/**

  * Copyright 2005-2013 Dozer Project

  *

  * Licensed under the Apache License, Version 2.0 (the "License");

  * you may not use this file except in compliance with the License.

  * You may obtain a copy of the License at

  *

  *      http://www.apache.org/licenses/LICENSE-2.0

  *

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */

 package org.dozer.propertydescriptor;

 /**

  * @author Stuntmunkee

  */

 import org.dozer.fieldmap.FieldMap;

 import org.dozer.fieldmap.HintContainer;

 public class XmlBeanPropertyDescriptor implements DozerPropertyDescriptor {

   private static final String IS_SET_PREFIX = "set";

   private static final String DOT = ".";

   private final JavaBeanPropertyDescriptor fieldPropertyDescriptor;

   private final JavaBeanPropertyDescriptor isSetFieldPropertyDescriptor;

   public XmlBeanPropertyDescriptor(Class<?> clazz, String fieldName, boolean isIndexed, int index,

       HintContainer srcDeepIndexHintContainer, HintContainer destDeepIndexHintContainer) {

     fieldPropertyDescriptor = new JavaBeanPropertyDescriptor(clazz, fieldName, isIndexed, index, srcDeepIndexHintContainer,

         destDeepIndexHintContainer);

     isSetFieldPropertyDescriptor = new JavaBeanPropertyDescriptor(clazz, getIsSetFieldName(fieldName), isIndexed, index,

         srcDeepIndexHintContainer, destDeepIndexHintContainer);

   }

   public Class<?> getPropertyType() {

     return fieldPropertyDescriptor.getPropertyType();

   }

   public Object getPropertyValue(Object bean) {

     return isFieldSet(bean) ? fieldPropertyDescriptor.getPropertyValue(bean) : null;

   }

   public void setPropertyValue(Object bean, Object value, FieldMap fieldMap) {

     fieldPropertyDescriptor.setPropertyValue(bean, value, fieldMap);

   }

   private boolean isFieldSet(Object bean) {

     try {

       final Boolean isSetField = (Boolean) isSetFieldPropertyDescriptor.getPropertyValue(bean);

       return isSetField.booleanValue();

     } catch (Throwable e) {

       // The isSetField will not be present for all fields eg. Class.name -

       // that's ok.

       return true;

     }

   }

   private String getIsSetFieldName(final String fieldName) {

     if (fieldName == null) {

       return null;

     }

     // Does the field use dot notation eg. parent.child.field

     int lastDotIndex = fieldName.lastIndexOf(DOT);

     if ((lastDotIndex < 0) || (lastDotIndex == (fieldName.length() - 1))) {

       // No just return the setfield field name

       return IS_SET_PREFIX + fieldName;

     }

     // yes - return the parent.child.setfield field name

     return fieldName.substring(0, lastDotIndex + 1) + IS_SET_PREFIX + fieldName.substring(lastDotIndex + 1);

   }

   public Class<?> genericType() {

     return null;

   }

 }