package org.andromda.metafacades.uml14;
   
   import java.util.ArrayList;
   import java.util.Collection;
   import org.apache.commons.lang.StringUtils;
   import org.omg.uml.foundation.core.TagDefinition;
   import org.omg.uml.foundation.core.TaggedValue;
   
   /**
   * Metaclass facade implementation.
   * @author Bob Fields
   */
  public class TaggedValueFacadeLogicImpl
          extends TaggedValueFacadeLogic
  {
      private static final long serialVersionUID = -2281273076847314771L;
  
      /**
       * @param metaObject
       * @param context
       */
      public TaggedValueFacadeLogicImpl(TaggedValue metaObject, String context)
      {
          super(metaObject, context);
      }
  
      /**
       * @see org.andromda.metafacades.uml14.ModelElementFacadeLogic#handleGetName()
       */
      public String handleGetName()
      {
          String name = super.handleGetName();
          if (StringUtils.isEmpty(name))
          {
              final TagDefinition type = this.metaObject.getType();
              if (type != null)
              {
                  name = type.getName();
                  // sometimes it is the TagType
                  if (StringUtils.isEmpty(name))
                  {
                      name = type.getTagType();
                  }
              }
          }
          return name;
      }
  
      /**
       * @see org.andromda.metafacades.uml.TaggedValueFacade#getValues()
       */
      @Override
      public Collection handleGetValues()
      {
          final Collection values = new ArrayList();
          values.addAll(metaObject.getDataValue());
          values.addAll(this.shieldedElements(metaObject.getReferenceValue()));
          return values;
      }
  
      /**
       * @see org.andromda.metafacades.uml.TaggedValueFacade#getValue()
       */
      @Override
      public Object handleGetValue()
      {
          final Collection values = this.getValues();
          return (values.isEmpty()) ? null : values.iterator().next();
      }
  
  }