package org.apache.onami.autobind.annotations.features;
   
   /*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF licenses this file to You 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.
   */
  
  import static java.lang.String.format;
  import static java.util.logging.Level.FINE;
  import static org.apache.onami.autobind.annotations.To.Type.IMPLEMENTATION;
  import static org.apache.onami.autobind.install.BindingStage.BINDING;
  import static org.apache.onami.autobind.install.BindingStage.IGNORE;
  
  import java.lang.annotation.Annotation;
  import java.util.Map;
  
  import javax.inject.Singleton;
  
  import org.apache.onami.autobind.annotations.Bind;
  import org.apache.onami.autobind.install.BindingStage;
  
  @Singleton
  public class ImplementationBindingFeature
      extends AutoBindingFeature
  {
  
      @Override
      public BindingStage accept( Class<Object> annotatedClass, Map<String, Annotation> annotations )
      {
          if ( annotations.containsKey( Bind.class.getName() ) )
          {
              Bind annotation = (Bind) annotations.get( Bind.class.getName() );
              if ( !annotation.multiple() && ( IMPLEMENTATION == annotation.to().value() ) )
              {
                  return BINDING;
              }
          }
          return IGNORE;
      }
  
      @Override
      public void process( final Class<Object> annotatedClass, final Map<String, Annotation> annotations )
      {
          final boolean asSingleton =
              ( annotations.containsKey( com.google.inject.Singleton.class.getName() ) || annotations.containsKey( javax.inject.Singleton.class.getName() ) );
  
          if ( _logger.isLoggable( FINE ) )
          {
              _logger.fine( format( "Binding Class %s. Singleton? %s ", annotatedClass, asSingleton ) );
          }
  
          bind( annotatedClass, null, ( asSingleton ? Singleton.class : null ) );
      }
  
  }