embedlets-developer

[Embedlets-dev] Re: Releases

[Andrzej J. T. <an...@ch...>]

Ted asks:

> Well, the Embedlets sourceforge page indicates that the project has not
> released any files to users yet.  So, are you saying that we should offically
> release the embedlet_004.zip, outpost_004.zip and outhouse_002.zip files using
> the standard sourceforge site release mechanism?

Sure....if you want to be "official" about it.  I see no harm in doing so.  It will make it easier for 
non-developer types to find and familiarize themselves with work to date.

...Andrzej

Chaeron Corporation
http://www.chaeron.com

[Embedlets-dev] RMI for j2me

[Brill P. <bri...@ro...>]

http://wireless.java.sun.com/personal/ttips/ixc/

Hmm... might be able to adapt this...

- Brill Pappin
  Rogue Robotics
  www.roguerobotics.com

Re: [Embedlets-dev] RMI for j2me

[Ted K. <tk...@ya...>]

Brill said,

> http://wireless.java.sun.com/personal/ttips/ixc/
> 
> Hmm... might be able to adapt this...

I've done some XLet programming for iTV applications:

http://www.javadevices.org/dtcourse

and what I am thinking is that XLets could benefit greatly by using Embedlets. 
To me the Embedlet event model appears to be much better than any other
inter-XLet communications mechanism that have been developed to date.

Ted

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[Embedlets-dev] Persistence Check in

[Christopher S. <cs...@oo...>]

After taking some time to feed the family I put some work into the
persistence model.

I have a working  PersistentContainer (OutpostContainer subclass) that gets
loaded from an XML file, creates the services defined in the XML file and
then starts up.


I will be following up with some mode documentation and sample components,
but wanted to get it archived at a plateau and visible for feedback so I
checked it in under the 'Persistence tag'. Please check it out and give me
some feedback good or bad.

This required a number of new interfaces and classes as you might of
expected. I made every effort leave the existing classes intact and only had
to change a couple of exposure levels to public in order to subclass the
various objects and add a few 'setter' methods.

Andrzej please forgive the minor trespasses.

The core concept is the persistence.Persistent and persistence.Properties
interfaces that allow classes to be saved and restored from a variety of
persistent or transient stores. In this case the store is an XML file which
is controlled by the XMLProperties class and XMLPersistenceManager. In a
remotely controlled model the 'store' is a TCP/IP stream. I am converting an
example of this from the OPC components code.

Another important class is the PersistentCollection that provides
aggregation for other Persistent objects, thus supporting the object tree.

References between classes are defined by the href="Identity" attribute

The first cut applies a persistence interface to the Context objects that
Andrzej created. This is done by sub classing the particular Context class
as org.outpost.persistence.PersistentXxxxxContext and implementing the
org.embedlet.persistence.Persistent interface to support loading the
contexts.

I used a small class (org.outpost.persistence.xml.Launcher) to start things
off and create the Container and its services from the persistence source at
run time. This will allow us to use several launch modes and persistence
media with the same container rather than requiring a different container
for each.

To try things out:

1. Update using the tag Persistent
2. Copy the org/outpost/persistence/xml/kxml-min.jar to the outpost/lib
folder. This the parser that I used.
2. Recompile embedlets and outpost using the make.compile
4. Run:
	java -cp
yourClasspath -DConfigFile=YourSrcFolder\org\outpost\persistence\config.xml
org.embedlet.persistence.xml.Launcher

5. It should load and run the container and its services.

I have created three sample components:  a timer, a toggle and a counter.
These will be started with the container on the next go around.

Chris

Christopher Smith
OopScope, LLC.
www.oopscope.com
cs...@oo...
805-276-0598

Re: [Embedlets-dev] Persistence Check in

[Ted K. <tk...@ya...>]

Chris,

> After taking some time to feed the family I put some work into the
> persistence model.

I had a number of things I needed to attend to also but I am almost out from
under them now and ready to switch back to Embedlets again.


> I have a working  PersistentContainer (OutpostContainer subclass) that gets
> loaded from an XML file, creates the services defined in the XML file and
> then starts up. [snip]

This is great!  I will checkout your additions this weekend and start playing
with them.

Ted

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Re: [Embedlets-dev] Persistence Check in

[Ted K. <tk...@ya...>]

Chris,

Ok, I am working on trying out your persistence code.


