/*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF licenses this file to You 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.apache.commons.beanutils2;
  
  import java.beans.IndexedPropertyDescriptor;
  import java.beans.IntrospectionException;
  import java.beans.Introspector;
  import java.beans.PropertyDescriptor;
  import java.lang.reflect.Array;
  import java.lang.reflect.InvocationTargetException;
  import java.lang.reflect.Method;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.Objects;
  import java.util.concurrent.ConcurrentHashMap;
  import java.util.concurrent.CopyOnWriteArrayList;
  
  import org.apache.commons.beanutils2.expression.DefaultResolver;
  import org.apache.commons.beanutils2.expression.Resolver;
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  
  /**
   * Utility methods for using Java Reflection APIs to facilitate generic property getter and setter operations on Java objects. Much of this code was originally
   * included in {@code BeanUtils}, but has been separated because of the volume of code involved.
   * <p>
   * In general, the objects that are examined and modified using these methods are expected to conform to the property getter and setter method naming
   * conventions described in the JavaBeans Specification (Version 1.0.1). No data type conversions are performed, and there are no usage of any
   * {@code PropertyEditor} classes that have been registered, although a convenient way to access the registered classes themselves is included.
   * <p>
   * For the purposes of this class, five formats for referencing a particular property value of a bean are defined, with the <em>default</em> layout of an
   * identifying String in parentheses. However the notation for these formats and how they are resolved is now (since BeanUtils 1.8.0) controlled by the
   * configured {@link Resolver} implementation:
   * <ul>
   * <li><strong>Simple ({@code name})</strong> - The specified {@code name} identifies an individual property of a particular JavaBean. The name of the actual
   * getter or setter method to be used is determined using standard JavaBeans introspection, so that (unless overridden by a {@code BeanInfo} class, a property
   * named "xyz" will have a getter method named {@code getXyz()} or (for boolean properties only) {@code isXyz()}, and a setter method named
   * {@code setXyz()}.</li>
   * <li><strong>Nested ({@code name1.name2.name3})</strong> The first name element is used to select a property getter, as for simple references above. The
   * object returned for this property is then consulted, using the same approach, for a property getter for a property named {@code name2}, and so on. The
   * property value that is ultimately retrieved or modified is the one identified by the last name element.</li>
   * <li><strong>Indexed ({@code name[index]})</strong> - The underlying property value is assumed to be an array, or this JavaBean is assumed to have indexed
   * property getter and setter methods. The appropriate (zero-relative) entry in the array is selected. {@code List} objects are now also supported for
   * read/write. You simply need to define a getter that returns the {@code List}</li>
   * <li><strong>Mapped ({@code name(key)})</strong> - The JavaBean is assumed to have an property getter and setter methods with an additional attribute of type
   * {@link String}.</li>
   * <li><strong>Combined ({@code name1.name2[index].name3(key)})</strong> - Combining mapped, nested, and indexed references is also supported.</li>
   * </ul>
   *
   * @see Resolver
   * @see PropertyUtils
   * @since 1.7
   */
  public class PropertyUtilsBean {
  
      /** Log instance */
      private static final Log LOG = LogFactory.getLog(PropertyUtilsBean.class);
  
      /**
       * Gets the PropertyUtils bean instance.
       *
       * @return The PropertyUtils bean instance
       */
      protected static PropertyUtilsBean getInstance() {
          return BeanUtilsBean.getInstance().getPropertyUtils();
      }
  
      /**
       * Converts an object to a list of objects. This method is used when dealing with indexed properties. It assumes that indexed properties are stored as lists
       * of objects.
       *
       * @param obj the object to be converted
       * @return the resulting list of objects
       */
      @SuppressWarnings("unchecked")
      private static List<Object> toObjectList(final Object obj) {
          // indexed properties are stored in lists of objects
          return (List<Object>) obj;
      }
  
      /**
       * Converts an object to a map with property values. This method is used when dealing with mapped properties. It assumes that mapped properties are stored
       * in a Map&lt;String, Object&gt;.
      *
      * @param obj the object to be converted
      * @return the resulting properties map
      */
     @SuppressWarnings("unchecked")
     private static Map<String, Object> toPropertyMap(final Object obj) {
         // mapped properties are stores in maps of type <String, Object>
         return (Map<String, Object>) obj;
     }
 
     private Resolver resolver = new DefaultResolver();
 
     /**
      * The cache of PropertyDescriptor arrays for beans we have already introspected, keyed by the java.lang.Class of this object.
      */
     private final Map<Class<?>, BeanIntrospectionData> descriptorsCache;
 
     private final Map<Class<?>, Map> mappedDescriptorsCache;
 
     /** The list with BeanIntrospector objects. */
     private final List<BeanIntrospector> introspectors;
 
     /** Base constructor */
     public PropertyUtilsBean() {
         descriptorsCache = BeanUtils.createCache();
         mappedDescriptorsCache = BeanUtils.createCache();
         introspectors = new CopyOnWriteArrayList<>();
         resetBeanIntrospectors();
     }
 
     /**
      * Adds a {@code BeanIntrospector}. This object is invoked when the property descriptors of a class need to be obtained.
      *
      * @param introspector the {@code BeanIntrospector} to be added (must not be <strong>null</strong>
      * @throws IllegalArgumentException if the argument is <strong>null</strong>
      * @since 1.9
      */
     public void addBeanIntrospector(final BeanIntrospector introspector) {
         introspectors.add(Objects.requireNonNull(introspector, "introspector"));
     }
 
     /**
      * Clear any cached property descriptors information for all classes loaded by any class loaders. This is useful in cases where class loaders are thrown
      * away to implement class reloading.
      */
     public void clearDescriptors() {
         descriptorsCache.clear();
         mappedDescriptorsCache.clear();
         Introspector.flushCaches();
     }
 
     /**
      * <p>
      * Copy property values from the "origin" bean to the "destination" bean for all cases where the property names are the same (even though the actual getter
      * and setter methods might have been customized via {@code BeanInfo} classes). No conversions are performed on the actual property values -- it is assumed
      * that the values retrieved from the origin bean are assignment-compatible with the types expected by the destination bean.
      * </p>
      *
      * <p>
      * If the origin "bean" is actually a {@code Map}, it is assumed to contain String-valued <strong>simple</strong> property names as the keys, pointing at
      * the corresponding property values that will be set in the destination bean.<strong>Note</strong> that this method is intended to perform a "shallow copy"
      * of the properties and so complex properties (for example, nested ones) will not be copied.
      * </p>
      *
      * <p>
      * Note, that this method will not copy a List to a List, or an Object[] to an Object[]. It's specifically for copying JavaBean properties.
      * </p>
      *
      * @param dest Destination bean whose properties are modified
      * @param orig Origin bean whose properties are retrieved
      * @throws IllegalAccessException    if the caller does not have access to the property accessor method
      * @throws IllegalArgumentException  if the {@code dest} or {@code orig} argument is null
      * @throws InvocationTargetException if the property accessor method throws an exception
      * @throws NoSuchMethodException     if an accessor method for this property cannot be found
      */
     public void copyProperties(final Object dest, final Object orig) throws IllegalAccessException, InvocationTargetException,
             // TODO BEFORE 2.0
             // MISMATCH between implementation and Javadoc.
             NoSuchMethodException {
         Objects.requireNonNull(dest, "dest");
         Objects.requireNonNull(orig, "orig");
         if (orig instanceof DynaBean) {
             final DynaProperty[] origDescriptors = ((DynaBean) orig).getDynaClass().getDynaProperties();
             for (final DynaProperty origDescriptor : origDescriptors) {
                 final String name = origDescriptor.getName();
                 if (isReadable(orig, name) && isWriteable(dest, name)) {
                     try {
                         final Object value = ((DynaBean) orig).get(name);
                         if (dest instanceof DynaBean) {
                             ((DynaBean) dest).set(name, value);
                         } else {
                             setSimpleProperty(dest, name, value);
                         }
                     } catch (final NoSuchMethodException e) {
                         if (LOG.isDebugEnabled()) {
                             LOG.debug("Error writing to '" + name + "' on class '" + dest.getClass() + "'", e);
                         }
                     }
                 }
             }
         } else if (orig instanceof Map) {
             for (final Map.Entry<?, ?> entry : ((Map<?, ?>) orig).entrySet()) {
                 final String name = (String) entry.getKey();
                 if (isWriteable(dest, name)) {
                     try {
                         if (dest instanceof DynaBean) {
                             ((DynaBean) dest).set(name, entry.getValue());
                         } else {
                             setSimpleProperty(dest, name, entry.getValue());
                         }
                     } catch (final NoSuchMethodException e) {
                         if (LOG.isDebugEnabled()) {
                             LOG.debug("Error writing to '" + name + "' on class '" + dest.getClass() + "'", e);
                         }
                     }
                 }
             }
         } else /* if (orig is a standard JavaBean) */ {
             final PropertyDescriptor[] origDescriptors = getPropertyDescriptors(orig);
             for (final PropertyDescriptor origDescriptor : origDescriptors) {
                 final String name = origDescriptor.getName();
                 if (isReadable(orig, name) && isWriteable(dest, name)) {
                     try {
                         final Object value = getSimpleProperty(orig, name);
                         if (dest instanceof DynaBean) {
                             ((DynaBean) dest).set(name, value);
                         } else {
                             setSimpleProperty(dest, name, value);
                         }
                     } catch (final NoSuchMethodException e) {
                         if (LOG.isDebugEnabled()) {
                             LOG.debug("Error writing to '" + name + "' on class '" + dest.getClass() + "'", e);
                         }
                     }
                 }
             }
         }
 
