playing with multicolumn mapping of vectors using a custom type

1 files changed, 107 insertions, 0 deletions

diff --git a/OpenSim/Data/NHibernate/LLVector3UserType.cs b/OpenSim/Data/NHibernate/LLVector3UserType.cs
new file mode 100644
index 0000000..b040ca7d
--- /dev/null
+++ b/OpenSim/Data/NHibernate/LLVector3UserType.cs
@@ -0,0 +1,107 @@
+/*
+ * 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 OpenSim 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.Data;
+using libsecondlife;
+using NHibernate;
+using NHibernate.SqlTypes;
+using NHibernate.UserTypes;
+
+namespace OpenSim.Data.NHibernate
+{
+    [Serializable]
+    public class LLVector3UserType: IUserType
+    {
+        public object Assemble(object cached, object owner)
+        {
+            return cached;
+        }
+
+        bool IUserType.Equals(object vector1, object vector2)
+        {
+            return vector1.Equals(vector2);
+        }
+
+        public object DeepCopy(object vector)
+        {
+            return new LLVector3((LLVector3) vector);
+        }
+
+        public object Disassemble(object vector)
+        {
+            return vector;
+        }
+
+        public int GetHashCode(object vector)
+        {
+            return (vector == null) ? 0 : vector.GetHashCode();
+        }
+
+        public bool IsMutable
+        {
+            get { return false; }
+        }
+
+        public object NullSafeGet(IDataReader rs, string[] names, object owner)
+        {
+            object vector = null;
+                        
+            int x = rs.GetOrdinal(names[0]);
+            int y = rs.GetOrdinal(names[1]);
+            int z = rs.GetOrdinal(names[2]);
+            if (!rs.IsDBNull(x))
+            {
+                vector = new LLVector3((Single)rs[x], (Single)rs[y], (Single)rs[z]);
+            }
+            return vector;
+        }
+
+        public void NullSafeSet(IDbCommand cmd, object obj, int index)
+        {
+            LLVector3 vector = (LLVector3)obj;
+            ((IDataParameter)cmd.Parameters[index]).Value = vector.X;
+            ((IDataParameter)cmd.Parameters[index + 1]).Value = vector.Y;
+            ((IDataParameter)cmd.Parameters[index + 2]).Value = vector.Z;
+        }
+
+        public object Replace(object original, object target, object owner)
+        {
+            return original;
+        }
+
+        public Type ReturnedType
+        {
+            get { return typeof(LLVector3); }
+        }
+
+        public SqlType[] SqlTypes
+        {
+            get { return new SqlType [] { NHibernateUtil.Single.SqlType, NHibernateUtil.Single.SqlType, NHibernateUtil.Single.SqlType }; }
+        }
+    }
+}