> To try things out:
> 
> 1. Update using the tag Persistent

I just when ahead did a fresh checkout of 'embedlet' and 'outpost'.


> 2. Copy the org/outpost/persistence/xml/kxml-min.jar to the outpost/lib
> folder. This the parser that I used.

No problems here.


> 2. Recompile embedlets and outpost using the make.compile

Did you mean 'ant compile' here?  I did this and I received the following
compiler errors:

<dump>

[tkosan@localhost outpost]$ ant compile
Buildfile: build.xml

init:

compile:
    [javac] Compiling 33 source files to
/home/tkosan/embedlets/chris/outpost/build/classes
    [javac]
/home/tkosan/embedlets/chris/outpost/src/org/outpost/components/digital/Counter.java:74:
cannot resolve symbol
    [javac] symbol  : class BooleanEvent
    [javac] location: package event
    [javac] import org.outpost.event.BooleanEvent;
    [javac]                          ^
    [javac]
/home/tkosan/embedlets/chris/outpost/src/org/outpost/components/digital/Counter.java:157:
cannot resolve symbol
    [javac] symbol  : class BooleanEvent
    [javac] location: class org.outpost.components.digital.Counter
    [javac]                 BooleanEvent i = (BooleanEvent) event;
    [javac]                 ^
    [javac]
/home/tkosan/embedlets/chris/outpost/src/org/outpost/components/digital/Counter.java:157:
cannot resolve symbol
    [javac] symbol  : class BooleanEvent
    [javac] location: class org.outpost.components.digital.Counter
    [javac]                 BooleanEvent i = (BooleanEvent) event;
    [javac]                                   ^
    [javac] 3 errors

BUILD FAILED

</dump>


Its late and I am a bit 'fuzzy brained' but is BooleanEvent a class that you
added?


Ted

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RE: [Embedlets-dev] Persistence Check in

[Christopher S. <cs...@oo...>]

Ted, 

I have been away for most of last week and will take a look at this today. 

Chris
> 
> 
> Topic tags:[ARCH][JAPL][WIRING][DOCS][MGMT][STRATEGY][NEWBIE]
> _______________________________________________
> 
> Chris,
> 
> Ok, I am working on trying out your persistence code.
> 
> 
> > To try things out:
> > 
> > 1. Update using the tag Persistent
> 
> I just when ahead did a fresh checkout of 'embedlet' and 'outpost'.
> 
> 
> > 2. Copy the org/outpost/persistence/xml/kxml-min.jar to the outpost/lib
> > folder. This the parser that I used.
> 
> No problems here.
> 
> 
> > 2. Recompile embedlets and outpost using the make.compile
> 
> Did you mean 'ant compile' here?  I did this and I received the following
> compiler errors:
> 
> <dump>
> 
> [tkosan@localhost outpost]$ ant compile
> Buildfile: build.xml
> 
> init:
> 
> compile:
>     [javac] Compiling 33 source files to
> /home/tkosan/embedlets/chris/outpost/build/classes
>     [javac]
> /home/tkosan/embedlets/chris/outpost/src/org/outpost/components/di
> gital/Counter.java:74:
> cannot resolve symbol
>     [javac] symbol  : class BooleanEvent
>     [javac] location: package event
>     [javac] import org.outpost.event.BooleanEvent;
>     [javac]                          ^
>     [javac]
> /home/tkosan/embedlets/chris/outpost/src/org/outpost/components/di
> gital/Counter.java:157:
> cannot resolve symbol
>     [javac] symbol  : class BooleanEvent
>     [javac] location: class org.outpost.components.digital.Counter
>     [javac]                 BooleanEvent i = (BooleanEvent) event;
>     [javac]                 ^
>     [javac]
> /home/tkosan/embedlets/chris/outpost/src/org/outpost/components/di
> gital/Counter.java:157:
> cannot resolve symbol
>     [javac] symbol  : class BooleanEvent
>     [javac] location: class org.outpost.components.digital.Counter
>     [javac]                 BooleanEvent i = (BooleanEvent) event;
>     [javac]                                   ^
>     [javac] 3 errors
> 
> BUILD FAILED
> 
> </dump>
> 
> 
> Its late and I am a bit 'fuzzy brained' but is BooleanEvent a 
> class that you
> added?
> 
> 
> Ted
> 
> __________________________________
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> 
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> 

RE: [Embedlets-dev] Persistence Check in

[Christopher S. <cs...@oo...>]

Try it now - I missed the new event classes on checkin. 

