/*
 * 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.shrinkwrap.api;

/**
 * Indicates that a default name cannot be generated for
 * a given type because no extension mapping has been configured
 * via {@link Configuration#getExtensionMapping()}.  
 * 
 * @author <a href="mailto:andrew.rubinger@jboss.org">ALR</a>
 * @version $Revision: $
 */
public class UnknownExtensionTypeException extends RuntimeException
{

   //-------------------------------------------------------------------------------------||
   // Class Members ----------------------------------------------------------------------||
   //-------------------------------------------------------------------------------------||

   /**
    * serialVersionUID
    */
   private static final long serialVersionUID = 1L;

   //-------------------------------------------------------------------------------------||
   // Constructor ------------------------------------------------------------------------||
   //-------------------------------------------------------------------------------------||

   /**
    * Creates a new instance with message indicating the missing type
    */
   private <T extends Assignable> UnknownExtensionTypeException(final Class<T> type)
   {
      super(
            "The current configuration has no mapping for type "
                  + type.getCanonicalName()
                  + ", unable to determine extension. Either add a mapping via Configuration.getExtensionMapping or manually assign a name.");
   }

   //-------------------------------------------------------------------------------------||
   // Factory ----------------------------------------------------------------------------||
   //-------------------------------------------------------------------------------------||

   /**
    * Creates a new {@link UnknownExtensionTypeException} for the specified type
    * 
    * @throws IllegalArgumentException If the type is not specified
    */
   static <T extends Assignable> UnknownExtensionTypeException newInstance(final Class<T> type)
         throws IllegalArgumentException
   {
      // Precondition checks
      if (type == null)
      {
         throw new IllegalArgumentException("type must be specified");
      }

      // Create new
      return new UnknownExtensionTypeException(type);
   }
}

Make archive name optional in ShrinkWrap.create and ArchiveFactory.create. Original patch by Ken Gullaksen with some adjustments by ALR: Added UnknownExtensionTypeException Made JavaDoc more explicit Removed impl-base test class to get the extension names; the test should define these on its own so we do not pass the test if the API accidentally changes extension mappings