Add support for invoking a main method instead of running the Shell. That enables using 'mvn tuscany:run' instead of 'mvn exec:java' to run a Tuscany sample that runs a regular Java SE class using Tuscany

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1087238 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 45 insertions, 0 deletions

diff --git a/sca-java-2.x/trunk/maven/maven-tuscany-plugin/src/main/java/org/apache/tuscany/maven/plugin/TuscanyRunMojo.java b/sca-java-2.x/trunk/maven/maven-tuscany-plugin/src/main/java/org/apache/tuscany/maven/plugin/TuscanyRunMojo.java
index d5cce76bc2..359762f71a 100644
--- a/sca-java-2.x/trunk/maven/maven-tuscany-plugin/src/main/java/org/apache/tuscany/maven/plugin/TuscanyRunMojo.java
+++ b/sca-java-2.x/trunk/maven/maven-tuscany-plugin/src/main/java/org/apache/tuscany/maven/plugin/TuscanyRunMojo.java
@@ -19,7 +19,10 @@
 package org.apache.tuscany.maven.plugin;

 

 import java.io.File;

+import java.lang.reflect.Method;

 import java.net.MalformedURLException;

+import java.net.URL;

+import java.net.URLClassLoader;

 import java.util.ArrayList;

 import java.util.List;

 

@@ -98,7 +101,25 @@ public class TuscanyRunMojo extends AbstractMojo {
      */

     private String[] contributions;

 

+    /**

+     * @parameter expression="${mainClass}"

+     */

+    private String mainClass;

+

+    /**

+     * @parameter expression="${arguments}"

+     */

+    private String[] arguments;

+

     public void execute() throws MojoExecutionException, MojoFailureException {

+        if (mainClass != null) {

+            executeMainMethod();

+        } else {

+            executeShell();

+        }

+    }

+

+    private void executeShell() throws MojoExecutionException {

         getLog().info("Starting Tuscany Shell...");

 

         List<String> contributionList = new ArrayList<String>();

@@ -165,4 +186,28 @@ public class TuscanyRunMojo extends AbstractMojo {
             throw new MojoExecutionException("", e);

         }

     }

+

+    public void executeMainMethod() throws MojoExecutionException, MojoFailureException {

+        getLog().info("Invoking " + mainClass + " class main method...");

+        

+        if (arguments == null) {

+            arguments = new String[0];

+        }

+

+        try {

+            Method main = getMainClassLoader().loadClass(mainClass).getMethod("main", new Class[] {String[].class});

+            main.invoke(main, new Object[] {arguments});

+        } catch (NoSuchMethodException e) {

+            throw new MojoExecutionException("The specified mainClass doesn't contain a main method with appropriate signature", e);

+        } catch (Exception e) {

+            throw new MojoExecutionException("exception invoking main method", e);

+        }

+    }

+

+    private ClassLoader getMainClassLoader() throws MalformedURLException {

+        ClassLoader parent = Thread.currentThread().getContextClassLoader();

+        URL thisProject = new File( project.getBuild().getOutputDirectory()).toURI().toURL(); 

+        return new URLClassLoader(new URL[]{thisProject}, parent );

+    }

+

 }