// license-header java merge-point
   //
   // Attention: generated code (by MetafacadeLogic.vsl) - do not modify!
   //
   package org.andromda.metafacades.uml14;
   
   import java.util.Collection;
   import org.andromda.core.metafacade.MetafacadeBase;
   import org.andromda.core.metafacade.ModelValidationMessage;
  import org.andromda.metafacades.uml.ExtensionPointFacade;
  import org.andromda.metafacades.uml.UseCaseFacade;
  import org.apache.log4j.Logger;
  import org.omg.uml.behavioralelements.usecases.ExtensionPoint;
  
  /**
   * Identifies a point in the behavior of a use case where that behavior can be extended by the
   * behavior of some other (extending) use case, as specified by an extend relationship.
   * MetafacadeLogic for ExtensionPointFacade
   *
   * @see ExtensionPointFacade
   */
  public abstract class ExtensionPointFacadeLogic
      extends ModelElementFacadeLogicImpl
      implements ExtensionPointFacade
  {
      /**
       * The underlying UML object
       * @see ExtensionPoint
       */
      protected ExtensionPoint metaObject;
  
      /** Create Metafacade implementation instance using the MetafacadeFactory from the context
       * @param metaObjectIn
       * @param context
       */
      protected ExtensionPointFacadeLogic(ExtensionPoint metaObjectIn, String context)
      {
          super(metaObjectIn, getContext(context));
          this.metaObject = metaObjectIn;
      }
  
      /**
       * The logger instance.
       */
      private static final Logger logger = Logger.getLogger(ExtensionPointFacadeLogic.class);
  
      /**
       * Gets the context for this metafacade logic instance.
       * @param context String. Set to ExtensionPointFacade if null
       * @return context String
       */
      private static String getContext(String context)
      {
          if (context == null)
          {
              context = "org.andromda.metafacades.uml.ExtensionPointFacade";
          }
          return context;
      }
  
      /** Reset context only for non-root metafacades
       * @param context
       */
      @Override
      public void resetMetafacadeContext(String context)
      {
          if (!this.contextRoot) // reset context only for non-root metafacades
          {
              context = getContext(context);  // to have same value as in original constructor call
              setMetafacadeContext (context);
          }
      }
  
      /**
       * @return boolean true always
       * @see ExtensionPointFacade
       */
      public boolean isExtensionPointFacadeMetaType()
      {
          return true;
      }
  
      // ------------- associations ------------------
  
      private UseCaseFacade __getUseCase1r;
      private boolean __getUseCase1rSet = false;
  
      /**
       * The extension points related to this use-case.
       * @return (UseCaseFacade)handleGetUseCase()
       */
      public final UseCaseFacade getUseCase()
      {
          UseCaseFacade getUseCase1r = this.__getUseCase1r;
          if (!this.__getUseCase1rSet)
          {
              // extensionPoints has no pre constraints
              Object result = handleGetUseCase();
              MetafacadeBase shieldedResult = this.shieldedElement(result);
             try
             {
                 getUseCase1r = (UseCaseFacade)shieldedResult;
             }
             catch (ClassCastException ex)
             {
                 // Bad things happen if the metafacade type mapping in metafacades.xml is wrong - Warn
                 ExtensionPointFacadeLogic.logger.warn("incorrect metafacade cast for ExtensionPointFacadeLogic.getUseCase UseCaseFacade " + result + ": " + shieldedResult);
             }
             // extensionPoints has no post constraints
             this.__getUseCase1r = getUseCase1r;
             if (isMetafacadePropertyCachingEnabled())
             {
                 this.__getUseCase1rSet = true;
             }
         }
         return getUseCase1r;
     }
 
     /**
      * UML Specific type is transformed by shieldedElements to AndroMDA Metafacade type
      * @return Object
      */
     protected abstract Object handleGetUseCase();
 
     /**
      * @param validationMessages Collection<ModelValidationMessage>
      * @see ModelElementFacadeLogicImpl#validateInvariants(Collection validationMessages)
      */
     @Override
     public void validateInvariants(Collection<ModelValidationMessage> validationMessages)
     {
         super.validateInvariants(validationMessages);
     }
 }