src/main/java/ognl/OgnlRuntime.java
public static Map getPropertyDescriptors(Class targetClass)
            throws IntrospectionException, OgnlException
    {
        Map result;

        if ((result = (Map) _propertyDescriptorCache.get(targetClass)) == null)
        {
            synchronized (_propertyDescriptorCache) {
                if ((result = (Map) _propertyDescriptorCache.get(targetClass)) == null)
                {
                    PropertyDescriptor[] pda = Introspector.getBeanInfo(targetClass).getPropertyDescriptors();

                    result = new HashMap(101);
                    for (int i = 0, icount = pda.length; i < icount; i++)
                    {
                        // workaround for Introspector bug 6528714 (bugs.sun.com)
                        if (pda[i].getReadMethod() != null && !isMethodCallable(pda[i].getReadMethod()))
                        {
                            pda[i].setReadMethod(findClosestMatchingMethod(targetClass, pda[i].getReadMethod(), pda[i].getName(),
                                                                           pda[i].getPropertyType(), true));
                        }
                        if (pda[i].getWriteMethod() != null && !isMethodCallable(pda[i].getWriteMethod()))
                        {
                            pda[i].setWriteMethod(findClosestMatchingMethod(targetClass, pda[i].getWriteMethod(), pda[i].getName(),
                                                                            pda[i].getPropertyType(), false));
                        }

                        result.put(pda[i].getName(), pda[i]);
                    }

                    findObjectIndexedPropertyDescriptors(targetClass, result);
                    _propertyDescriptorCache.put(targetClass, result);
                }
            }
        }
        return result;
    }
public static Map getPropertyDescriptors(Class targetClass)
            throws IntrospectionException, OgnlException
    {
        Map result;

        if ((result = (Map) _propertyDescriptorCache.get(targetClass)) == null)
        {
            synchronized (_propertyDescriptorCache) {
                if ((result = (Map) _propertyDescriptorCache.get(targetClass)) == null)
                {
                    PropertyDescriptor[] pda = Introspector.getBeanInfo(targetClass).getPropertyDescriptors();

                    result = new HashMap(101);
                    for (int i = 0, icount = pda.length; i < icount; i++)
                    {
                        // workaround for Introspector bug 6528714 (bugs.sun.com)
                        if (pda[i].getReadMethod() != null && !isMethodCallable(pda[i].getReadMethod()))
                        {
                            pda[i].setReadMethod(findClosestMatchingMethod(targetClass, pda[i].getReadMethod(), pda[i].getName(),
                                                                           pda[i].getPropertyType(), true));
                        }
                        if (pda[i].getWriteMethod() != null && !isMethodCallable(pda[i].getWriteMethod()))
                        {
                            pda[i].setWriteMethod(findClosestMatchingMethod(targetClass, pda[i].getWriteMethod(), pda[i].getName(),
                                                                            pda[i].getPropertyType(), false));
                        }

                        result.put(pda[i].getName(), pda[i]);
                    }

                    findObjectIndexedPropertyDescriptors(targetClass, result);
                    _propertyDescriptorCache.put(targetClass, result);
                }
            }
        }
        return result;
    }
This method returns the property descriptors for the given class as a Map.

@param targetClass The class to get the descriptors for.
@return Map map of property descriptors for class.

@throws IntrospectionException on errors using {@link Introspector}.
@throws OgnlException On general errors.