     }
 
     /**
      * <p>
      * Return the entire set of properties for which the specified bean provides a read method. This map contains the unconverted property values for all
      * properties for which a read method is provided (i.e. where the {@code getReadMethod()} returns non-null).
      * </p>
      *
      * <p>
      * <strong>FIXME</strong> - Does not account for mapped properties.
      * </p>
      *
      * @param bean Bean whose properties are to be extracted
      * @return The set of properties for the bean
      * @throws IllegalAccessException    if the caller does not have access to the property accessor method
      * @throws IllegalArgumentException  if {@code bean} is null
      * @throws InvocationTargetException if the property accessor method throws an exception
      * @throws NoSuchMethodException     if an accessor method for this property cannot be found
      */
     public Map<String, Object> describe(final Object bean) throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
         Objects.requireNonNull(bean, "bean");
         final Map<String, Object> description = new HashMap<>();
         if (bean instanceof DynaBean) {
             final DynaProperty[] descriptors = ((DynaBean) bean).getDynaClass().getDynaProperties();
             for (final DynaProperty descriptor : descriptors) {
                 final String name = descriptor.getName();
                 description.put(name, getProperty(bean, name));
             }
         } else {
             final PropertyDescriptor[] descriptors = getPropertyDescriptors(bean);
             for (final PropertyDescriptor descriptor : descriptors) {
                 final String name = descriptor.getName();
                 if (descriptor.getReadMethod() != null) {
                     description.put(name, getProperty(bean, name));
                 }
             }
         }
         return description;
     }
 
     /**
      * Performs introspection on the specified class. This method invokes all {@code BeanIntrospector} objects that were added to this instance.
      *
      * @param beanClass the class to be inspected
      * @return a data object with the results of introspection
      */
     private BeanIntrospectionData fetchIntrospectionData(final Class<?> beanClass) {
         final DefaultIntrospectionContext ictx = new DefaultIntrospectionContext(beanClass);
 
         for (final BeanIntrospector bi : introspectors) {
             try {
                 bi.introspect(ictx);
             } catch (final IntrospectionException iex) {
                 LOG.error("Exception during introspection", iex);
             }
         }
 
         return new BeanIntrospectionData(ictx.getPropertyDescriptors());
     }
 
     /**
      * Gets the value of the specified indexed property of the specified bean, with no type conversions. The zero-relative index of the required value must be
      * included (in square brackets) as a suffix to the property name, or {@code IllegalArgumentException} will be thrown. In addition to supporting the
      * JavaBeans specification, this method has been extended to support {@code List} objects as well.
      *
      * @param bean Bean whose property is to be extracted
      * @param name {@code propertyname[index]} of the property value to be extracted
      * @return the indexed property value
      * @throws IndexOutOfBoundsException if the specified index is outside the valid range for the underlying array or List
      * @throws IllegalAccessException    if the caller does not have access to the property accessor method
      * @throws IllegalArgumentException  if {@code bean} or {@code name} is null
      * @throws InvocationTargetException if the property accessor method throws an exception
      * @throws NoSuchMethodException     if an accessor method for this property cannot be found
      */
     public Object getIndexedProperty(final Object bean, String name) throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
         Objects.requireNonNull(bean, "bean");
         Objects.requireNonNull(name, "name");
         // Identify the index of the requested individual property
         int index = -1;
         try {
             index = resolver.getIndex(name);
         } catch (final IllegalArgumentException e) {
             throw new IllegalArgumentException("Invalid indexed property '" + name + "' on bean class '" + bean.getClass() + "' " + e.getMessage());
         }
         if (index < 0) {
             throw new IllegalArgumentException("Invalid indexed property '" + name + "' on bean class '" + bean.getClass() + "'");
         }
 
         // Isolate the name
         name = resolver.getProperty(name);
 
         // Request the specified indexed property value
         return getIndexedProperty(bean, name, index);
     }
 
     /**
      * Gets the value of the specified indexed property of the specified bean, with no type conversions. In addition to supporting the JavaBeans specification,
      * this method has been extended to support {@code List} objects as well.
      *
      * @param bean  Bean whose property is to be extracted
      * @param name  Simple property name of the property value to be extracted
      * @param index Index of the property value to be extracted
      * @return the indexed property value
      * @throws IndexOutOfBoundsException if the specified index is outside the valid range for the underlying property
      * @throws IllegalAccessException    if the caller does not have access to the property accessor method
      * @throws IllegalArgumentException  if {@code bean} or {@code name} is null
      * @throws InvocationTargetException if the property accessor method throws an exception
      * @throws NoSuchMethodException     if an accessor method for this property cannot be found
      */
     public Object getIndexedProperty(final Object bean, final String name, final int index)
             throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
         Objects.requireNonNull(bean, "bean");
         if (name == null || name.isEmpty()) {
             if (bean.getClass().isArray()) {
                 return Array.get(bean, index);
             }
             if (bean instanceof List) {
                 return ((List<?>) bean).get(index);
             }
         }
         Objects.requireNonNull(name, "name");
         // Handle DynaBean instances specially
         if (bean instanceof DynaBean) {
             final DynaProperty descriptor = ((DynaBean) bean).getDynaClass().getDynaProperty(name);
             if (descriptor == null) {
                 throw new NoSuchMethodException("Unknown property '" + name + "' on bean class '" + bean.getClass() + "'");
             }
             return ((DynaBean) bean).get(name, index);
         }
 
         // Retrieve the property descriptor for the specified property
         final PropertyDescriptor descriptor = getPropertyDescriptor(bean, name);
         if (descriptor == null) {
             throw new NoSuchMethodException("Unknown property '" + name + "' on bean class '" + bean.getClass() + "'");
         }
 
         // Call the indexed getter method if there is one
         if (descriptor instanceof IndexedPropertyDescriptor) {
             Method readMethod = ((IndexedPropertyDescriptor) descriptor).getIndexedReadMethod();
             readMethod = MethodUtils.getAccessibleMethod(bean.getClass(), readMethod);
             if (readMethod != null) {
                 try {
                     return invokeMethod(readMethod, bean, Integer.valueOf(index));
                 } catch (final InvocationTargetException e) {
                     if (e.getTargetException() instanceof IndexOutOfBoundsException) {
                         throw (IndexOutOfBoundsException) e.getTargetException();
                     }
                     throw e;
                 }
             }
         }
 
         // Otherwise, the underlying property must be an array
         final Method readMethod = getReadMethod(bean.getClass(), descriptor);
         if (readMethod == null) {
             throw new NoSuchMethodException("Property '" + name + "' has no " + "getter method on bean class '" + bean.getClass() + "'");
         }
 
         // Call the property getter and return the value
         final Object value = invokeMethod(readMethod, bean, BeanUtils.EMPTY_OBJECT_ARRAY);
         if (!value.getClass().isArray()) {
             if (!(value instanceof List)) {
                 throw new IllegalArgumentException("Property '" + name + "' is not indexed on bean class '" + bean.getClass() + "'");
             }
             // get the List's value
             return ((List<?>) value).get(index);
         }
         // get the array's value
         try {
             return Array.get(value, index);
         } catch (final ArrayIndexOutOfBoundsException e) {
             throw new ArrayIndexOutOfBoundsException("Index: " + index + ", Size: " + Array.getLength(value) + " for property '" + name + "'");
         }
     }
 
