package org.kuali.student.common.dictionary.service.impl;

 import java.beans.BeanInfo;

 import java.beans.IntrospectionException;

 import java.beans.Introspector;

 import java.beans.PropertyDescriptor;

 import java.lang.reflect.ParameterizedType;

 import java.util.Date;

 import java.util.LinkedHashSet;

 import java.util.List;

 import java.util.Set;

 import org.kuali.student.common.dto.MetaInfo;

 public class ComplexSubstructuresHelper

 {

  public Set<String> getComplexStructures (String className)

  {

   Set<String> complexStructures = new LinkedHashSet<String> ();

   loadComplexStructures (className, complexStructures);

   return complexStructures;

  }

  private void loadComplexStructures (String className,

                                      Set<String> complexStructures)

  {

   if ( ! complexStructures.add (className))

   {

    return;

   }

   BeanInfo beanInfo;

   Class<?> clazz;

   try

   {

    clazz = Class.forName (className);

   }

   catch (ClassNotFoundException ex)

   {

    System.out.println ("ComplexSubstructuresHelper: Could not process because the class must be a freestanding object: " + className);

    return;

   }

   try

   {

    beanInfo = Introspector.getBeanInfo (clazz);

   }

   catch (IntrospectionException ex)

   {

    throw new RuntimeException (ex);

   }

   for (PropertyDescriptor pd : beanInfo.getPropertyDescriptors ())

   {

    Class<?> subClass = pd.getPropertyType ();

    if (List.class.equals (subClass))

    {

     try

     {

      subClass =

      (Class<?>) ((ParameterizedType) clazz.getDeclaredField (

        pd.getName ()).getGenericType ()).getActualTypeArguments ()[0];

     }

     catch (NoSuchFieldException ex)

     {

      throw new RuntimeException (ex);

     }

     catch (SecurityException ex)

     {

      throw new RuntimeException (ex);

     }

    }

    if ( ! MetaInfo.class.equals (subClass)

        &&  ! Class.class.equals (subClass)

        &&  ! String.class.equals (subClass)

        &&  ! Integer.class.equals (subClass)

        &&  ! Long.class.equals (subClass)

        &&  ! Boolean.class.equals (subClass)

        &&  ! boolean.class.equals (subClass)

        &&  ! int.class.equals (subClass)

        &&  ! long.class.equals (subClass)

        &&  ! Double.class.equals (subClass)

        &&  ! Float.class.equals (subClass)

        &&  ! Date.class.equals (subClass)

        &&  ! DictionaryConstants.ATTRIBUTES.equals (pd.getName ())

        &&  ! Enum.class.isAssignableFrom (subClass)

        &&  ! Object.class.equals (subClass))

    {

     loadComplexStructures (subClass.getName (), complexStructures);

    }

   }

  }

 }