1 files changed, 71 insertions, 0 deletions

diff --git a/OpenSim/Data/DBGuids.cs b/OpenSim/Data/DBGuids.cs
new file mode 100644
index 0000000..ad1c19c
--- /dev/null
+++ b/OpenSim/Data/DBGuids.cs
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSimulator Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+using OpenMetaverse;
+
+namespace OpenSim.Data
+{
+
+    public static class DBGuid
+    {
+        /// <summary>This function converts a value returned from the database in one of the
+        /// supported formats into a UUID.  This function is not actually DBMS-specific right
+        /// now
+        /// 
+        /// </summary>
+        /// <param name="id"></param>
+        /// <returns></returns>
+        public static UUID FromDB(object id)
+        {
+            if ((id == null) || (id == DBNull.Value))
+                return UUID.Zero;
+
+            if (id.GetType() == typeof(Guid))
+                return new UUID((Guid)id);
+
+            if (id.GetType() == typeof(byte[]))
+            {
+                if (((byte[])id).Length == 0)
+                    return UUID.Zero;
+                else if (((byte[])id).Length == 16)
+                    return new UUID((byte[])id, 0);
+            }
+            else if (id.GetType() == typeof(string))
+            {
+                if (((string)id).Length == 0)
+                    return UUID.Zero;
+                else if (((string)id).Length == 36)
+                    return new UUID((string)id);
+            }
+
+            throw new Exception("Failed to convert db value to UUID: " + id.ToString());
+        }
+    }
+}