     /**
      * Obtains the {@code BeanIntrospectionData} object describing the specified bean class. This object is looked up in the internal cache. If necessary,
      * introspection is performed now on the affected bean class, and the results object is created.
      *
      * @param beanClass the bean class in question
      * @return the {@code BeanIntrospectionData} object for this class
      * @throws IllegalArgumentException if the bean class is <strong>null</strong>
      */
     private BeanIntrospectionData getIntrospectionData(final Class<?> beanClass) {
         Objects.requireNonNull(beanClass, "beanClass");
         // Look up any cached information for this bean class
         BeanIntrospectionData data = descriptorsCache.get(beanClass);
         if (data == null) {
             data = fetchIntrospectionData(beanClass);
             descriptorsCache.put(beanClass, data);
         }
         return data;
     }
 
     /**
      * Gets the value of the specified mapped property of the specified bean, with no type conversions. The key of the required value must be included (in
      * brackets) as a suffix to the property name, or {@code IllegalArgumentException} will be thrown.
      *
      * @param bean Bean whose property is to be extracted
      * @param name {@code propertyname(key)} of the property value to be extracted
      * @return the mapped property value
      * @throws IllegalAccessException    if the caller does not have access to the property accessor method
      * @throws InvocationTargetException if the property accessor method throws an exception
      * @throws NoSuchMethodException     if an accessor method for this property cannot be found
      */
     public Object getMappedProperty(final Object bean, String name) throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
         Objects.requireNonNull(bean, "bean");
         Objects.requireNonNull(name, "name");
         // Identify the key of the requested individual property
         String key = null;
         try {
             key = resolver.getKey(name);
         } catch (final IllegalArgumentException e) {
             throw new IllegalArgumentException("Invalid mapped property '" + name + "' on bean class '" + bean.getClass() + "' " + e.getMessage());
         }
         if (key == null) {
             throw new IllegalArgumentException("Invalid mapped property '" + name + "' on bean class '" + bean.getClass() + "'");
         }
 
         // Isolate the name
         name = resolver.getProperty(name);
 
         // Request the specified indexed property value
         return getMappedProperty(bean, name, key);
     }
 
     /**
      * Gets the value of the specified mapped property of the specified bean, with no type conversions.
      *
      * @param bean Bean whose property is to be extracted
      * @param name Mapped property name of the property value to be extracted
      * @param key  Key of the property value to be extracted
      * @return the mapped property value
      * @throws IllegalAccessException    if the caller does not have access to the property accessor method
      * @throws InvocationTargetException if the property accessor method throws an exception
      * @throws NoSuchMethodException     if an accessor method for this property cannot be found
      */
     public Object getMappedProperty(final Object bean, final String name, final String key)
             throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
         Objects.requireNonNull(bean, "bean");
         Objects.requireNonNull(name, "name");
         Objects.requireNonNull(key, "key");
         // Handle DynaBean instances specially
         if (bean instanceof DynaBean) {
             final DynaProperty descriptor = ((DynaBean) bean).getDynaClass().getDynaProperty(name);
             if (descriptor == null) {
                 throw new NoSuchMethodException("Unknown property '" + name + "'+ on bean class '" + bean.getClass() + "'");
             }
             return ((DynaBean) bean).get(name, key);
         }
 
         Object result = null;
 
         // Retrieve the property descriptor for the specified property
         final PropertyDescriptor descriptor = getPropertyDescriptor(bean, name);
         if (descriptor == null) {
             throw new NoSuchMethodException("Unknown property '" + name + "'+ on bean class '" + bean.getClass() + "'");
         }
 
         if (descriptor instanceof MappedPropertyDescriptor) {
             // Call the keyed getter method if there is one
             Method readMethod = ((MappedPropertyDescriptor) descriptor).getMappedReadMethod();
             readMethod = MethodUtils.getAccessibleMethod(bean.getClass(), readMethod);
             if (readMethod == null) {
                 throw new NoSuchMethodException("Property '" + name + "' has no mapped getter method on bean class '" + bean.getClass() + "'");
             }
             result = invokeMethod(readMethod, bean, key);
         } else {
             /* means that the result has to be retrieved from a map */
             final Method readMethod = getReadMethod(bean.getClass(), descriptor);
             if (readMethod == null) {
                 throw new NoSuchMethodException("Property '" + name + "' has no mapped getter method on bean class '" + bean.getClass() + "'");
             }
             final Object invokeResult = invokeMethod(readMethod, bean, BeanUtils.EMPTY_OBJECT_ARRAY);
             /* test and fetch from the map */
             if (invokeResult instanceof Map) {
                 result = ((Map<?, ?>) invokeResult).get(key);
             }
         }
         return result;
     }
 
     /**
      * <p>
      * Return the mapped property descriptors for this bean class.
      * </p>
      *
      * <p>
      * <strong>FIXME</strong> - Does not work with DynaBeans.
      * </p>
      *
      * @param beanClass Bean class to be introspected
      * @return the mapped property descriptors
      */
     Map<Class<?>, Map> getMappedPropertyDescriptors(final Class<?> beanClass) {
         if (beanClass == null) {
             return null;
         }
         // Look up any cached descriptors for this bean class
         return mappedDescriptorsCache.get(beanClass);
     }
 
     /**
      * <p>
      * Return the mapped property descriptors for this bean.
      * </p>
      *
      * <p>
      * <strong>FIXME</strong> - Does not work with DynaBeans.
      * </p>
      *
      * @param bean Bean to be introspected
      * @return the mapped property descriptors
      */
     Map getMappedPropertyDescriptors(final Object bean) {
         if (bean == null) {
             return null;
         }
         return getMappedPropertyDescriptors(bean.getClass());
     }
 
     /**
      * Gets the value of the (possibly nested) property of the specified name, for the specified bean, with no type conversions.
      *
      * @param bean Bean whose property is to be extracted
      * @param name Possibly nested name of the property to be extracted
      * @return the nested property value
      * @throws IllegalAccessException    if the caller does not have access to the property accessor method
      * @throws IllegalArgumentException  if {@code bean} or {@code name} is null
      * @throws NestedNullException       if a nested reference to a property returns null
      * @throws InvocationTargetException if the property accessor method throws an exception
      * @throws NoSuchMethodException     if an accessor method for this property cannot be found
      */
     public Object getNestedProperty(Object bean, String name) throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
         Objects.requireNonNull(bean, "bean");
         Objects.requireNonNull(name, "name");
         // Resolve nested references
         while (resolver.hasNested(name)) {
             final String next = resolver.next(name);
             Object nestedBean = null;
             if (bean instanceof Map) {
                 nestedBean = getPropertyOfMapBean((Map<?, ?>) bean, next);
             } else if (resolver.isMapped(next)) {
                 nestedBean = getMappedProperty(bean, next);
             } else if (resolver.isIndexed(next)) {
                 nestedBean = getIndexedProperty(bean, next);
             } else {
                 nestedBean = getSimpleProperty(bean, next);
             }
             if (nestedBean == null) {
                 throw new NestedNullException("Null property value for '" + name + "' on bean class '" + bean.getClass() + "'");
             }
             bean = nestedBean;
             name = resolver.remove(name);
         }
 
         if (bean instanceof Map) {
             bean = getPropertyOfMapBean((Map<?, ?>) bean, name);
         } else if (resolver.isMapped(name)) {
             bean = getMappedProperty(bean, name);
         } else if (resolver.isIndexed(name)) {
             bean = getIndexedProperty(bean, name);
         } else {
             bean = getSimpleProperty(bean, name);
         }
         return bean;
     }
 
     /**
      * Gets the value of the specified property of the specified bean, no matter which property reference format is used, with no type conversions.
      *
      * @param bean Bean whose property is to be extracted
      * @param name Possibly indexed and/or nested name of the property to be extracted
      * @return the property value
      * @throws IllegalAccessException    if the caller does not have access to the property accessor method
      * @throws IllegalArgumentException  if {@code bean} or {@code name} is null
      * @throws InvocationTargetException if the property accessor method throws an exception
      * @throws NoSuchMethodException     if an accessor method for this property cannot be found
      */
     public Object getProperty(final Object bean, final String name) throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
         return getNestedProperty(bean, name);
     }
 
