// 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.Role;
  import org.andromda.translation.ocl.validation.OCLCollections;
  import org.andromda.translation.ocl.validation.OCLIntrospector;
  import org.andromda.translation.ocl.validation.OCLResultEnsurer;
  import org.apache.commons.collections.Transformer;
  import org.apache.log4j.Logger;
  import org.omg.uml.behavioralelements.usecases.Actor;
  
  /**
   * Represents a role a user may play within a system.  Provides access to things such as services
   * and service operations.
   * MetafacadeLogic for Role
   *
   * @see Role
   */
  public abstract class RoleLogic
      extends ActorFacadeLogicImpl
      implements Role
  {
      /**
       * The underlying UML object
       * @see Object
       */
      protected Object metaObject;
  
      /** Create Metafacade implementation instance using the MetafacadeFactory from the context
       * @param metaObjectIn
       * @param context
       */
      protected RoleLogic(Object metaObjectIn, String context)
      {
          super((Actor)metaObjectIn, getContext(context));
          this.metaObject = metaObjectIn;
      }
  
      /**
       * The logger instance.
       */
      private static final Logger logger = Logger.getLogger(RoleLogic.class);
  
      /**
       * Gets the context for this metafacade logic instance.
       * @param context String. Set to Role if null
       * @return context String
       */
      private static String getContext(String context)
      {
          if (context == null)
          {
              context = "org.andromda.metafacades.uml.Role";
          }
          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 Role
       */
      public boolean isRoleMetaType()
      {
          return true;
      }
  
      // --------------- attributes ---------------------
  
     /**
      * @see Role#isReferencesPresent()
      * @return boolean
      */
      protected abstract boolean handleIsReferencesPresent();
  
      private boolean __referencesPresent1a;
      private boolean __referencesPresent1aSet = false;
  
      /**
       * Indicates if the necessary references are present for the Role.  This include any references
       * to a service, service operation or use case.
      * @return (boolean)handleIsReferencesPresent()
      */
     public final boolean isReferencesPresent()
     {
         boolean referencesPresent1a = this.__referencesPresent1a;
         if (!this.__referencesPresent1aSet)
         {
             // referencesPresent has no pre constraints
             referencesPresent1a = handleIsReferencesPresent();
             // referencesPresent has no post constraints
             this.__referencesPresent1a = referencesPresent1a;
             if (isMetafacadePropertyCachingEnabled())
             {
                 this.__referencesPresent1aSet = true;
             }
         }
         return referencesPresent1a;
     }
 
     // ------------- associations ------------------
 
     /**
      * <p><b>Constraint:</b> org::andromda::metafacades::uml::Role::non-empty unique role name</p>
      * <p><b>Error:</b> Each role must have a non-empty name that is unique among all other roles.</p>
      * <p><b>OCL:</b> context Role inv: name->notEmpty() and model.allActors->isUnique(name)</p>
      * @param validationMessages Collection<ModelValidationMessage>
      * @see ActorFacadeLogicImpl#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,"name"))&&OCLCollections.isUnique(OCLIntrospector.invoke(contextElement,"model.allActors"),new Transformer(){public Object transform(Object object){return OCLIntrospector.invoke(object,"name");}}));
             if (!constraintValid)
             {
                 validationMessages.add(
                     new ModelValidationMessage(
                         (MetafacadeBase)contextElement ,
                         "org::andromda::metafacades::uml::Role::non-empty unique role name",
                         "Each role must have a non-empty name that is unique among all other roles."));
             }
         }
         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::Role::non-empty unique role name' ON "
                 + this.THIS().toString() + ": " + th.getMessage(), th);
         }
     }
 }