Linda


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commons logging + Jdk14Logger

[sagun shakya]

hi,

I'm trying to use commons logging with the the Jdk14Logger  
implementation. I have it working to some extent but I'm hitting one  
issue that I think is due to an incorrect setting in my properties  
file. So
I know my application is using  
org.apache.commons.logging.impl.Jdk14Logger implementation because

when I run my application as:
java -Djava.util.logging.config.file=logging.properties -cp target/ 
foo.jar com.my.package.bar option


I see the logging configuration for Jdk14 working as I configure.

Both the commons-logging.properties and logging.properties are  
under src/main/resources so they are in the classpath.


In  the commons-logging.properties file I have:

org 
.apache.commons.logging.Log=org.apache.commons.logging.impl.Jdk14Logger

logger= org.apache.commons.logging.impl.Jdk14Logger
logger.configuration.name=java.util.logging.config.file
logger.configuration.value=logging.properties

The last 3 lines is not correct, I believe, but I haven't been able to  
figure what it should be.


Is it possible to configure commons-logging.properties to look at the  
the properties and not read the non default JRE/lib/logging.properties  
file without having to pass it in with command line options?


thanks,

Sagun


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[commons-exec] How to exec scp from cygwin?

[Michael K. Craghead]

Looking at the tutorial for exec it doesn't look to difficult to use, but I'm 
not sure how to go about setting up an exec for an scp command that runs inside 
of cygwin. Can someone point me in the right direction? Thanks.
 Michael K. Craghead