     /**
      * <p>
      * Retrieve the property descriptor for the specified property of the specified bean, or return {@code null} if there is no such descriptor. This method
      * resolves indexed and nested property references in the same manner as other methods in this class, except that if the last (or only) name element is
      * indexed, the descriptor for the last resolved property itself is returned.
      * </p>
      *
      * <p>
      * <strong>FIXME</strong> - Does not work with DynaBeans.
      * </p>
      *
      * <p>
      * Note that for Java 8 and above, this method no longer return IndexedPropertyDescriptor for {@link List}-typed properties, only for properties typed as
      * native array. (BEANUTILS-492).
      *
      * @param bean Bean for which a property descriptor is requested
      * @param name Possibly indexed and/or nested name of the property for which a property descriptor is requested
      * @return the property descriptor
      * @throws IllegalAccessException    if the caller does not have access to the property accessor method
      * @throws IllegalArgumentException  if {@code bean} or {@code name} is null
      * @throws IllegalArgumentException  if a nested reference to a property returns null
      * @throws InvocationTargetException if the property accessor method throws an exception
      * @throws NoSuchMethodException     if an accessor method for this property cannot be found
      */
     public PropertyDescriptor getPropertyDescriptor(Object bean, String name) throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
         Objects.requireNonNull(bean, "bean");
         Objects.requireNonNull(name, "name");
         // Resolve nested references
         while (resolver.hasNested(name)) {
             final String next = resolver.next(name);
             final Object nestedBean = getProperty(bean, next);
             if (nestedBean == null) {
                 throw new NestedNullException("Null property value for '" + next + "' on bean class '" + bean.getClass() + "'");
             }
             bean = nestedBean;
             name = resolver.remove(name);
         }
 
         // Remove any subscript from the final name value
         name = resolver.getProperty(name);
 
         // Look up and return this property from our cache
         // creating and adding it to the cache if not found.
         if (name == null) {
             return null;
         }
 
         final BeanIntrospectionData data = getIntrospectionData(bean.getClass());
         PropertyDescriptor result = data.getDescriptor(name);
         if (result != null) {
             return result;
         }
 
         Map mappedDescriptors = getMappedPropertyDescriptors(bean);
         if (mappedDescriptors == null) {
             mappedDescriptors = new ConcurrentHashMap<Class<?>, Map>();
             mappedDescriptorsCache.put(bean.getClass(), mappedDescriptors);
         }
         result = (PropertyDescriptor) mappedDescriptors.get(name);
         if (result == null) {
             // not found, try to create it
             try {
                 result = new MappedPropertyDescriptor(name, bean.getClass());
             } catch (final IntrospectionException ie) {
                 /*
                  * Swallow IntrospectionException TODO: Why?
                  */
             }
             if (result != null) {
                 mappedDescriptors.put(name, result);
             }
         }
 
         return result;
     }
 
     /**
      * <p>
      * Retrieve the property descriptors for the specified class, introspecting and caching them the first time a particular bean class is encountered.
      * </p>
      *
      * <p>
      * <strong>FIXME</strong> - Does not work with DynaBeans.
      * </p>
      *
      * @param beanClass Bean class for which property descriptors are requested
      * @return the property descriptors
      * @throws IllegalArgumentException if {@code beanClass} is null
      */
     public PropertyDescriptor[] getPropertyDescriptors(final Class<?> beanClass) {
         return getIntrospectionData(beanClass).getDescriptors();
     }
 
     /**
      * <p>
      * Retrieve the property descriptors for the specified bean, introspecting and caching them the first time a particular bean class is encountered.
      * </p>
      *
      * <p>
      * <strong>FIXME</strong> - Does not work with DynaBeans.
      * </p>
      *
      * @param bean Bean for which property descriptors are requested
      * @return the property descriptors
      * @throws IllegalArgumentException if {@code bean} is null
      */
     public PropertyDescriptor[] getPropertyDescriptors(final Object bean) {
         Objects.requireNonNull(bean, "bean");
         return getPropertyDescriptors(bean.getClass());
     }
 
     /**
      * <p>
      * Return the Java Class repesenting the property editor class that has been registered for this property (if any). This method follows the same name
      * resolution rules used by {@code getPropertyDescriptor()}, so if the last element of a name reference is indexed, the property editor for the underlying
      * property's class is returned.
      * </p>
      *
      * <p>
      * Note that {@code null} will be returned if there is no property, or if there is no registered property editor class. Because this return value is
      * ambiguous, you should determine the existence of the property itself by other means.
      * </p>
      *
      * <p>
      * <strong>FIXME</strong> - Does not work with DynaBeans.
      * </p>
      *
      * @param bean Bean for which a property descriptor is requested
      * @param name Possibly indexed and/or nested name of the property for which a property descriptor is requested
      * @return the property editor class
      * @throws IllegalAccessException    if the caller does not have access to the property accessor method
      * @throws IllegalArgumentException  if {@code bean} or {@code name} is null
      * @throws IllegalArgumentException  if a nested reference to a property returns null
      * @throws InvocationTargetException if the property accessor method throws an exception
      * @throws NoSuchMethodException     if an accessor method for this property cannot be found
      */
     public Class<?> getPropertyEditorClass(final Object bean, final String name)
             throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
         Objects.requireNonNull(bean, "bean");
         Objects.requireNonNull(name, "name");
         final PropertyDescriptor descriptor = getPropertyDescriptor(bean, name);
         if (descriptor != null) {
             return descriptor.getPropertyEditorClass();
         }
         return null;
     }
 
     /**
      * This method is called by getNestedProperty and setNestedProperty to define what it means to get a property from an object which implements Map. See
      * setPropertyOfMapBean for more information.
      *
      * @param bean         Map bean
      * @param propertyName The property name
      * @return the property value
      * @throws IllegalArgumentException  when the propertyName is regarded as being invalid.
      * @throws IllegalAccessException    just in case subclasses override this method to try to access real getter methods and find permission is denied.
      * @throws InvocationTargetException just in case subclasses override this method to try to access real getter methods, and find it throws an exception when
      *                                   invoked.
      *
      * @throws NoSuchMethodException     just in case subclasses override this method to try to access real getter methods, and want to fail if no simple method
      *                                   is available.
      * @since 1.8.0
      */
     protected Object getPropertyOfMapBean(final Map<?, ?> bean, String propertyName)
             throws IllegalArgumentException, IllegalAccessException, InvocationTargetException, NoSuchMethodException {
 
         if (resolver.isMapped(propertyName)) {
             final String name = resolver.getProperty(propertyName);
             if (name == null || name.isEmpty()) {
                 propertyName = resolver.getKey(propertyName);
             }
         }
 
         if (resolver.isIndexed(propertyName) || resolver.isMapped(propertyName)) {
             throw new IllegalArgumentException("Indexed or mapped properties are not supported on" + " objects of type Map: " + propertyName);
         }
 
         return bean.get(propertyName);
     }
 
     /**
      * Gets the Java Class representing the property type of the specified property, or {@code null} if there is no such property for the specified bean. This
      * method follows the same name resolution rules used by {@code getPropertyDescriptor()}, so if the last element of a name reference is indexed, the type of
      * the property itself will be returned. If the last (or only) element has no property with the specified name, {@code null} is returned.
      * <p>
      * If the property is an indexed property (for example {@code String[]}), this method will return the type of the items within that array. Note that from
      * Java 8 and newer, this method do not support such index types from items within an Collection, and will instead return the collection type (for example
      * java.util.List) from the getter method.
      * </p>
      *
      * @param bean Bean for which a property descriptor is requested
      * @param name Possibly indexed and/or nested name of the property for which a property descriptor is requested
      * @return The property type
      * @throws IllegalAccessException    if the caller does not have access to the property accessor method
      * @throws IllegalArgumentException  if {@code bean} or {@code name} is null
      * @throws IllegalArgumentException  if a nested reference to a property returns null
      * @throws InvocationTargetException if the property accessor method throws an exception
      * @throws NoSuchMethodException     if an accessor method for this property cannot be found
      */
     public Class<?> getPropertyType(Object bean, String name) throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
         Objects.requireNonNull(bean, "bean");
         Objects.requireNonNull(name, "name");
         // Resolve nested references
         while (resolver.hasNested(name)) {
             final String next = resolver.next(name);
             final Object nestedBean = getProperty(bean, next);
             if (nestedBean == null) {
                 throw new NestedNullException("Null property value for '" + next + "' on bean class '" + bean.getClass() + "'");
             }
             bean = nestedBean;
             name = resolver.remove(name);
         }
 