Christopher Smith
OopScope, LLC.
www.oopscope.com
cs...@oo...
805-276-0598

> 
> Topic tags:[ARCH][JAPL][WIRING][DOCS][MGMT][STRATEGY][NEWBIE]
> _______________________________________________
> 
> Chris,
> 
> Ok, I am working on trying out your persistence code.
> 
> 
> > To try things out:
> > 
> > 1. Update using the tag Persistent
> 
> I just when ahead did a fresh checkout of 'embedlet' and 'outpost'.
> 
> 
> > 2. Copy the org/outpost/persistence/xml/kxml-min.jar to the outpost/lib
> > folder. This the parser that I used.
> 
> No problems here.
> 
> 
> > 2. Recompile embedlets and outpost using the make.compile
> 
> Did you mean 'ant compile' here?  I did this and I received the following
> compiler errors:
> 
> <dump>
> 
> [tkosan@localhost outpost]$ ant compile
> Buildfile: build.xml
> 
> init:
> 
> compile:
>     [javac] Compiling 33 source files to
> /home/tkosan/embedlets/chris/outpost/build/classes
>     [javac]
> /home/tkosan/embedlets/chris/outpost/src/org/outpost/components/di
> gital/Counter.java:74:
> cannot resolve symbol
>     [javac] symbol  : class BooleanEvent
>     [javac] location: package event
>     [javac] import org.outpost.event.BooleanEvent;
>     [javac]                          ^
>     [javac]
> /home/tkosan/embedlets/chris/outpost/src/org/outpost/components/di
> gital/Counter.java:157:
> cannot resolve symbol
>     [javac] symbol  : class BooleanEvent
>     [javac] location: class org.outpost.components.digital.Counter
>     [javac]                 BooleanEvent i = (BooleanEvent) event;
>     [javac]                 ^
>     [javac]
> /home/tkosan/embedlets/chris/outpost/src/org/outpost/components/di
> gital/Counter.java:157:
> cannot resolve symbol
>     [javac] symbol  : class BooleanEvent
>     [javac] location: class org.outpost.components.digital.Counter
>     [javac]                 BooleanEvent i = (BooleanEvent) event;
>     [javac]                                   ^
>     [javac] 3 errors
> 
> BUILD FAILED
> 
> </dump>
> 
> 
> Its late and I am a bit 'fuzzy brained' but is BooleanEvent a 
> class that you
> added?
> 
> 
> Ted
> 
> __________________________________
> Do you Yahoo!?
> The New Yahoo! Search - Faster. Easier. Bingo.
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> 
> 
> -------------------------------------------------------
> This sf.net email is sponsored by:ThinkGeek
> Welcome to geek heaven.
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> _______________________________________________
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> 

RE: [Embedlets-dev] Persistence Check in

[Ted K. <tk...@ya...>]

Chris,

Ok, getting closer.

Here is my latest attempt to run the persistence demo:

<shell-dump>
[tkosan@localhost outpost]$ java
-cp/home/tkosan/embedlets/chris/outpost/lib/emb
edlet.jar:/home/tkosan/embedlets/chris/outpost/lib/kxml-min.jar:/home/tkosan/embe
dlets/chris/outpost/build/classes
-DConfigFile=/home/tkosan/embedlets/chris/outpo
st/src/org/outpost/persistence/config.xml org.outpost.persistence.xml.Launcher

Error:
org.embedlet.lifecycle.LifecycleError: Component Create failed for:
outpost.Logging, org.embedlet.lifecycle.LifecycleException: Service Category
unknown for: outpost.Loggingorg.embedlet.lifecycle.LifecycleException:
Component Create failed for : outpost.Logging,
org.embedlet.lifecycle.LifecycleException: Service Category unknown for:
outpost.Logging

</shell-dump>

Evidently I need to figure out what a 'Service Category unknown' error is in
order to fix this but I will not have time until tomorrow. Almost there
though... 

