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Composite Implementation Sample
===============================
This sample shows how composites can be used to implement components.
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-implementation-composite.jar composite.CompositeClient
and on *nix do
java -cp ../../lib/tuscany-sca-manifest.jar:target/sample-implementation-composite.jar composite.CompositeClient
Sample Overview
---------------
The sample is comprised of three composites. Take a look at the composite file
or the .svg/.png file which shows the composite file in pictorial form. The
OuterComposite defines three components two of which are implemented using
composites. The SourceComponent calls each TargetComponent in turn. There is a
callback which returns from each TargetComponent to the SourceComponent.
implementation-composite/
src/
main/
java/
composite/
Source.java - interface for the source component
SourceImpl.java - implementation for the source component
SourceCallback.java - source component callback interface
Target.java - interface for the target component
TargetImpl.java - implementation for the target component
CompositeClient.java - starts the SCA Runtime and
deploys the OuterComposite.composite.
This in turn pulls in the two inner
composites
resources/
META-INF/
sca-contribution.xml - specifies the composite to be deployed
OuterComposite.composite - the top level SCA assembly for this sample
InnerComposite.composite - included by OuterComposite.composite
InnerComposite2.composite - included by OuterComposite.composite
test/
java/
composite/
CompositeTestCase.java - JUnit test case
implementation-composite.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 implementation-composite
ant compile
ant run
You should see the following output from the run target.
run:
[java] Main thread Thread[main,5,main]
[java] Source: Client.main -> Source.clientMethod
[java] Source: Client.main => Source.clientMethod2
[java] Sleeping ...
[java] Target: Client.main -> Source.clientMethod
[java] Work thread Thread[pool-1-thread-1,5,main]
[java] Result: Client.main -> Source.clientMethod -> Target.someMethod
[java] Target: Client.main => Source.clientMethod2
[java] Work thread Thread[pool-1-thread-2,5,main]
[java] Result: Client.main => Source.clientMethod2 -> Target.someMethod
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 implementation-composite
mvn
You should see the following output from the test phase.
-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running composite.CompositeTestCase
Main thread Thread[main,5,main]
Source: Client.main -> Source.clientMethod
Source: Client.main => Source.clientMethod2
Sleeping ...
Target: Client.main => Source.clientMethod2
Work thread Thread[pool-1-thread-2,5,main]
Result: Client.main => Source.clientMethod2 -> Target.someMethod
Target: Client.main -> Source.clientMethod
Work thread Thread[pool-1-thread-1,5,main]
Result: Client.main -> Source.clientMethod -> Target.someMethod
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 1.973 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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