         // Remove any subscript from the final name value
         name = resolver.getProperty(name);
 
         // Special handling for DynaBeans
         if (bean instanceof DynaBean) {
             final DynaProperty descriptor = ((DynaBean) bean).getDynaClass().getDynaProperty(name);
             if (descriptor == null) {
                 return null;
             }
             final Class<?> type = descriptor.getType();
             if (type == null) {
                 return null;
             }
             if (type.isArray()) {
                 return type.getComponentType();
             }
             return type;
         }
 
         final PropertyDescriptor descriptor = getPropertyDescriptor(bean, name);
         if (descriptor == null) {
             return null;
         }
         if (descriptor instanceof IndexedPropertyDescriptor) {
             return ((IndexedPropertyDescriptor) descriptor).getIndexedPropertyType();
         }
         if (descriptor instanceof MappedPropertyDescriptor) {
             return ((MappedPropertyDescriptor) descriptor).getMappedPropertyType();
         }
         return descriptor.getPropertyType();
     }
 
     /**
      * <p>
      * Return the property getter method for this property if accessible from given {@code clazz} (and if there is one at all); otherwise return {@code null}.
      * </p>
      *
      * <p>
      * <strong>FIXME</strong> - Does not work with DynaBeans.
      * </p>
      *
      * <p>
      * This fairly low-level method shouldn't be needed for most usecases. However, if you do have to implement something extra, you can improve consistency
      * with the standard code (for example that of {@link #getProperty getProperty()}) by calling this method instead of using
      * {@code descriptor.getReadMethod()} directly.
      * </p>
      *
      * @param clazz      The class of the read method will be invoked on
      * @param descriptor Property descriptor to return a getter for
      * @return The read method
      * @since 2.0.0
      */
     public Method getReadMethod(final Class<?> clazz, final PropertyDescriptor descriptor) {
         return MethodUtils.getAccessibleMethod(clazz, descriptor.getReadMethod());
     }
 
     /**
      * <p>
      * Return an accessible property getter method for this property, if there is one; otherwise return {@code null}.
      * </p>
      *
      * <p>
      * <strong>FIXME</strong> - Does not work with DynaBeans.
      * </p>
      *
      * @param descriptor Property descriptor to return a getter for
      * @return The read method
      */
     public Method getReadMethod(final PropertyDescriptor descriptor) {
         return MethodUtils.getAccessibleMethod(descriptor.getReadMethod());
     }
 
     /**
      * Gets the configured {@link Resolver} implementation used by BeanUtils.
      * <p>
      * The {@link Resolver} handles the <em>property name</em> expressions and the implementation in use effectively controls the dialect of the <em>expression
      * language</em> that BeanUtils recognizes.
      * <p>
      * {@link DefaultResolver} is the default implementation used.
      *
      * @return resolver The property expression resolver.
      * @since 1.8.0
      */
     public Resolver getResolver() {
         return resolver;
     }
 
     /**
      * Gets the value of the specified simple property of the specified bean, with no type conversions.
      *
      * @param bean Bean whose property is to be extracted
      * @param name Name of the property to be extracted
      * @return The property value
      * @throws IllegalAccessException    if the caller does not have access to the property accessor method
      * @throws IllegalArgumentException  if {@code bean} or {@code name} is null
      * @throws IllegalArgumentException  if the property name is nested or indexed
      * @throws InvocationTargetException if the property accessor method throws an exception
      * @throws NoSuchMethodException     if an accessor method for this property cannot be found
      */
     public Object getSimpleProperty(final Object bean, final String name) throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
         Objects.requireNonNull(bean, "bean");
         Objects.requireNonNull(name, "name");
         // Validate the syntax of the property name
         if (resolver.hasNested(name)) {
             throw new IllegalArgumentException("Nested property names are not allowed: Property '" + name + "' on bean class '" + bean.getClass() + "'");
         }
         if (resolver.isIndexed(name)) {
             throw new IllegalArgumentException("Indexed property names are not allowed: Property '" + name + "' on bean class '" + bean.getClass() + "'");
         }
         if (resolver.isMapped(name)) {
             throw new IllegalArgumentException("Mapped property names are not allowed: Property '" + name + "' on bean class '" + bean.getClass() + "'");
         }
 
         // Handle DynaBean instances specially
         if (bean instanceof DynaBean) {
             final DynaProperty descriptor = ((DynaBean) bean).getDynaClass().getDynaProperty(name);
             if (descriptor == null) {
                 throw new NoSuchMethodException("Unknown property '" + name + "' on dynaclass '" + ((DynaBean) bean).getDynaClass() + "'");
             }
             return ((DynaBean) bean).get(name);
         }
 
         // Retrieve the property getter method for the specified property
         final PropertyDescriptor descriptor = getPropertyDescriptor(bean, name);
         if (descriptor == null) {
             throw new NoSuchMethodException("Unknown property '" + name + "' on class '" + bean.getClass() + "'");
         }
         final Method readMethod = getReadMethod(bean.getClass(), descriptor);
         if (readMethod == null) {
             throw new NoSuchMethodException("Property '" + name + "' has no getter method in class '" + bean.getClass() + "'");
         }
 
         // Call the property getter and return the value
         return invokeMethod(readMethod, bean, BeanUtils.EMPTY_OBJECT_ARRAY);
     }
 
     /**
      * <p>
      * Return the property setter method for this property if accessible from given {@code clazz} (and if there is one at all); otherwise return {@code null}.
      * </p>
      *
      * <p>
      * <strong>FIXME</strong> - Does not work with DynaBeans.
      * </p>
      *
      * <p>
      * This fairly low-level method shouldn't be needed for most usecases. However, if you do have to implement something extra, you can improve consistency
      * with the standard code (for example that of {@link #setProperty setProperty()}) by calling this method instead of using
      * {@code descriptor.getWriteMethod()} directly.
      * </p>
      *
      * @param clazz      The class of the read method will be invoked on
      * @param descriptor Property descriptor to return a setter for
      * @return The write method
      * @since 1.9.1
      */
     public Method getWriteMethod(final Class<?> clazz, final PropertyDescriptor descriptor) {
         final BeanIntrospectionData data = getIntrospectionData(clazz);
         return MethodUtils.getAccessibleMethod(clazz, data.getWriteMethod(clazz, descriptor));
     }
 
     /**
      * <p>
      * Return an accessible property setter method for this property, if there is one; otherwise return {@code null}.
      * </p>
      *
      * <p>
      * <em>Note:</em> This method does not work correctly with custom bean introspection under certain circumstances. It may return {@code null} even if a write
      * method is defined for the property in question. Use {@link #getWriteMethod(Class, PropertyDescriptor)} to be sure that the correct result is returned.
      * </p>
      * <p>
      * <strong>FIXME</strong> - Does not work with DynaBeans.
      * </p>
      *
      * @param descriptor Property descriptor to return a setter for
      * @return The write method
      */
     public Method getWriteMethod(final PropertyDescriptor descriptor) {
         return MethodUtils.getAccessibleMethod(descriptor.getWriteMethod());
     }
 
     /**
      * Delegates to {@link Method#invoke(Object, Object...)} and handles some unchecked exceptions.
      *
      * @see Method#invoke(Object, Object...)
      */
     private Object invokeMethod(final Method method, final Object bean, final Object... values) throws IllegalAccessException, InvocationTargetException {
         Objects.requireNonNull(bean, "bean");
         try {
             return method.invoke(bean, values);
         } catch (final NullPointerException | IllegalArgumentException cause) {
             // JDK 1.3 and JDK 1.4 throw NullPointerException if an argument is
             // null for a primitive value (JDK 1.5+ throw IllegalArgumentException)
             final StringBuilder valueString = new StringBuilder();
             if (values != null) {
                 for (int i = 0; i < values.length; i++) {
                     if (i > 0) {
                         valueString.append(", ");
                     }
                     if (values[i] == null) {
                         valueString.append("<null>");
                     } else {
                         valueString.append(values[i].getClass().getName());
                     }
                 }
             }
             final StringBuilder expectedString = new StringBuilder();
             final Class<?>[] parTypes = method.getParameterTypes();
             if (parTypes != null) {
                 for (int i = 0; i < parTypes.length; i++) {
                     if (i > 0) {
                         expectedString.append(", ");
                     }
                     expectedString.append(parTypes[i].getName());
                 }
             }
             throw new IllegalArgumentException("Cannot invoke " + method.getDeclaringClass().getName() + "." + method.getName() + " on bean class '"
                     + bean.getClass() + "' - " + cause.getMessage()
                     // as per https://issues.apache.org/jira/browse/BEANUTILS-224
                     + " - had objects of type \"" + valueString + "\" but expected signature \"" + expectedString + "\"", cause);
         }
     }
 