Ted

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RE: [Embedlets-dev] Persistence Check in

[Christopher S. <cs...@oo...>]

I put in a day and a half on the Persistnce startup code. It is now
launching the container with the initial services, based on the definitons
in the config.xml file.

The config.xml now conforms to the PK_COMPONENT_XXX definitions and there
are no hard-coded property keys.

To try things out:

1. Update with the latest embedlets.embedlet and embedlet.outpost code from
cvs. Be sure to check the 'create missing directoris that exist in
respository' on
2. Build embedlet and outpost in that order using the all-clean target in
each build.xml.
4. From the embedlets\outpost folder run:
 java -cp
build\classes;lib\kxml-min.jar;.\lib\embedlet.jar -DConfigFile=.\src\org\out
post\persistence\config.xml org.outpost.persistence.xml.Launcher

5. It should load and run the container and its services.

I have created three sample components:  a timer, a toggle and a counter.
These will be started with the container on the next go around.


>
> Topic tags:[ARCH][JAPL][WIRING][DOCS][MGMT][STRATEGY][NEWBIE]
> _______________________________________________
>
> Chris,
>
> Ok, I am working on trying out your persistence code.
>
>
> > To try things out:
> >
> > 1. Update using the tag Persistent
>
> I just when ahead did a fresh checkout of 'embedlet' and 'outpost'.
>
>
> > 2. Copy the org/outpost/persistence/xml/kxml-min.jar to the outpost/lib
> > folder. This the parser that I used.
>
> No problems here.
>
>
> > 2. Recompile embedlets and outpost using the make.compile
>
> Did you mean 'ant compile' here?  I did this and I received the following
> compiler errors:
>
> <dump>
>
> [tkosan@localhost outpost]$ ant compile
> Buildfile: build.xml
>
> init:
>
> compile:
>     [javac] Compiling 33 source files to
> /home/tkosan/embedlets/chris/outpost/build/classes
>     [javac]
> /home/tkosan/embedlets/chris/outpost/src/org/outpost/components/di
> gital/Counter.java:74:
> cannot resolve symbol
>     [javac] symbol  : class BooleanEvent
>     [javac] location: package event
>     [javac] import org.outpost.event.BooleanEvent;
>     [javac]                          ^
>     [javac]
> /home/tkosan/embedlets/chris/outpost/src/org/outpost/components/di
> gital/Counter.java:157:
> cannot resolve symbol
>     [javac] symbol  : class BooleanEvent
>     [javac] location: class org.outpost.components.digital.Counter
>     [javac]                 BooleanEvent i = (BooleanEvent) event;
>     [javac]                 ^
>     [javac]
> /home/tkosan/embedlets/chris/outpost/src/org/outpost/components/di
> gital/Counter.java:157:
> cannot resolve symbol
>     [javac] symbol  : class BooleanEvent
>     [javac] location: class org.outpost.components.digital.Counter
>     [javac]                 BooleanEvent i = (BooleanEvent) event;
>     [javac]                                   ^
>     [javac] 3 errors
>
> BUILD FAILED
>
> </dump>
>
>
> Its late and I am a bit 'fuzzy brained' but is BooleanEvent a
> class that you
> added?
>
>
> Ted
>
> __________________________________
> Do you Yahoo!?
> The New Yahoo! Search - Faster. Easier. Bingo.
> http://search.yahoo.com
>
>
> -------------------------------------------------------
> This sf.net email is sponsored by:ThinkGeek
> Welcome to geek heaven.
> http://thinkgeek.com/sf
> _______________________________________________
> Embedlets-developer mailing list
> Emb...@li...
> https://lists.sourceforge.net/lists/listinfo/embedlets-developer
>

RE: [Embedlets-dev] Persistence Check in

[Ted K. <tk...@ya...>]

Chris,

> I put in a day and a half on the Persistnce startup code. It is now
> launching the container with the initial services, based on the definitons
> in the config.xml file.
> 
> To try things out:

I checked out and tried the code and it worked fine!  Moving the setup
procedure into the build.xml file made things much smoother too.  Also, I am
running on a Linux box and this did not seem to cause any problems.

What might be helpful at this point would be to put together an appendix on the
Persistence API that could be added to the specification document.  I would be
nice to see some high level documentation that describes the Persistence API's
'theory of operation' and typical use cases.  Just a thought.

Anyway, it looks good so far!

Ted

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