DroneCreator.java

/*
 * JBoss, Home of Professional Open Source
 * Copyright 2010, Red Hat Middleware LLC, and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jboss.arquillian.drone.impl;

import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.util.logging.Level;
import java.util.logging.Logger;

import org.jboss.arquillian.drone.annotation.Drone;
import org.jboss.arquillian.drone.event.DroneConfigured;
import org.jboss.arquillian.drone.spi.Instantiator;
import org.jboss.arquillian.drone.spi.DroneConfiguration;
import org.jboss.arquillian.spi.core.Instance;
import org.jboss.arquillian.spi.core.annotation.Inject;
import org.jboss.arquillian.spi.core.annotation.Observes;

/**
 * Creator of drone instances. Creates a instance for every field annotated
 * with {@link Drone}.
 * 
 * <p>
 * Consumes:
 * </p>
 * <ol>
 * <li>{@link DroneRegistry}</li>
 * <li>{@link DroneContext}</li>
 * </ol>
 * 
 * <p>
 * Observes:
 * </p>
 * <ol>
 * <li>{@link DroneConfigured}</li>
 * </ol>
 * 
 * @author <a href="kpiwko@redhat.com>Karel Piwko</a>
 * 
 */
public class DroneCreator
{
   private static final Logger log = Logger.getLogger(DroneCreator.class.getName());

   @Inject
   private Instance<DroneRegistry> registry;

   @Inject
   private Instance<DroneContext> droneContext;

   @SuppressWarnings("unchecked")
   public void createWebTestBrowser(@Observes DroneConfigured event)
   {
      Field field = event.getInjected();
      Class<?> typeClass = field.getType();
      Class<? extends Annotation> qualifier = event.getQualifier();
      DroneConfiguration<?> configuration = event.getConfiguration();

      @SuppressWarnings("rawtypes")
      Instantiator instantiator = registry.get().getInstantiatorFor(typeClass);

      if (instantiator == null)
      {
         throw new IllegalArgumentException("No instantiator was found for object of type " + typeClass.getName());
      }
      if (log.isLoggable(Level.FINE))
      {
         log.fine("Using instantiator defined in class: " + instantiator.getClass().getName() + ", with precedence " + instantiator.getPrecedence());
      }

      droneContext.get().add(typeClass, qualifier, instantiator.createInstance(configuration));
   }
}