     /**
      * Return {@code true} if the specified property name identifies a readable property on the specified bean; otherwise, return {@code false}.
      *
      * @param bean Bean to be examined (may be a {@link DynaBean}
      * @param name Property name to be evaluated
      * @return {@code true} if the property is readable, otherwise {@code false}
      * @throws IllegalArgumentException if {@code bean} or {@code name</code> is <code>null}
      * @since 1.6
      */
     public boolean isReadable(Object bean, String name) {
         // Validate method parameters
         Objects.requireNonNull(bean, "bean");
         Objects.requireNonNull(name, "name");
         // Resolve nested references
         while (resolver.hasNested(name)) {
             final String next = resolver.next(name);
             Object nestedBean = null;
             try {
                 nestedBean = getProperty(bean, next);
             } catch (final IllegalAccessException | NoSuchMethodException | InvocationTargetException e) {
                 return false;
             }
             if (nestedBean == null) {
                 throw new NestedNullException("Null property value for '" + next + "' on bean class '" + bean.getClass() + "'");
             }
             bean = nestedBean;
             name = resolver.remove(name);
         }
 
         // Remove any subscript from the final name value
         name = resolver.getProperty(name);
 
         // Treat WrapDynaBean as special case - may be a write-only property
         // (see Jira issue# BEANUTILS-61)
         if (bean instanceof WrapDynaBean) {
             bean = ((WrapDynaBean) bean).getInstance();
         }
 
         // Return the requested result
         if (bean instanceof DynaBean) {
             // All DynaBean properties are readable
             return ((DynaBean) bean).getDynaClass().getDynaProperty(name) != null;
         }
         try {
             final PropertyDescriptor desc = getPropertyDescriptor(bean, name);
             if (desc != null) {
                 Method readMethod = getReadMethod(bean.getClass(), desc);
                 if (readMethod == null) {
                     if (desc instanceof IndexedPropertyDescriptor) {
                         readMethod = ((IndexedPropertyDescriptor) desc).getIndexedReadMethod();
                     } else if (desc instanceof MappedPropertyDescriptor) {
                         readMethod = ((MappedPropertyDescriptor) desc).getMappedReadMethod();
                     }
                     readMethod = MethodUtils.getAccessibleMethod(bean.getClass(), readMethod);
                 }
                 return readMethod != null;
             }
             return false;
         } catch (final IllegalAccessException | NoSuchMethodException | InvocationTargetException e) {
             return false;
         }
     }
 
     /**
      * Return {@code true} if the specified property name identifies a writable property on the specified bean; otherwise, return {@code false}.
      *
      * @param bean Bean to be examined (may be a {@link DynaBean}
      * @param name Property name to be evaluated
      * @return {@code true} if the property is writable, otherwise {@code false}
      * @throws IllegalArgumentException if {@code bean} or {@code name</code> is <code>null}
      * @since 1.6
      */
     public boolean isWriteable(Object bean, String name) {
         // Validate method parameters
         Objects.requireNonNull(bean, "bean");
         Objects.requireNonNull(name, "name");
         // Resolve nested references
         while (resolver.hasNested(name)) {
             final String next = resolver.next(name);
             Object nestedBean = null;
             try {
                 nestedBean = getProperty(bean, next);
             } catch (final IllegalAccessException | NoSuchMethodException | InvocationTargetException e) {
                 return false;
             }
             if (nestedBean == null) {
                 throw new NestedNullException("Null property value for '" + next + "' on bean class '" + bean.getClass() + "'");
             }
             bean = nestedBean;
             name = resolver.remove(name);
         }
 
         // Remove any subscript from the final name value
         name = resolver.getProperty(name);
 
         // Treat WrapDynaBean as special case - may be a read-only property
         // (see Jira issue# BEANUTILS-61)
         if (bean instanceof WrapDynaBean) {
             bean = ((WrapDynaBean) bean).getInstance();
         }
 
         // Return the requested result
         if (bean instanceof DynaBean) {
             // All DynaBean properties are writable
             return ((DynaBean) bean).getDynaClass().getDynaProperty(name) != null;
         }
         try {
             final PropertyDescriptor desc = getPropertyDescriptor(bean, name);
             if (desc != null) {
                 Method writeMethod = getWriteMethod(bean.getClass(), desc);
                 if (writeMethod == null) {
                     if (desc instanceof IndexedPropertyDescriptor) {
                         writeMethod = ((IndexedPropertyDescriptor) desc).getIndexedWriteMethod();
                     } else if (desc instanceof MappedPropertyDescriptor) {
                         writeMethod = ((MappedPropertyDescriptor) desc).getMappedWriteMethod();
                     }
                     writeMethod = MethodUtils.getAccessibleMethod(bean.getClass(), writeMethod);
                 }
                 return writeMethod != null;
             }
             return false;
         } catch (final IllegalAccessException | NoSuchMethodException | InvocationTargetException e) {
             return false;
         }
     }
 
     /**
      * Removes the specified {@code BeanIntrospector}.
      *
      * @param introspector the {@code BeanIntrospector} to be removed
      * @return <strong>true</strong> if the {@code BeanIntrospector} existed and could be removed, <strong>false</strong> otherwise
      * @since 1.9
      */
     public boolean removeBeanIntrospector(final BeanIntrospector introspector) {
         return introspectors.remove(introspector);
     }
 
     /**
      * Resets the {@link BeanIntrospector} objects registered at this instance. After this method was called, only the default {@code BeanIntrospector} is
      * registered.
      *
      * @since 1.9
      */
     public final void resetBeanIntrospectors() {
         introspectors.clear();
         introspectors.add(DefaultBeanIntrospector.INSTANCE);
         introspectors.add(SuppressPropertiesBeanIntrospector.SUPPRESS_CLASS);
     }
 
     /**
      * Sets the value of the specified indexed property of the specified bean, with no type conversions. In addition to supporting the JavaBeans specification,
      * this method has been extended to support {@code List} objects as well.
      *
      * @param bean  Bean whose property is to be set
      * @param name  Simple property name of the property value to be set
      * @param index Index of the property value to be set
      * @param value Value to which the indexed property element is to be set
      * @throws IndexOutOfBoundsException if the specified index is outside the valid range for the underlying property
      * @throws IllegalAccessException    if the caller does not have access to the property accessor method
      * @throws IllegalArgumentException  if {@code bean} or {@code name} is null
      * @throws InvocationTargetException if the property accessor method throws an exception
      * @throws NoSuchMethodException     if an accessor method for this property cannot be found
      */
     public void setIndexedProperty(final Object bean, final String name, final int index, final Object value)
             throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
         Objects.requireNonNull(bean, "bean");
         if (name == null || name.isEmpty()) {
             if (bean.getClass().isArray()) {
                 Array.set(bean, index, value);
                 return;
             }
             if (bean instanceof List) {
                 final List<Object> list = toObjectList(bean);
                 list.set(index, value);
                 return;
             }
         }
         Objects.requireNonNull(name, "name");
         // Handle DynaBean instances specially
         if (bean instanceof DynaBean) {
             final DynaProperty descriptor = ((DynaBean) bean).getDynaClass().getDynaProperty(name);
             if (descriptor == null) {
                 throw new NoSuchMethodException("Unknown property '" + name + "' on bean class '" + bean.getClass() + "'");
             }
             ((DynaBean) bean).set(name, index, value);
             return;
         }
 
         // Retrieve the property descriptor for the specified property
         final PropertyDescriptor descriptor = getPropertyDescriptor(bean, name);
         if (descriptor == null) {
             throw new NoSuchMethodException("Unknown property '" + name + "' on bean class '" + bean.getClass() + "'");
         }
 
