Re: suggestion : Ant 1.8 full dist to include a 'scripting lang'

Kevin Jackson wrote:
My collegue julio added ant support to smartfrog a few months back, so
we can run any ant task during deployment. What you dont get is rollback
and liveness operations. Here's a bit of an an example:


sfConfig extends Ant {
   asynch true;
   echoTask extends echo {
     message "hellow world!";
   }

    echoAntTask extends echo {
       message "Ant version '${ant.version}', java version
'${ant.java.version}";
    }

   copyTask extends copy {
       todir "tmp";
       filtering "true";
       myFileSet extends fileset {
         dir ".";
         includes "*.xml";
       }
       myFilterSet extends filterset {
          myFiltersFile extends {
            AntElement "filtersfile";
            file "/filters.props";
          }
       }
   }
   echoMedTask extends echo {
     message "--------------------------------";
   }



   copyTask2 extends copy {
       todir "/juliotmp/kk";
       filtering "true";
       verbose "true";
       myFileSet extends fileset {
         dir "/";
         includes "*.txt";
       }


       globMapper extends globmapper {
         from "*";
         to "*.bak";
       }

   }

   copyTask3 extends copy {
       todir "/juliotmp/kk";
       filtering "true";
       verbose "true";
       myFileSet extends fileset {
         dir "/";
         includes "*.txt";
       }

       flattenmapper extends {AntElement "mapper"; type "flatten";}
   }
}

when you run this, the outer Ant runs everything and sets all the final
ant properties as attributes of the deployed task, so other smartfrog
stuff can work. Apparently getting <condition> to work caused problems,
as it is not enough to run every task. Here's the LGPL runner:

     private void executeNestedAntTasks() throws RemoteException,
SmartFrogException {
         Object attribute = null;
         Object value = null;
         Iterator a = this.sfAttributes();
         try {
             for (Iterator i = this.sfValues(); i.hasNext() &&
!exitAntNow;) {
                 attribute = a.next();
                 value = i.next();
                 if (value instanceof ComponentDescription) {
                     try {
                         if (((ComponentDescription)
value).sfContainsAttribute(ATTR_TASK_NAME)) {
                             Task task = antProject.getTask((String)
attribute, (ComponentDescription) value);
                             task.execute();
                         } else if (((ComponentDescription)
value).sfContainsAttribute(ATTR_ANT_ELEMENT)) {
                             Object element =
antProject.getElement((String) attribute, (ComponentDescription) value);
                         } else {
                             //System.out.println("@todo: something with
attribute: "+ attribute + " "+value+";");
                         }
                     } catch (Exception ex) {
                         Throwable thr = ex;
                         if (thr instanceof
java.lang.reflect.InvocationTargetException) {
                             thr = ex.getCause();
                         }
                         throw SmartFrogException.forward("Error
executing: " + attribute, thr);
                     }
                 }
             }
         } finally {
             //set the static properties after we finish
 
runtime.setStaticProperties(antProject.getProject().getProperties());
         }

     }

Everything is configured using reflection.



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