// license-header java merge-point
   //
   // Attention: generated code (by MetafacadeLogic.vsl) - do not modify!
   //
   package org.andromda.metafacades.uml14;
   
   import java.util.Collection;
   import java.util.List;
   import org.andromda.core.metafacade.MetafacadeBase;
  import org.andromda.core.metafacade.ModelValidationMessage;
  import org.andromda.metafacades.uml.DependencyFacade;
  import org.andromda.metafacades.uml.FrontEndAction;
  import org.andromda.metafacades.uml.FrontEndController;
  import org.andromda.metafacades.uml.FrontEndUseCase;
  import org.andromda.translation.ocl.validation.OCLCollections;
  import org.andromda.translation.ocl.validation.OCLIntrospector;
  import org.andromda.translation.ocl.validation.OCLResultEnsurer;
  import org.apache.log4j.Logger;
  import org.omg.uml.foundation.core.Classifier;
  
  /**
   * A front end controller is assigned as the context of a use-case. The controller provides the
   * "controlling" of the use case's activity.
   * MetafacadeLogic for FrontEndController
   *
   * @see FrontEndController
   */
  public abstract class FrontEndControllerLogic
      extends ClassifierFacadeLogicImpl
      implements FrontEndController
  {
      /**
       * The underlying UML object
       * @see Object
       */
      protected Object metaObject;
  
      /** Create Metafacade implementation instance using the MetafacadeFactory from the context
       * @param metaObjectIn
       * @param context
       */
      protected FrontEndControllerLogic(Object metaObjectIn, String context)
      {
          super((Classifier)metaObjectIn, getContext(context));
          this.metaObject = metaObjectIn;
      }
  
      /**
       * The logger instance.
       */
      private static final Logger logger = Logger.getLogger(FrontEndControllerLogic.class);
  
      /**
       * Gets the context for this metafacade logic instance.
       * @param context String. Set to FrontEndController if null
       * @return context String
       */
      private static String getContext(String context)
      {
          if (context == null)
          {
              context = "org.andromda.metafacades.uml.FrontEndController";
          }
          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 FrontEndController
       */
      public boolean isFrontEndControllerMetaType()
      {
          return true;
      }
  
      // ------------- associations ------------------
  
      private FrontEndUseCase __getUseCase1r;
      private boolean __getUseCase1rSet = false;
  
      /**
       * Returns the controller for this use-case.
       * @return (FrontEndUseCase)handleGetUseCase()
       */
      public final FrontEndUseCase getUseCase()
      {
         FrontEndUseCase getUseCase1r = this.__getUseCase1r;
         if (!this.__getUseCase1rSet)
         {
             // controller has no pre constraints
             Object result = handleGetUseCase();
             MetafacadeBase shieldedResult = this.shieldedElement(result);
             try
             {
                 getUseCase1r = (FrontEndUseCase)shieldedResult;
             }
             catch (ClassCastException ex)
             {
                 // Bad things happen if the metafacade type mapping in metafacades.xml is wrong - Warn
                 FrontEndControllerLogic.logger.warn("incorrect metafacade cast for FrontEndControllerLogic.getUseCase FrontEndUseCase " + result + ": " + shieldedResult);
             }
             // controller 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();
 
     private List<DependencyFacade> __getServiceReferences2r;
     private boolean __getServiceReferences2rSet = false;
 
     /**
      * A front end controller is assigned as the context of a use-case. The controller provides the
      * "controlling" of the use case's activity.
      * @return (List<DependencyFacade>)handleGetServiceReferences()
      */
     public final List<DependencyFacade> getServiceReferences()
     {
         List<DependencyFacade> getServiceReferences2r = this.__getServiceReferences2r;
         if (!this.__getServiceReferences2rSet)
         {
             // frontEndController has no pre constraints
             List result = handleGetServiceReferences();
             List shieldedResult = this.shieldedElements(result);
             try
             {
                 getServiceReferences2r = (List<DependencyFacade>)shieldedResult;
             }
             catch (ClassCastException ex)
             {
                 // Bad things happen if the metafacade type mapping in metafacades.xml is wrong - Warn
                 FrontEndControllerLogic.logger.warn("incorrect metafacade cast for FrontEndControllerLogic.getServiceReferences List<DependencyFacade> " + result + ": " + shieldedResult);
             }
             // frontEndController has no post constraints
             this.__getServiceReferences2r = getServiceReferences2r;
             if (isMetafacadePropertyCachingEnabled())
             {
                 this.__getServiceReferences2rSet = true;
             }
         }
         return getServiceReferences2r;
     }
 