         // Call the indexed setter method if there is one
         if (descriptor instanceof IndexedPropertyDescriptor) {
             Method writeMethod = ((IndexedPropertyDescriptor) descriptor).getIndexedWriteMethod();
             writeMethod = MethodUtils.getAccessibleMethod(bean.getClass(), writeMethod);
             if (writeMethod != null) {
                 try {
                     if (LOG.isTraceEnabled()) {
                         final String valueClassName = value == null ? "<null>" : value.getClass().getName();
                         LOG.trace("setSimpleProperty: Invoking method " + writeMethod + " with index=" + index + ", value=" + value + " (class "
                                 + valueClassName + ")");
                     }
                     invokeMethod(writeMethod, bean, Integer.valueOf(index), value);
                 } catch (final InvocationTargetException e) {
                     if (e.getTargetException() instanceof IndexOutOfBoundsException) {
                         throw (IndexOutOfBoundsException) e.getTargetException();
                     }
                     throw e;
                 }
                 return;
             }
         }
 
         // Otherwise, the underlying property must be an array or a list
         final Method readMethod = getReadMethod(bean.getClass(), descriptor);
         if (readMethod == null) {
             throw new NoSuchMethodException("Property '" + name + "' has no getter method on bean class '" + bean.getClass() + "'");
         }
 
         // Call the property getter to get the array or list
         final Object array = invokeMethod(readMethod, bean, BeanUtils.EMPTY_OBJECT_ARRAY);
         if (!array.getClass().isArray()) {
             if (!(array instanceof List)) {
                 throw new IllegalArgumentException("Property '" + name + "' is not indexed on bean class '" + bean.getClass() + "'");
             }
             // Modify the specified value in the List
             final List<Object> list = toObjectList(array);
             list.set(index, value);
         } else {
             // Modify the specified value in the array
             Array.set(array, index, value);
         }
     }
 
     /**
      * Sets the value of the specified indexed property of the specified bean, with no type conversions. The zero-relative index of the required value must be
      * included (in square brackets) as a suffix to the property name, or {@code IllegalArgumentException} will be thrown. In addition to supporting the
      * JavaBeans specification, this method has been extended to support {@code List} objects as well.
      *
      * @param bean  Bean whose property is to be modified
      * @param name  {@code propertyname[index]} of the property value to be modified
      * @param value Value to which the specified property element should be set
      * @throws IndexOutOfBoundsException if the specified index is outside the valid range for the underlying property
      * @throws IllegalAccessException    if the caller does not have access to the property accessor method
      * @throws IllegalArgumentException  if {@code bean} or {@code name} is null
      * @throws InvocationTargetException if the property accessor method throws an exception
      * @throws NoSuchMethodException     if an accessor method for this property cannot be found
      */
     public void setIndexedProperty(final Object bean, String name, final Object value)
             throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
         Objects.requireNonNull(bean, "bean");
         Objects.requireNonNull(name, "name");
         // Identify the index of the requested individual property
         int index = -1;
         try {
             index = resolver.getIndex(name);
         } catch (final IllegalArgumentException e) {
             throw new IllegalArgumentException("Invalid indexed property '" + name + "' on bean class '" + bean.getClass() + "'");
         }
         if (index < 0) {
             throw new IllegalArgumentException("Invalid indexed property '" + name + "' on bean class '" + bean.getClass() + "'");
         }
 
         // Isolate the name
         name = resolver.getProperty(name);
 
         // Set the specified indexed property value
         setIndexedProperty(bean, name, index, value);
     }
 
     /**
      * Sets the value of the specified mapped property of the specified bean, with no type conversions. The key of the value to set must be included (in
      * brackets) as a suffix to the property name, or {@code IllegalArgumentException} will be thrown.
      *
      * @param bean  Bean whose property is to be set
      * @param name  {@code propertyname(key)} of the property value to be set
      * @param value The property value to be set
      * @throws IllegalAccessException    if the caller does not have access to the property accessor method
      * @throws InvocationTargetException if the property accessor method throws an exception
      * @throws NoSuchMethodException     if an accessor method for this property cannot be found
      */
     public void setMappedProperty(final Object bean, String name, final Object value)
             throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
         Objects.requireNonNull(bean, "bean");
         Objects.requireNonNull(name, "name");
 
         // Identify the key of the requested individual property
         String key = null;
         try {
             key = resolver.getKey(name);
         } catch (final IllegalArgumentException e) {
             throw new IllegalArgumentException("Invalid mapped property '" + name + "' on bean class '" + bean.getClass() + "'");
         }
         if (key == null) {
             throw new IllegalArgumentException("Invalid mapped property '" + name + "' on bean class '" + bean.getClass() + "'");
         }
 
         // Isolate the name
         name = resolver.getProperty(name);
 
         // Request the specified indexed property value
         setMappedProperty(bean, name, key, value);
     }
 
     /**
      * Sets the value of the specified mapped property of the specified bean, with no type conversions.
      *
      * @param bean  Bean whose property is to be set
      * @param name  Mapped property name of the property value to be set
      * @param key   Key of the property value to be set
      * @param value The property value to be set
      * @throws IllegalAccessException    if the caller does not have access to the property accessor method
      * @throws InvocationTargetException if the property accessor method throws an exception
      * @throws NoSuchMethodException     if an accessor method for this property cannot be found
      */
     public void setMappedProperty(final Object bean, final String name, final String key, final Object value)
             throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
         Objects.requireNonNull(bean, "bean");
         Objects.requireNonNull(name, "name");
         Objects.requireNonNull(key, "key");
         // Handle DynaBean instances specially
         if (bean instanceof DynaBean) {
             final DynaProperty descriptor = ((DynaBean) bean).getDynaClass().getDynaProperty(name);
             if (descriptor == null) {
                 throw new NoSuchMethodException("Unknown property '" + name + "' on bean class '" + bean.getClass() + "'");
             }
             ((DynaBean) bean).set(name, key, value);
             return;
         }
 
         // Retrieve the property descriptor for the specified property
         final PropertyDescriptor descriptor = getPropertyDescriptor(bean, name);
         if (descriptor == null) {
             throw new NoSuchMethodException("Unknown property '" + name + "' on bean class '" + bean.getClass() + "'");
         }
 
         if (descriptor instanceof MappedPropertyDescriptor) {
             // Call the keyed setter method if there is one
             Method mappedWriteMethod = ((MappedPropertyDescriptor) descriptor).getMappedWriteMethod();
             mappedWriteMethod = MethodUtils.getAccessibleMethod(bean.getClass(), mappedWriteMethod);
             if (mappedWriteMethod == null) {
                 throw new NoSuchMethodException("Property '" + name + "' has no mapped setter method" + "on bean class '" + bean.getClass() + "'");
             }
             if (LOG.isTraceEnabled()) {
                 final String valueClassName = value == null ? "<null>" : value.getClass().getName();
                 LOG.trace("setSimpleProperty: Invoking method " + mappedWriteMethod + " with key=" + key + ", value=" + value + " (class " + valueClassName
                         + ")");
             }
             invokeMethod(mappedWriteMethod, bean, key, value);
         } else {
             /* means that the result has to be retrieved from a map */
             final Method readMethod = getReadMethod(bean.getClass(), descriptor);
             if (readMethod == null) {
                 throw new NoSuchMethodException("Property '" + name + "' has no mapped getter method on bean class '" + bean.getClass() + "'");
             }
             final Object invokeResult = invokeMethod(readMethod, bean, BeanUtils.EMPTY_OBJECT_ARRAY);
             /* test and fetch from the map */
             if (invokeResult instanceof Map) {
                 toPropertyMap(invokeResult).put(key, value);
             }
         }
     }
 
