| Simple Callback Sample |
| ====================== |
| This sample demonstrates asynchronous messaging using a callback. |
| |
| 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-simple-callback.jar simplecallback.SimpleCallbackClient |
| |
| and on *nix do |
| |
| java -cp ../../lib/tuscany-sca-manifest.jar:target/sample-simple-callback.jar simplecallback.SimpleCallbackClient |
| |
| |
| Sample Overview |
| --------------- |
| The sample provides a single composite with two components. MyClientComponent is |
| wired to MyServiceComponent. The interface of MyServiceComponent describes one |
| method as ONEWAY and with a callback semantic. When a message passes from |
| client to service the response is returned via the callback asynchronously. |
| |
| simple-callback/ |
| src/ |
| main/ |
| java/ |
| simplecallback/ |
| MyClient.java - client interface |
| MyClientImpl.java - implements the client and service callback |
| interfaces |
| MyService.java - service interface |
| MyServiceCallback.java - service callback interface, implemented by the |
| client |
| MyServiceImpl.java - implements the service interface |
| SimpleCallbackClient.java - starts the SCA Runtime and |
| deploys the simplecallback.composite. |
| It then calls MyClientComponent which in turn |
| calls MyServiceComponent |
| resources/ |
| simplecallback.composite - the SCA assembly for this sample |
| test/ |
| java/ |
| simplecallback/ |
| SimpleCallbackTestCase.java - JUnit test case |
| simple-callback.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 simple-callback |
| ant compile |
| ant run |
| |
| You should see the following output from the run target. |
| |
| run: |
| [java] Main thread Thread[main,5,main] |
| [java] Work thread Thread[pool-1-thread-1,5,main] |
| [java] Result: -> someMethod -> receiveResult |
| |
| 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 simple-callback |
| mvn |
| |
| You should see the following output from the test phase. |
| |
| ------------------------------------------------------- |
| T E S T S |
| ------------------------------------------------------- |
| Running simplecallback.SimpleCallbackTestCase |
| Main thread Thread[main,5,main] |
| Sleeping ... |
| Work thread Thread[pool-1-thread-1,5,main] |
| Result: -> someMethod -> receiveResult |
| Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 1.692 sec |
| |
| Results : |
| |
| Tests run: 1, Failures: 0, Errors: 0, Skipped: 0 |
| |
| This shows that the Junit test cases have run successfully. |