| Calculator Script Sample |
| ======================== |
| This sample implements a simple calculator using SCA components implemented |
| using Java, JavaScript, Ruby, Python and Groovy. |
| |
| 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-calculator-script.jar calculator.CalculatorClient |
| |
| and on *nix do |
| |
| java -cp ../../lib/tuscany-sca-manifest.jar:target/sample-calculator-script.jar calculator.CalculatorClient |
| |
| 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. Each |
| component is implemented using a different language. |
| |
| calculator-script/ |
| src/ |
| main/ |
| java/ |
| calculator/ |
| CalculatorService.java - the first component calls +-/* as |
| appropriate |
| CalculatorServiceImpl.java |
| AddService.java - adds two numbers |
| SubtractService.java - subtracts one number from another |
| MultiplyService.java - multiplies two numbers |
| DivideService.java - divides one number by another |
| CalculatorClient.java - starts the SCA Runtime and |
| deploys the Calculator.composite. |
| It then calls the deployed Calculator |
| Components services |
| resources/ |
| calculator/ |
| AddServiceImpl.js - A JavaScript implementation of the |
| Add component |
| SubtractServiceImpl.rb - A Ruby implementation of the Subtract |
| component |
| MultiplyServiceImpl.py - A Python implementation of the |
| Multiple component |
| DivideServiceImpl.groovy- A Groovy implementation of the |
| Divide component |
| Calculator.composite - the SCA assembly for this sample |
| |
| test/ |
| java/ |
| calculator/ |
| CalculatorTestCase.java - JUnit test case |
| calculator-script.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-script |
| 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-script |
| 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: 5.918 sec |
| |
| Results : |
| |
| Tests run: 1, Failures: 0, Errors: 0, Skipped: 0 |
| |
| This shows that the Junit test cases have run successfully. |
