com.googlecode.gwt.test.internal.handlers.TestRemoteServiceCreateHandler Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of gwt-test-utils Show documentation
There is a newer version: 0.63
package com.googlecode.gwt.test.internal.handlers;

import java.util.HashMap;
import java.util.Map;

import com.google.gwt.user.client.rpc.RemoteService;
import com.googlecode.gwt.test.exceptions.GwtTestConfigurationException;
import com.googlecode.gwt.test.internal.GwtConfig;
import com.googlecode.gwt.test.internal.ModuleData;
import com.googlecode.gwt.test.rpc.RemoteServiceCreateHandler;
import com.googlecode.gwt.test.utils.GwtReflectionUtils;

/**
 * GwtCreateHandler for {@link RemoteService} instances which would have been declared in the module
 * .ui.xml configuration file with the  tag.
 * 
 * @author Gael Lazzari
 * 
 */
class TestRemoteServiceCreateHandler extends RemoteServiceCreateHandler {

   private static final TestRemoteServiceCreateHandler INSTANCE = new TestRemoteServiceCreateHandler();

   public static TestRemoteServiceCreateHandler get() {
      return INSTANCE;
   }

   private final Map cachedServices = new HashMap();

   public void reset() {
      cachedServices.clear();
   }

   /*
    * (non-Javadoc)
    * 
    * @see com.googlecode.gwt.test.server.RemoteServiceCreateHandler#findService(java .lang .Class,
    * java.lang.String)
    */
   @Override
   protected Object findService(Class remoteServiceClass, String remoteServiceRelativePath) {

      Object remoteServiceInstance = cachedServices.get(remoteServiceRelativePath);

      if (remoteServiceInstance == null) {
         remoteServiceInstance = instanciateRemoteServiceInstance(remoteServiceClass,
                  remoteServiceRelativePath);
         cachedServices.put(remoteServiceRelativePath, remoteServiceInstance);
      }

      return remoteServiceInstance;
   }

   @SuppressWarnings("unchecked")
   private  T instanciateRemoteServiceInstance(Class remoteServiceClass,
            String remoteServiceRelativePath) {

      String moduleName = GwtConfig.get().getTestedModuleName();
      Class remoteServiceImplClass = ModuleData.get(moduleName).getRemoteServiceImplClass(
               remoteServiceRelativePath);

      if (remoteServiceImplClass == null) {
         return null;
      } else if (!remoteServiceClass.isAssignableFrom(remoteServiceImplClass)) {
         throw new GwtTestConfigurationException("The servlet class '"
                  + remoteServiceImplClass.getName() + "' setup for path '"
                  + remoteServiceRelativePath + "' does not implement RemoteService interface '"
                  + remoteServiceClass.getName());
      } else {
         try {
            return (T) GwtReflectionUtils.instantiateClass(remoteServiceImplClass);
         } catch (Exception e) {
            throw new GwtTestConfigurationException("Error during the instanciation of "
                     + RemoteService.class.getSimpleName() + " implementation for servlet path '"
                     + remoteServiceRelativePath + "'", e);
         }
      }

   }

}