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Calculator Sample
=================
This sample implements a simple calculator using SCA 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:
java -jar <tuscany-install>/modules/tuscany-node-launcher.jar Calculator.composite target/sample-calculator-lean.jar
Sample Overview
---------------
The sample provides a single calculator service with a default SCA (java)
binding. The CalculatorClient exercises this interface by calling add,
subtract, multiply and divide operations. This results in messages passing to
the appropriate components in the composite across the local wires.
calculator/
src/
main/
java/
calculator/
CalculatorService.java - the first component, calls +-/* as
appropriate
CalculatorServiceImpl.java
AddService.java - adds two numbers
AddServiceImpl.java
SubtractService.java - subtracts one number from another
SubtractServiceImpl.java
MultiplyService.java - multiplies two numbers
MultiplyServiceImpl.java
DivideService.java - divides one number by another
DivideServiceImpl.java
CalculatorClient.java - a client component that calls the
Calculator services
resources/
Calculator.composite - the SCA assembly for this sample
test/
java/
calculator/
CalculatorTestCase.java - JUnit test case
calculator.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 calculator
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
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
mvn
You should see the following output from the test phase.
-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running calculator.CalculatorTestCase
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 1.272 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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