Integrating WCF Services into UDDI based enterprise SOA

using System.Configuration;

namespace UDDIServiceFactory.Configuration
{
    /// <summary>
    /// Provides access to configuration files for client applications. 
    /// This class cannot be inherited.
    /// </summary>
    public static class ConfigurationAgent
    {
        #region Fields

        /// <summary>
        /// Represents a particular configuration applicable to an application.
        /// </summary>
        private static System.Configuration.Configuration _appConfig = null;

        /// <summary>
        /// Used to synclock access to critical sections.
        /// </summary>
        private static object _syncLock = new object();

        #endregion

        #region Accessors

        /// <summary>
        /// Gets the <see cref="System.Configuration.Configuration"/> object.
        /// </summary>
        public static System.Configuration.Configuration Configuration
        {
            get
            {
                if (null == _appConfig)
                {
                    lock (_syncLock)
                    {
                        _appConfig = ConfigurationAgent.OpenExeConfiguration(ConfigurationUserLevel.None);
                    }
                }
                return _appConfig;
            }
        }

        #endregion

        #region Public methods

        /// <summary>
        /// Retrieves a specified configuration section for the current
        /// application's default configuration.
        /// </summary>
        /// <param name="sectionName">The configuration section path and name.</param>
        /// <returns>A <see cref="System.Configuration.ConfigurationSection"/> object.</returns>
        /// <exception cref="System.Configuration.ConfigurationErrorsException">
        /// A configuration file could not be loaded.</exception>
        public static System.Configuration.ConfigurationSection GetSection(string sectionName)
        {
            // Returns the specified ConfigurationSection object.
            return _appConfig.GetSection(sectionName);
        }

        /// <summary>
        /// Opens the configuration file for the current application
        /// as a <see cref="System.Configuration.Configuration"/> object.
        /// </summary>
        /// <param name="level">The <see cref="ConfigurationUserLevel"/> object for which you are opening the configuration.</param>
        /// <returns>A <see cref="System.Configuration.Configuration"/> object.</returns>
        /// <exception cref="System.Configuration.ConfigurationErrorsException">
        /// A configuration file could not be loaded.</exception>
        public static System.Configuration.Configuration OpenExeConfiguration(ConfigurationUserLevel level)
        {
            // Get the application configuration file.
            lock (_syncLock)
            {
                _appConfig = ConfigurationManager.OpenExeConfiguration(level);
            }
            return _appConfig;
        }

        /// <summary>
        /// Opens the specified client configuration file as a <see cref="System.Configuration.Configuration"/>
        /// object that uses the specified file mapping and user level.
        /// </summary>
        /// <param name="fileMap">An <see cref="ExeConfigurationFileMap"/> object that references configuration
        /// file to use instead of the application default configuration file.</param>
        /// <param name="level">The <see cref="ConfigurationUserLevel"/> object for which you are opening the configuration.</param>
        /// <returns>A System.Configuration.Configuration object.</returns>
        /// <exception cref="System.Configuration.ConfigurationErrorsException">
        /// A configuration file could not be loaded.</exception>
        public static System.Configuration.Configuration OpenMappedExeConfiguration(ExeConfigurationFileMap fileMap, ConfigurationUserLevel level)
        {
            // Get the application configuration file.
            lock (_syncLock)
            {
                _appConfig = ConfigurationManager.OpenMappedExeConfiguration(fileMap, level);
            }
            return _appConfig;
        }

        #endregion
    }
}