Moving 2.x contribs

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+Calculator Sample Exposing Web Services In A WebApp

+===================================================

+This sample uses the same code as the calculator sample, it deploys the

+sample wrapped in a web app and exposes the AddService as a web service. 

+

+The README in the samples directory (the directory above this) provides 

+general instructions about building and running samples. Take a look there 

+first. 

+

+As this sample provides a web app there is a manual step where the WAR file

+that contains the sample is copied to your web app container. If you just want 

+to give this sample a go deploy the WAR file (target/sample-calculator-ws-webapp.war)

+to you web application server. 

+  

+Once the web app is deployed use your browser to visit the following URL;

+

+http://localhost:8080/sample-calculator-ws-webapp

+

+The sample is configured to use a service on port 8080. If your servlet container

+is using a port other than 8080 then you will need to edit the Calculator.composite

+and change the uri attribute of the <binding.ws> used by the CalculatorServiceComponent

+to use the correct port.

+

+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.

+

+calculator-webapp/

+  src/

+    main/

+      java/

+        calculator/

+          AddService.java         - As calculator sample

+          AddServiceImpl.java

+          CalculatorClient.java   - As calculator sample

+          CalculatorService.java  - As calculator sample

+          CalculatorServiceImpl.java

+          DivideService.java      - As calculator sample

+          DivideServiceImpl.java

+          MultiplyService.java    - As calculator sample

+          MultiplyServiceImpl.java

+          SubtractService.java    - As calculator sample

+          SubtractServiceImpl.java

+      resources/

+        Calculator.composite      - As calculator sample except that the 

+                                    connection between the CalculatorService

+                                    and the AddService is web services

+      webapp

+        META-INF/

+          sca-contribution.xml    - specifies the composite to be deployed

+        WEB-INF/

+          web.xml                 - defines the listener that starts up the 

+                                    Tuscany SCA runtime and maps service

+                                    calls to the TuscanyServlet

+        calc.jsp                  - the web application that makes use of the

+                                    SCA application 

+           

+  calculator.png - a pictorial representation of the sample .composite file

+  build.xml      - the Ant build file

+  pom.xml        - the Maven build file

+  README         - this file  

+

+Building And Running The Sample Using Ant

+-----------------------------------------

+With the binary distribution the sample can be built using Ant as 

+follows

+

+cd calculator-ws-webapp

+ant package

+

+This should result in a war file (sample-calculator-ws-webapp.war) in the target 

+directory. Copy this war file to your web app deployment directory in you

+web app container. 

+

+The process for getting the web app running will depend on which web app container

+you are using. For example, if you are using Tomcat then it is simply a matter

+of copying the WAR file to the webapps directory. 

+

+Once the web app is deployed use your browser to visit the following URL;

+

+http://localhost:8080/sample-calculator-ws-webapp

+

+The port and hostname will of course vary depending on your local installation. 

+

+You should see the following output.

+

+Expression	Result

+2 + 3	5.0

+3 - 2	1.0

+3 * 2	6.0

+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-ws-webapp 

+mvn

+

+Again this should result in a war file (sample-calculator-ws-webapp.war) in the target 

+directory. Follow the steps described in the previous section for running the web 

+app and for the expected results.

+

+