     /**
      * UML Specific type is returned in Collection, transformed by shieldedElements to AndroMDA Metafacade type
      * @return  List
      */
     protected abstract List handleGetServiceReferences();
 
     private List<FrontEndAction> __getDeferringActions3r;
     private boolean __getDeferringActions3rSet = false;
 
     /**
      * The controller that will handle the execution of this front-end action. This controller is
      * set as the context of the activity graph (and therefore also of the use-case).
      * @return (List<FrontEndAction>)handleGetDeferringActions()
      */
     public final List<FrontEndAction> getDeferringActions()
     {
         List<FrontEndAction> getDeferringActions3r = this.__getDeferringActions3r;
         if (!this.__getDeferringActions3rSet)
         {
             // controller has no pre constraints
             List result = handleGetDeferringActions();
             List shieldedResult = this.shieldedElements(result);
             try
             {
                 getDeferringActions3r = (List<FrontEndAction>)shieldedResult;
             }
             catch (ClassCastException ex)
             {
                 // Bad things happen if the metafacade type mapping in metafacades.xml is wrong - Warn
                 FrontEndControllerLogic.logger.warn("incorrect metafacade cast for FrontEndControllerLogic.getDeferringActions List<FrontEndAction> " + result + ": " + shieldedResult);
             }
             // controller has no post constraints
             this.__getDeferringActions3r = getDeferringActions3r;
             if (isMetafacadePropertyCachingEnabled())
             {
                 this.__getDeferringActions3rSet = true;
             }
         }
         return getDeferringActions3r;
     }
 
     /**
      * UML Specific type is returned in Collection, transformed by shieldedElements to AndroMDA Metafacade type
      * @return  List
      */
     protected abstract List handleGetDeferringActions();
 
     /**
      * <p><b>Constraint:</b> org::andromda::metafacades::uml::FrontEndController::front-end controllers need a package</p>
      * <p><b>Error:</b> Each front-end controller is required to be modeled in a package, doing otherwise will result in uncompileable code due to filename collisions.</p>
      * <p><b>OCL:</b> context FrontEndController inv: packageName->notEmpty()</p>
      * @param validationMessages Collection<ModelValidationMessage>
      * @see ClassifierFacadeLogicImpl#validateInvariants(Collection validationMessages)
      */
     @Override
     public void validateInvariants(Collection<ModelValidationMessage> validationMessages)
     {
         super.validateInvariants(validationMessages);
         try
         {
             final Object contextElement = this.THIS();
             boolean constraintValid = OCLResultEnsurer.ensure(OCLCollections.notEmpty(OCLIntrospector.invoke(contextElement,"packageName")));
             if (!constraintValid)
             {
                 validationMessages.add(
                     new ModelValidationMessage(
                         (MetafacadeBase)contextElement ,
                         "org::andromda::metafacades::uml::FrontEndController::front-end controllers need a package",
                         "Each front-end controller is required to be modeled in a package, doing otherwise will result in uncompileable code due to filename collisions."));
             }
         }
         catch (Throwable th)
         {
             Throwable cause = th.getCause();
             int depth = 0; // Some throwables have infinite recursion
             while (cause != null && depth < 7)
             {
                 th = cause;
                 depth++;
             }
             logger.error("Error validating constraint 'org::andromda::metafacades::uml::FrontEndController::front-end controllers need a package' ON "
                 + this.THIS().toString() + ": " + th.getMessage(), th);
         }
     }
 }