     /**
      * Sets the value of the (possibly nested) property of the specified name, for the specified bean, with no type conversions.
      * <p>
      * Example values for parameter "name" are:
      * <ul>
      * <li>"a" -- sets the value of property a of the specified bean</li>
      * <li>"a.b" -- gets the value of property a of the specified bean, then on that object sets the value of property b.</li>
      * <li>"a(key)" -- sets a value of mapped-property a on the specified bean. This effectively means bean.setA("key").</li>
      * <li>"a[3]" -- sets a value of indexed-property a on the specified bean. This effectively means bean.setA(3).</li>
      * </ul>
      *
      * @param bean  Bean whose property is to be modified
      * @param name  Possibly nested name of the property to be modified
      * @param value Value to which the property is to be set
      * @throws IllegalAccessException    if the caller does not have access to the property accessor method
      * @throws IllegalArgumentException  if {@code bean} or {@code name} is null
      * @throws IllegalArgumentException  if a nested reference to a property returns null
      * @throws InvocationTargetException if the property accessor method throws an exception
      * @throws NoSuchMethodException     if an accessor method for this property cannot be found
      */
     public void setNestedProperty(Object bean, String name, final Object value)
             throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
         Objects.requireNonNull(bean, "bean");
         Objects.requireNonNull(name, "name");
         // Resolve nested references
         while (resolver.hasNested(name)) {
             final String next = resolver.next(name);
             Object nestedBean = null;
             if (bean instanceof Map) {
                 nestedBean = getPropertyOfMapBean((Map<?, ?>) bean, next);
             } else if (resolver.isMapped(next)) {
                 nestedBean = getMappedProperty(bean, next);
             } else if (resolver.isIndexed(next)) {
                 nestedBean = getIndexedProperty(bean, next);
             } else {
                 nestedBean = getSimpleProperty(bean, next);
             }
             if (nestedBean == null) {
                 throw new NestedNullException("Null property value for '" + name + "' on bean class '" + bean.getClass() + "'");
             }
             bean = nestedBean;
             name = resolver.remove(name);
         }
 
         if (bean instanceof Map) {
             setPropertyOfMapBean(toPropertyMap(bean), name, value);
         } else if (resolver.isMapped(name)) {
             setMappedProperty(bean, name, value);
         } else if (resolver.isIndexed(name)) {
             setIndexedProperty(bean, name, value);
         } else {
             setSimpleProperty(bean, name, value);
         }
     }
 
     /**
      * Sets the value of the specified property of the specified bean, no matter which property reference format is used, with no type conversions.
      *
      * @param bean  Bean whose property is to be modified
      * @param name  Possibly indexed and/or nested name of the property to be modified
      * @param value Value to which this property is to be set
      * @throws IllegalAccessException    if the caller does not have access to the property accessor method
      * @throws IllegalArgumentException  if {@code bean} or {@code name} is null
      * @throws InvocationTargetException if the property accessor method throws an exception
      * @throws NoSuchMethodException     if an accessor method for this property cannot be found
      */
     public void setProperty(final Object bean, final String name, final Object value)
             throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
         setNestedProperty(bean, name, value);
     }
 
     /**
      * This method is called by method setNestedProperty when the current bean is found to be a Map object, and defines how to deal with setting a property on a
      * Map.
      * <p>
      * The standard implementation here is to:
      * <ul>
      * <li>call bean.set(propertyName) for all propertyName values.</li>
      * <li>throw an IllegalArgumentException if the property specifier contains MAPPED_DELIM or INDEXED_DELIM, as Map entries are essentially simple properties;
      * mapping and indexing operations do not make sense when accessing a map (even thought the returned object may be a Map or an Array).</li>
      * </ul>
      * <p>
      * The default behavior of BeanUtils 1.7.1 or later is for assigning to "a.b" to mean a.put(b, obj) always. However the behavior of BeanUtils version 1.6.0,
      * 1.6.1, 1.7.0 was for "a.b" to mean a.setB(obj) if such a method existed, and a.put(b, obj) otherwise. In version 1.5 it meant a.put(b, obj) always (ie
      * the same as the behavior in the current version). In versions prior to 1.5 it meant a.setB(obj) always. [yes, this is all <em>very</em> unfortunate]
      * <p>
      * Users who would like to customize the meaning of "a.b" in method setNestedProperty when a is a Map can create a custom subclass of this class and
      * override this method to implement the behavior of their choice, such as restoring the pre-1.4 behavior of this class if they wish. When overriding this
      * method, do not forget to deal with MAPPED_DELIM and INDEXED_DELIM characters in the propertyName.
      * <p>
      * Note, however, that the recommended solution for objects that implement Map but want their simple properties to come first is for <em>those</em> objects
      * to override their get/put methods to implement that behavior, and <em>not</em> to solve the problem by modifying the default behavior of the
      * PropertyUtilsBean class by overriding this method.
      *
      * @param bean         Map bean
      * @param propertyName The property name
      * @param value        the property value
      * @throws IllegalArgumentException  when the propertyName is regarded as being invalid.
      * @throws IllegalAccessException    just in case subclasses override this method to try to access real setter methods and find permission is denied.
      * @throws InvocationTargetException just in case subclasses override this method to try to access real setter methods, and find it throws an exception when
      *                                   invoked.
      *
      * @throws NoSuchMethodException     just in case subclasses override this method to try to access real setter methods, and want to fail if no simple method
      *                                   is available.
      * @since 1.8.0
      */
     protected void setPropertyOfMapBean(final Map<String, Object> bean, String propertyName, final Object value)
             throws IllegalArgumentException, IllegalAccessException, InvocationTargetException, NoSuchMethodException {
         if (resolver.isMapped(propertyName)) {
             final String name = resolver.getProperty(propertyName);
             if (name == null || name.isEmpty()) {
                 propertyName = resolver.getKey(propertyName);
             }
         }
 
         if (resolver.isIndexed(propertyName) || resolver.isMapped(propertyName)) {
             throw new IllegalArgumentException("Indexed or mapped properties are not supported on" + " objects of type Map: " + propertyName);
         }
 
         bean.put(propertyName, value);
     }
 
     /**
      * Configure the {@link Resolver} implementation used by BeanUtils.
      * <p>
      * The {@link Resolver} handles the <em>property name</em> expressions and the implementation in use effectively controls the dialect of the <em>expression
      * language</em> that BeanUtils recognizes.
      * <p>
      * {@link DefaultResolver} is the default implementation used.
      *
      * @param resolver The property expression resolver.
      * @since 1.8.0
      */
     public void setResolver(final Resolver resolver) {
         if (resolver == null) {
             this.resolver = new DefaultResolver();
         } else {
             this.resolver = resolver;
         }
     }
 
     /**
      * Sets the value of the specified simple property of the specified bean, with no type conversions.
      *
      * @param bean  Bean whose property is to be modified
      * @param name  Name of the property to be modified
      * @param value Value to which the property should be set
      * @throws IllegalAccessException    if the caller does not have access to the property accessor method
      * @throws IllegalArgumentException  if {@code bean} or {@code name} is null
      * @throws IllegalArgumentException  if the property name is nested or indexed
      * @throws InvocationTargetException if the property accessor method throws an exception
      * @throws NoSuchMethodException     if an accessor method for this property cannot be found
      */
     public void setSimpleProperty(final Object bean, final String name, final Object value)
             throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
         Objects.requireNonNull(bean, "bean");
         Objects.requireNonNull(name, "name");
         final Class<?> beanClass = bean.getClass();
         // Validate the syntax of the property name
         if (resolver.hasNested(name)) {
             throw new IllegalArgumentException("Nested property names are not allowed: Property '" + name + "' on bean class '" + beanClass + "'");
         }
         if (resolver.isIndexed(name)) {
             throw new IllegalArgumentException("Indexed property names are not allowed: Property '" + name + "' on bean class '" + beanClass + "'");
         }
         if (resolver.isMapped(name)) {
             throw new IllegalArgumentException("Mapped property names are not allowed: Property '" + name + "' on bean class '" + beanClass + "'");
         }
 
         // Handle DynaBean instances specially
         if (bean instanceof DynaBean) {
             final DynaProperty descriptor = ((DynaBean) bean).getDynaClass().getDynaProperty(name);
             if (descriptor == null) {
                 throw new NoSuchMethodException("Unknown property '" + name + "' on dynaclass '" + ((DynaBean) bean).getDynaClass() + "'");
             }
             ((DynaBean) bean).set(name, value);
             return;
         }
 
         // Retrieve the property setter method for the specified property
         final PropertyDescriptor descriptor = getPropertyDescriptor(bean, name);
         if (descriptor == null) {
             throw new NoSuchMethodException("Unknown property '" + name + "' on class '" + beanClass + "'");
         }
         final Method writeMethod = getWriteMethod(beanClass, descriptor);
         if (writeMethod == null) {
             throw new NoSuchMethodException("Property '" + name + "' has no setter method in class '" + beanClass + "'");
         }
 
         // Call the property setter method
         if (LOG.isTraceEnabled()) {
             final String valueClassName = value == null ? "<null>" : value.getClass().getName();
             LOG.trace("setSimpleProperty: Invoking method " + writeMethod + " with value " + value + " (class " + valueClassName + ")");
         }
         invokeMethod(writeMethod, bean, value);
     }
 }