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Calculator CORBA Reference Sample
=================================
This sample illustrates the use of the Tuscany CORBA Binding to reference
services that are hosted as CORBA services.
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, first
navigate to the calculator-corba-service sample and do:
ant run
OR if you don't have ant, on Windows do
java -cp ..\..\lib\tuscany-sca-manifest.jar;target\sample-calculator-corba-service.jar calculator.CalculatorCORBAServer
and on *nix do
java -cp ../../lib/tuscany-sca-manifest.jar:target/sample-calculator-corba-service.jar calculator.CalculatorCORBAServer
Now you have the server running you need to open another 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-calculator-corba-reference.jar calculator.CalculatorClient
and on *nix do
java -cp ../../lib/tuscany-sca-manifest.jar:target/sample-calculator-corba-reference.jar calculator.CalculatorClient
Sample Overview
---------------
This sample extends the calculator sample by replacing the local wired
connections with CORBA bindings. Instead of local add, subtract, multiply and
divide components, a CORBA service implementation now provides the
add, subtract, multiply and divide interfaces and is hosted as an CORBA object.
References specified in the .composite file include a CORBA binding which targets
this CORBA object. The name service which is used in CORBA communication is
provided in the test case class - CalculatorCORBAReferenceTestCase.java.
This sample adds a number of classes to the basic calculator sample:
calculator-corba-reference/
src/
main/
java/
calculator/
CalculatorService.java - as calculator sample
AddService.java - as calculator sample
SubtractService.java - as calculator sample
MultiplyService.java - as calculator sample
DivideService.java - as calculator sample
CalculatorClient.java - as calculator sample
CalculatorServiceImpl.java - calls the CORBA service
that provides the target for the
CORBA bindings in the composite
resources/
CalculatorCORBAReference.composite - the SCA assembly for this sample
test/
java/
calculator/
CalculatorCORBAReferenceTestCase.java - JUnit test case
CalculatorCORBAServant.java - CORBA service implementation
idl/ - contains files generated
from the IDL file. Files are
used to create a CORBA object which
will be consumed by SCA references.
_CalculatorCORBAServiceImplBase.java
CalculatorCORBAService.java
CalculatorCORBAServiceOperations.java
resources/
CalculatorCORBA.idl - IDL description for CORBA object
pom.xml - the Maven build file
Note. As this test creates and uses local network connections you may need to
configure your firewall, if you are running one, to allow the test to run
successfully.
Building And Running The Sample Using Ant
-----------------------------------------
With the binary distribution the sample can be built and run using Ant.
The calculator-corba-service sample provides a CORBA server that acts as a target
for the SCA CORBA binding. Start a new console and use the following commands.
cd calculator-corba-service
ant compile
ant run
This will run up the server and display the following.
run:
[java] Calculator CORBA server started (press enter to shutdown)
The client is very similar to the calculator sample. It starts the SCA runtime
and calls each of the calculator operations. In doing this the CORBA binding
makes calls out to the CORBA server you started in the previous step. Start
a new console and use the following commands.
cd calculator-corba-reference
ant compile
ant run
You should see the following output from the run target.
run:
[java] 3 + 2=5.0
[java] 3 - 2=1.0
[java] 3 * 2=6.0
[java] 3 / 2=1.5
If you now return to the console window running the server and press enter the
server should stop.
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 calculator-corba-reference
mvn
You should see the following output from the test phase.
-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running calculator.CalculatorCORBAReferenceTestCase
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 5.308 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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