STart to add the ability to retrieve services from the context

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@270843 13f79535-47bb-0310-9956-ffa450edef68

proposal/myrmidon/src/java/org/apache/myrmidon/api/TaskContext.java

@@ -34,12 +34,25 @@ public interface TaskContext
     String NAME = "myrmidon.task.name";
 
     /**
-     * Retrieve Name of tasklet.
+     * Retrieve Name of task.
      *
      * @return the name
      */
     String getName();
 
+    /**
+     * Retrieve a service that is offered by the runtime.
+     * The actual services registered and in place for the
+     * task is determined by the container. The returned service
+     * <b>MUST</b> implement the specified interface.
+     *
+     * @param serviceClass the interface class that defines the service
+     * @return an instance of the service implementing interface specified by parameter
+     * @exception TaskException is thrown when the service is unavailable or not supported
+     */
+    Object getService( Class serviceClass )
+        throws TaskException;
+
     /**
      * Retrieve base directory.
      *

proposal/myrmidon/src/java/org/apache/myrmidon/components/workspace/DefaultTaskContext.java

@@ -91,6 +91,22 @@ public class DefaultTaskContext
         }
     }
 
+    /**
+     * Retrieve a service that is offered by the runtime.
+     * The actual services registered and in place for the
+     * task is determined by the container. The returned service
+     * <b>MUST</b> implement the specified interface.
+     *
+     * @param serviceClass the interface class that defines the service
+     * @return an instance of the service implementing interface specified by parameter
+     * @exception TaskException is thrown when the service is unavailable or not supported
+     */
+    public Object getService( final Class serviceClass )
+        throws TaskException
+    {
+        throw new TaskException( "No services available atm" );
+    }
+
     /**
      * Resolve filename.
      * This involves resolving it against baseDirectory and