package org.andromda.metafacades.emf.uml22;
   
   import java.util.ArrayList;
   import java.util.Collection;
   import java.util.List;
   import org.andromda.metafacades.uml.ModelElementFacade;
   import org.andromda.metafacades.uml.UMLMetafacadeProperties;
   import org.apache.commons.collections.CollectionUtils;
   import org.apache.commons.lang.ObjectUtils;
  import org.apache.log4j.Logger;
  import org.eclipse.uml2.uml.Class;
  import org.eclipse.uml2.uml.Element;
  import org.eclipse.uml2.uml.Package;
  import org.eclipse.uml2.uml.internal.impl.BehaviorImpl;
  import org.eclipse.uml2.uml.internal.impl.ClassImpl;
  import org.eclipse.uml2.uml.internal.impl.ComponentImpl;
  import org.eclipse.uml2.uml.internal.impl.NodeImpl;
  import org.eclipse.uml2.uml.internal.impl.StereotypeImpl;
  
  /**
   * MetafacadeLogic implementation for
   * org.andromda.metafacades.uml.PackageFacade.
   *
   * @see org.andromda.metafacades.uml.PackageFacade
   * @author Bob Fields
   */
  public class PackageFacadeLogicImpl
      extends PackageFacadeLogic
  {
      private static final long serialVersionUID = 34L;
      /**
       * @param metaObject
       * @param context
       */
      public PackageFacadeLogicImpl(
          final Package metaObject,
          final String context)
      {
          super(metaObject, context);
      }
  
      /**
       * The logger instance.
       */
      private static final Logger LOGGER = Logger.getLogger(PackageFacadeLogicImpl.class);
  
      /**
       * @see org.andromda.metafacades.uml.PackageFacade#findModelElement(String)
       */
      @Override
      protected ModelElementFacade handleFindModelElement(
          final String fullyQualifiedName)
      {
          Object modelElement = null;
          if (PackageFacadeLogicImpl.LOGGER.isDebugEnabled())
          {
              PackageFacadeLogicImpl.LOGGER.debug("Looking for >> " + fullyQualifiedName);
          }
          modelElement =
              UmlUtilities.findByFullyQualifiedName(
                  this.metaObject.eResource().getResourceSet(),
                  fullyQualifiedName,
                  ObjectUtils.toString(this.getConfiguredProperty(UMLMetafacadeProperties.NAMESPACE_SEPARATOR)),
                  true);
          if (modelElement==null)
          {
              // Try again with fullyQualified PSM name, this may come from a taggedValue or some freeform entry.
              modelElement =
                  UmlUtilities.findByFullyQualifiedName(
                      this.metaObject.eResource().getResourceSet(),
                      fullyQualifiedName,
                      ObjectUtils.toString(this.getConfiguredProperty(UMLMetafacadeProperties.NAMESPACE_SEPARATOR)),
                      false);
          }
          if (PackageFacadeLogicImpl.LOGGER.isDebugEnabled())
          {
              PackageFacadeLogicImpl.LOGGER.debug("Found: '" + modelElement + '\'');
          }
          return (ModelElementFacade)this.shieldedElement(modelElement);
      }
  
      /**
       * Returns Andromda class types, not necessarily all UML2 Class/Classifier type objects.
       * Returns Classes, not UseCases, Activities, Behaviors, Components, Nodes.
       * @see org.andromda.metafacades.uml.PackageFacade#getClasses()
       */
      @Override
      protected Collection<Class> handleGetClasses()
      {
          final List<Class> classes = new ArrayList<Class>();
          for (Element element : this.metaObject.getOwnedElements())
          {
              // Behavior Activity is mapped to EventFacade, unlike UML2 it does not inherit from Class so it must be excluded.
              // TODO Fix inheritance hierarchy of EventFacade
              if ((element instanceof ClassImpl)
                  && !(element instanceof BehaviorImpl || element instanceof ComponentImpl || element instanceof NodeImpl || element instanceof StereotypeImpl))
              {
                  classes.add((Class)element);
              }
         }
         return classes;
     }
 
     /**
      * @see org.andromda.metafacades.uml.PackageFacade#getSubPackages()
      */
     @Override
     protected Collection<Package> handleGetSubPackages()
     {
         return this.metaObject.getNestedPackages();
     }
 
     /**
      * @see org.andromda.metafacades.uml.PackageFacade#getModelElements()
      */
     @Override
     protected Collection<? extends ModelElementFacade> handleGetModelElements()
     {
         return CollectionUtils.collect(UmlUtilities.findModel(this.metaObject)
                 .allOwnedElements(), UmlUtilities.ELEMENT_TRANSFORMER);
     }
 
     /**
      * @see org.andromda.metafacades.uml.PackageFacade#getOwnedElements()
      */
     @Override
     protected Collection<? extends ModelElementFacade> handleGetOwnedElements()
     {
         return CollectionUtils.collect(
             this.metaObject.getOwnedMembers(),
             UmlUtilities.ELEMENT_TRANSFORMER);
     }
 
     /**
      * @see org.andromda.metafacades.emf.uml22.PackageFacadeLogic#handleGetTablePrefix()
      */
     @Override
     protected String handleGetTablePrefix()
     {
         // TODO Auto-generated method stub
         return "";
     }
 }