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Simple Callback Sample
======================
This sample demonstrates asynchronous messaging using a callback.
The README in the samples directory (the directory above this) provides
general instructions about building and running samples. Take a look there
first.
If you just want to run it to see what happens open a command prompt, navigate
to this sample directory and do:
ant run
OR if you don't have ant, on Windows do
java -cp ..\..\lib\tuscany-sca-manifest.jar;target\sample-simple-callback.jar simplecallback.SimpleCallbackClient
and on *nix do
java -cp ../../lib/tuscany-sca-manifest.jar:target/sample-simple-callback.jar simplecallback.SimpleCallbackClient
Sample Overview
---------------
The sample provides a single composite with two components. MyClientComponent is
wired to MyServiceComponent. The interface of MyServiceComponent describes one
method as ONEWAY and with a callback semantic. When a message passes from
client to service the response is returned via the callback asynchronously.
simple-callback/
src/
main/
java/
simplecallback/
MyCient.java - client interface
MyClientImpl.java - implements the client and service callback
interfaces
MyService.java - service interface
MyServiceCallback.java - service callback interface, implemented by the
client
MyServiceImple.java - implements the service interface
SimpleCallbackClient.java - starts the SCA Runtime and
deploys the simplecallback.composite.
It then calls MyClientComponent which in turn
calls MyServiceComponent
resources/
simplecallbac.composite - the SCA assembly for this sample
simple-callback.png - a pictorial representation of the sample
.composite file
build.xml - the Ant build file
pom.xml - the Maven build file
Building And Running The Sample Using Ant
-----------------------------------------
With the binary distribution the sample can be built and run using Ant as
follows
cd simple-callback
ant compile
ant run
You should see the following output from the run target.
run:
[java] Main thread Thread[main,5,main]
[java] Work thread Thread[pool-1-thread-1,5,main]
[java] Result: -> someMethod -> receiveResult
Building And Running The Sample Using Maven
-------------------------------------------
With either the binary or source distributions the sample can be built and run
using Maven as follows.
cd simple-callback
mvn
You should see the following output from the test phase.
-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running simplecallback.SimpleCallbackTestCase
Main thread Thread[main,5,main]
Sleeping ...
Work thread Thread[pool-1-thread-1,5,main]
Result: -> someMethod -> receiveResult
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 1.692 sec
Results :
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0
This shows that the Junit test cases have run successfully.
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