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   *  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
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   *
   *    https://www.apache.org/licenses/LICENSE-2.0
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  package org.apache.cayenne.di.spi;
  
  import org.apache.cayenne.di.DIRuntimeException;
  import org.apache.cayenne.di.DecoratorBuilder;
  import org.apache.cayenne.di.Key;
  
  /**
   * @since 4.0
   */
  class DefaultDecoratorBuilder<T> implements DecoratorBuilder<T> {
  
      private Key<T> bindingKey;
      private DefaultInjector injector;
  
      DefaultDecoratorBuilder(Key<T> bindingKey, DefaultInjector injector) {
          this.bindingKey = bindingKey;
          this.injector = injector;
      }
  
      @Override
      public DecoratorBuilder<T> after(Class<? extends T> decoratorImplementationType) throws DIRuntimeException {
          injector.putDecorationAfter(bindingKey, decoratorProvider(decoratorImplementationType));
          return this;
      }
  
      @Override
      public DecoratorBuilder<T> before(Class<? extends T> decoratorImplementationType) throws DIRuntimeException {
          injector.putDecorationBefore(bindingKey, decoratorProvider(decoratorImplementationType));
          return this;
      }
  
      private DecoratorProvider<T> decoratorProvider(Class<? extends T> decoratorType) {
          DecoratorProvider<T> provider0 = new ConstructorInjectingDecoratorProvider<T>(decoratorType, injector);
          DecoratorProvider<T> provider1 = new FieldInjectingDecoratorProvider<T>(decoratorType, provider0, injector);
          return provider1;
      }
  
  }
  