// 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.ActivityGraphFacade;
  import org.andromda.metafacades.uml.ExtendFacade;
  import org.andromda.metafacades.uml.ExtensionPointFacade;
  import org.andromda.metafacades.uml.IncludeFacade;
  import org.andromda.metafacades.uml.UseCaseFacade;
  import org.apache.log4j.Logger;
  import org.omg.uml.behavioralelements.usecases.UseCase;
  
  /**
   * The specification of a set of actions performed by a system, which yields an observable result
   * that is, typically, of value for one or more actors or other stakeholders of the system.
   * MetafacadeLogic for UseCaseFacade
   *
   * @see UseCaseFacade
   */
  public abstract class UseCaseFacadeLogic
      extends NamespaceFacadeLogicImpl
      implements UseCaseFacade
  {
      /**
       * The underlying UML object
       * @see UseCase
       */
      protected UseCase metaObject;
  
      /** Create Metafacade implementation instance using the MetafacadeFactory from the context
       * @param metaObjectIn
       * @param context
       */
      protected UseCaseFacadeLogic(UseCase metaObjectIn, String context)
      {
          super(metaObjectIn, getContext(context));
          this.metaObject = metaObjectIn;
      }
  
      /**
       * The logger instance.
       */
      private static final Logger logger = Logger.getLogger(UseCaseFacadeLogic.class);
  
      /**
       * Gets the context for this metafacade logic instance.
       * @param context String. Set to UseCaseFacade if null
       * @return context String
       */
      private static String getContext(String context)
      {
          if (context == null)
          {
              context = "org.andromda.metafacades.uml.UseCaseFacade";
          }
          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 UseCaseFacade
       */
      public boolean isUseCaseFacadeMetaType()
      {
          return true;
      }
  
      // ------------- associations ------------------
  
      private Collection<ExtendFacade> __getExtends1r;
      private boolean __getExtends1rSet = false;
  
      /**
       * The base use-case.
       * @return (Collection<ExtendFacade>)handleGetExtends()
       */
      public final Collection<ExtendFacade> getExtends()
      {
          Collection<ExtendFacade> getExtends1r = this.__getExtends1r;
          if (!this.__getExtends1rSet)
         {
             // base has no pre constraints
             Collection result = handleGetExtends();
             List shieldedResult = this.shieldedElements(result);
             try
             {
                 getExtends1r = (Collection<ExtendFacade>)shieldedResult;
             }
             catch (ClassCastException ex)
             {
                 // Bad things happen if the metafacade type mapping in metafacades.xml is wrong - Warn
                 UseCaseFacadeLogic.logger.warn("incorrect metafacade cast for UseCaseFacadeLogic.getExtends Collection<ExtendFacade> " + result + ": " + shieldedResult);
             }
             // base has no post constraints
             this.__getExtends1r = getExtends1r;
             if (isMetafacadePropertyCachingEnabled())
             {
                 this.__getExtends1rSet = true;
             }
         }
         return getExtends1r;
     }
 
     /**
      * UML Specific type is returned in Collection, transformed by shieldedElements to AndroMDA Metafacade type
      * @return  Collection
      */
     protected abstract Collection handleGetExtends();
 
     /**
      * The specification of a set of actions performed by a system, which yields an observable
      * result that
      * is, typically, of value for one or more actors or other stakeholders of the system.
      * @return (Collection<IncludeFacade>)handleGetIncludes()
      */
     public final Collection<IncludeFacade> getIncludes()
     {
         Collection<IncludeFacade> getIncludes2r = null;
         // base has no pre constraints
         Collection result = handleGetIncludes();
         List shieldedResult = this.shieldedElements(result);
         try
         {
             getIncludes2r = (Collection<IncludeFacade>)shieldedResult;
         }
         catch (ClassCastException ex)
         {
             // Bad things happen if the metafacade type mapping in metafacades.xml is wrong - Warn
             UseCaseFacadeLogic.logger.warn("incorrect metafacade cast for UseCaseFacadeLogic.getIncludes Collection<IncludeFacade> " + result + ": " + shieldedResult);
         }
         // base has no post constraints
         return getIncludes2r;
     }
 
     /**
      * UML Specific type is returned in Collection, transformed by shieldedElements to AndroMDA Metafacade type
      * @return  Collection
      */
     protected abstract Collection handleGetIncludes();
 
     private Collection<ExtensionPointFacade> __getExtensionPoints3r;
     private boolean __getExtensionPoints3rSet = false;
 
     /**
      * The specification of a set of actions performed by a system, which yields an observable
      * result that
      * is, typically, of value for one or more actors or other stakeholders of the system.
      * @return (Collection<ExtensionPointFacade>)handleGetExtensionPoints()
      */
     public final Collection<ExtensionPointFacade> getExtensionPoints()
     {
         Collection<ExtensionPointFacade> getExtensionPoints3r = this.__getExtensionPoints3r;
         if (!this.__getExtensionPoints3rSet)
         {
             // useCase has no pre constraints
             Collection result = handleGetExtensionPoints();
             List shieldedResult = this.shieldedElements(result);
             try
             {
                 getExtensionPoints3r = (Collection<ExtensionPointFacade>)shieldedResult;
             }
             catch (ClassCastException ex)
             {
                 // Bad things happen if the metafacade type mapping in metafacades.xml is wrong - Warn
                 UseCaseFacadeLogic.logger.warn("incorrect metafacade cast for UseCaseFacadeLogic.getExtensionPoints Collection<ExtensionPointFacade> " + result + ": " + shieldedResult);
             }
             // useCase has no post constraints
             this.__getExtensionPoints3r = getExtensionPoints3r;
             if (isMetafacadePropertyCachingEnabled())
             {
                 this.__getExtensionPoints3rSet = true;
             }
         }
         return getExtensionPoints3r;
     }
 
     /**
      * UML Specific type is returned in Collection, transformed by shieldedElements to AndroMDA Metafacade type
      * @return  Collection
      */
     protected abstract Collection handleGetExtensionPoints();
 
     /**
      * The use-case owning this activity graph.
      * @return (ActivityGraphFacade)handleGetFirstActivityGraph()
      */
     public final ActivityGraphFacade getFirstActivityGraph()
     {
         ActivityGraphFacade getFirstActivityGraph4r = null;
         // useCase has no pre constraints
         Object result = handleGetFirstActivityGraph();
         MetafacadeBase shieldedResult = this.shieldedElement(result);
         try
         {
             getFirstActivityGraph4r = (ActivityGraphFacade)shieldedResult;
         }
         catch (ClassCastException ex)
         {
             // Bad things happen if the metafacade type mapping in metafacades.xml is wrong - Warn
             UseCaseFacadeLogic.logger.warn("incorrect metafacade cast for UseCaseFacadeLogic.getFirstActivityGraph ActivityGraphFacade " + result + ": " + shieldedResult);
         }
         // useCase has no post constraints
         return getFirstActivityGraph4r;
     }
 
     /**
      * UML Specific type is transformed by shieldedElements to AndroMDA Metafacade type
      * @return Object
      */
     protected abstract Object handleGetFirstActivityGraph();
 
     /**
      * @param validationMessages Collection<ModelValidationMessage>
      * @see NamespaceFacadeLogicImpl#validateInvariants(Collection validationMessages)
      */
     @Override
     public void validateInvariants(Collection<ModelValidationMessage> validationMessages)
     {
         super.validateInvariants(validationMessages);
     }
 }