Integrating WCF Services into UDDI based enterprise SOA

using System;
using System.Collections.Generic;
using System.Configuration;
using System.Linq;
using System.Text;

namespace UDDIServiceFactory.Configuration
{
    /// <summary>
    /// Provide the functionalities to read and write the configuration of a service to discover through UDDI.
    /// </summary>
    public class ServiceDiscoveryConfigurationSection : ConfigurationSection
    {
        #region Fields

        /// <summary>
        /// Internal flag to disable property setting.
        /// </summary>
        private static bool _isReadOnlySection = false;

        /// <summary>
        /// The collection (property bag) that contains the section properties.
        /// </summary>
        private static ConfigurationPropertyCollection _propertyBag;

        /// <summary>
        /// The URL of the directory services property.
        /// </summary>
        private static readonly ConfigurationProperty _directoryURL = new ConfigurationProperty("DirectoryURL",
            typeof(string), null,
            ConfigurationPropertyOptions.None);

        /// <summary>
        /// The Service Key property.
        /// </summary>
        private static readonly ConfigurationProperty _name = new ConfigurationProperty("Name",
            typeof(string), null,
            ConfigurationPropertyOptions.None);

        /// <summary>
        /// The Service Key property.
        /// </summary>
        private static readonly ConfigurationProperty _serviceKey = new ConfigurationProperty("ServiceKey",
            typeof(string), null,
            ConfigurationPropertyOptions.None);

        /// <summary>
        /// The TModel Key property.
        /// </summary>
        private static readonly ConfigurationProperty _tModelKey = new ConfigurationProperty("TModelKey",
            typeof(string), null,
            ConfigurationPropertyOptions.IsRequired);

        #endregion

        #region Private methods

        /// <summary>
        /// Throws an exception if the configuration is read-only.
        /// </summary>
        /// <param name="propertyName"></param>
        private void ThrowExceptionIfReadOnly(string propertyName)
        {
            if (_isReadOnlySection)
                throw new ConfigurationErrorsException("The property " + propertyName + " is read only.");
        }

        #endregion

        #region Public properties

        /// <summary>
        /// Gets or sets the URL of the UDDI directory service.
        /// </summary>
        [StringValidator(InvalidCharacters = " ~!@#$%^&*()[]{};'\"|\\", MinLength = 1, MaxLength = 128)]
        public string DirectoryURL
        {
            get { return (string)this[_directoryURL]; }
            set
            {
                ThrowExceptionIfReadOnly("DirectoryURL");
                this[_directoryURL] = value;
            }
        }

        /// <summary>
        /// Gets or sets the name of the configuration section.
        /// </summary>
        [StringValidator(InvalidCharacters = " ~!@#$%^&*()[]{}/;'\"|\\", MinLength = 1, MaxLength = 128)]
        public string Name
        {
            get { return (string)this[_name]; }
            set
            {
                ThrowExceptionIfReadOnly("Name");
                this[_name] = value;
            }
        }

        /// <summary>
        /// Gets or sets the Service Key.
        /// </summary>
        [StringValidator(InvalidCharacters = " ~!@#$%^&*()[]{}/;'\"|\\", MinLength = 1, MaxLength = 128)]
        [RegexStringValidator(@"^(\{){0,1}[0-9a-fA-F]{8}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{12}(\}){0,1}$")]
        public string ServiceKey
        {
            get { return (string)this[_serviceKey]; }
            set
            {
                ThrowExceptionIfReadOnly("ServiceKey");
                this[_serviceKey] = value;
            }
        }

        /// <summary>
        /// Gets or sets the TModel Key of the service.
        /// </summary>
        [StringValidator(InvalidCharacters = " ~!@#$%^&*()[]{}/;'\"|\\", MinLength = 1, MaxLength = 128)]
        [RegexStringValidator(@"^uuid:(\{){0,1}[0-9a-fA-F]{8}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{12}(\}){0,1}$")]
        public string TModelKey
        {
            get { return (string)this[_tModelKey]; }
            set
            {
                ThrowExceptionIfReadOnly("TModelKey");
                this[_tModelKey] = value;
            }
        }

        /// <summary>
        /// This is a key customization. 
        /// <remarks>Gets the initialized property bag.</remarks>
        /// </summary>
        protected override ConfigurationPropertyCollection Properties
        {
            get { return _propertyBag; }
        }

        #endregion

        #region Ctor

        /// <summary>
        /// Initializes a new instance of the ServiceDiscoveryConfigurationSection class.
        /// </summary>
        public ServiceDiscoveryConfigurationSection()
        {
            // Create a new instance of the ConfigurationPropertyCollection class.
            _propertyBag = new ConfigurationPropertyCollection();

            // Adds the properties to the property bag.
            _propertyBag.Add(_directoryURL);
            _propertyBag.Add(_name);
            _propertyBag.Add(_serviceKey);
            _propertyBag.Add(_tModelKey);
        }

        /// <summary>
        /// 
        /// </summary>
        ~ServiceDiscoveryConfigurationSection()
        {
            Dispose();
        }

        #endregion

        #region IDisposable implementation

        /// <summary>
        /// 
        /// </summary>
        public virtual void Dispose()
        {
            _propertyBag = null;
        }

        #endregion

    }
}