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DataPRO/Modules/DatabaseImporter/DatabaseImport/SettingsDB/SettingsDB.cs

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+using System.Collections.Generic;
+
+namespace DatabaseImport
+{
+    /// <summary>
+    /// handles storing/retrieving settings from a db
+    /// assumes DB connection is already established or connection information has already been set for db
+    /// </summary>
+    public class SettingsDB
+    {
+        private static SettingsDB _instance;
+        private static readonly object LOCK_OBJECT = new object();
+
+        private static SettingsDB Instance
+        {
+            get
+            {
+                lock (LOCK_OBJECT)
+                {
+                    return _instance ?? (_instance = new SettingsDB());
+                }
+            }
+        }
+
+        private readonly Dictionary<string, Setting> _settingsLookup = new Dictionary<string, Setting>();
+        /// <summary>
+        /// retrieves a global value, creates using default value if property doesn't exist yet
+        /// </summary>
+        /// <param name="id"></param>
+        /// <param name="defaultValue"></param>
+        /// <returns></returns>
+        public static string GetGlobalValue(string id, string defaultValue)
+        {
+            lock (LOCK_OBJECT)
+            {
+                if (!Instance._settingsLookup.ContainsKey(id))
+                {
+                    Instance._settingsLookup[id] = new GlobalSetting(id, defaultValue);
+                }
+                return Instance._settingsLookup[id].PropertyValue;
+            }
+        }
+        /// <summary>
+        /// returns the global value for given property, or the default value if no value currently exists
+        /// </summary>
+        /// <param name="id"></param>
+        /// <param name="defaultValue"></param>
+        /// <returns></returns>
+        public static bool GetGlobalValueBool(string id, bool defaultValue)
+        {
+            var sValue = GetGlobalValue(id, defaultValue.ToString(System.Globalization.CultureInfo.InvariantCulture));
+            var b = defaultValue;
+            return !bool.TryParse(sValue, out b) ? b : b;
+        }
+        /// <summary>
+        /// stores an application global property in the database
+        /// </summary>
+        /// <param name="id"></param>
+        /// <param name="value"></param>
+        public static void SetGlobalValue(string id, string value)
+        {
+            lock (LOCK_OBJECT)
+            {
+                if (!Instance._settingsLookup.ContainsKey(id))
+                {
+                    Instance._settingsLookup[id] = new GlobalSetting(id, value);
+                }
+                else
+                {
+                    Instance._settingsLookup[id].SetValue(value);
+                }
+            }
+        }
+        /// <summary>
+        /// stores an application global property value in the database
+        /// </summary>
+        /// <param name="id"></param>
+        /// <param name="value"></param>
+        public static void SetGlobalValueBoolean(string id, bool value)
+        {
+            lock (LOCK_OBJECT)
+            {
+                if (!Instance._settingsLookup.ContainsKey(id))
+                {
+                    Instance._settingsLookup[id] = new GlobalSetting(id, value.ToString(System.Globalization.CultureInfo.InvariantCulture));
+                }
+                else
+                {
+                    Instance._settingsLookup[id].SetValue(value.ToString(System.Globalization.CultureInfo.InvariantCulture));
+                }
+            }
+        }
+    }
+}