1 files changed, 359 insertions, 0 deletions

diff --git a/OpenSim/Data/MSSQL/MSSQLGenericTableHandler.cs b/OpenSim/Data/MSSQL/MSSQLGenericTableHandler.cs
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+++ b/OpenSim/Data/MSSQL/MSSQLGenericTableHandler.cs
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+/*
+ * 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.Data;
+using System.Reflection;
+using log4net;
+using System.Data.SqlClient;
+using OpenMetaverse;
+using OpenSim.Framework;
+using OpenSim.Region.Framework.Interfaces;
+using System.Text;
+
+namespace OpenSim.Data.MSSQL
+{
+    public class MSSQLGenericTableHandler<T> where T : class, new()
+    {
+        private static readonly ILog m_log =
+            LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+
+        protected string m_ConnectionString;
+        protected MSSQLManager m_database; //used for parameter type translation
+        protected Dictionary<string, FieldInfo> m_Fields =
+                new Dictionary<string, FieldInfo>();
+
+        protected List<string> m_ColumnNames = null;
+        protected string m_Realm;
+        protected FieldInfo m_DataField = null;
+
+        public MSSQLGenericTableHandler(string connectionString,
+                string realm, string storeName)
+        {
+            m_Realm = realm;
+
+            if (storeName != String.Empty)
+            {
+                Assembly assem = GetType().Assembly;
+                m_ConnectionString = connectionString;
+                using (SqlConnection conn = new SqlConnection(m_ConnectionString))
+                {
+                    conn.Open();
+                    Migration m = new Migration(conn, assem, storeName);
+                    m.Update();
+                }
+
+            }
+            m_database = new MSSQLManager(m_ConnectionString);
+
+            Type t = typeof(T);
+            FieldInfo[] fields = t.GetFields(BindingFlags.Public |
+                                             BindingFlags.Instance |
+                                             BindingFlags.DeclaredOnly);
+
+            if (fields.Length == 0)
+                return;
+
+            foreach (FieldInfo f in fields)
+            {
+                if (f.Name != "Data")
+                    m_Fields[f.Name] = f;
+                else
+                    m_DataField = f;
+            }
+
+        }
+
+        private void CheckColumnNames(SqlDataReader reader)
+        {
+            if (m_ColumnNames != null)
+                return;
+
+            m_ColumnNames = new List<string>();
+
+            DataTable schemaTable = reader.GetSchemaTable();
+            foreach (DataRow row in schemaTable.Rows)
+            {
+                if (row["ColumnName"] != null &&
+                        (!m_Fields.ContainsKey(row["ColumnName"].ToString())))
+                    m_ColumnNames.Add(row["ColumnName"].ToString());
+
+            }
+        }
+
+        private List<string> GetConstraints()
+        {
+            List<string> constraints = new List<string>();
+            string query = string.Format(@"SELECT 
+                            COL_NAME(ic.object_id,ic.column_id) AS column_name
+                            FROM sys.indexes AS i
+                            INNER JOIN sys.index_columns AS ic 
+                              ON i.object_id = ic.object_id AND i.index_id = ic.index_id
+                            WHERE i.is_primary_key = 1 
+                            AND i.object_id = OBJECT_ID('{0}');", m_Realm);
+            using (SqlConnection conn = new SqlConnection(m_ConnectionString))
+            using (SqlCommand cmd = new SqlCommand(query, conn))
+            {
+                conn.Open();
+                using (SqlDataReader rdr = cmd.ExecuteReader())
+                {
+                    while (rdr.Read())
+                    {
+                        // query produces 0 to many rows of single column, so always add the first item in each row
+                        constraints.Add((string)rdr[0]);
+                    }
+                }
+                return constraints;
+            }
+        }
+
+        public virtual T[] Get(string field, string key)
+        {
+            return Get(new string[] { field }, new string[] { key });
+        }
+
+        public virtual T[] Get(string[] fields, string[] keys)
+        {
+            if (fields.Length != keys.Length)
+                return new T[0];
+
+            List<string> terms = new List<string>();
+
+            using (SqlConnection conn = new SqlConnection(m_ConnectionString))
+            using (SqlCommand cmd = new SqlCommand())
+            {
+
+                for (int i = 0; i < fields.Length; i++)
+                {
+                    cmd.Parameters.Add(m_database.CreateParameter(fields[i], keys[i]));
+                    terms.Add("[" + fields[i] + "] = @" + fields[i]);
+                }
+
+                string where = String.Join(" AND ", terms.ToArray());
+
+                string query = String.Format("SELECT * FROM {0} WHERE {1}",
+                        m_Realm, where);
+
+                cmd.Connection = conn;
+                cmd.CommandText = query;
+                conn.Open();
+                return DoQuery(cmd);
+            }
+        }
+
+        protected T[] DoQuery(SqlCommand cmd)
+        {
+            using (SqlDataReader reader = cmd.ExecuteReader())
+            {
+                if (reader == null)
+                    return new T[0];
+
+                CheckColumnNames(reader);
+
+                List<T> result = new List<T>();
+
+                while (reader.Read())
+                {
+                    T row = new T();
+
+                    foreach (string name in m_Fields.Keys)
+                    {
+                        if (m_Fields[name].GetValue(row) is bool)
+                        {
+                            int v = Convert.ToInt32(reader[name]);
+                            m_Fields[name].SetValue(row, v != 0 ? true : false);
+                        }
+                        else if (m_Fields[name].GetValue(row) is UUID)
+                        {
+                            UUID uuid = UUID.Zero;
+
+                            UUID.TryParse(reader[name].ToString(), out uuid);
+                            m_Fields[name].SetValue(row, uuid);
+                        }
+                        else if (m_Fields[name].GetValue(row) is int)
+                        {
+                            int v = Convert.ToInt32(reader[name]);
+                            m_Fields[name].SetValue(row, v);
+                        }
+                        else
+                        {
+                            m_Fields[name].SetValue(row, reader[name]);
+                        }
+                    }
+
+                    if (m_DataField != null)
+                    {
+                        Dictionary<string, string> data =
+                                new Dictionary<string, string>();
+
+                        foreach (string col in m_ColumnNames)
+                        {
+                            data[col] = reader[col].ToString();
+                            if (data[col] == null)
+                                data[col] = String.Empty;
+                        }
+
+                        m_DataField.SetValue(row, data);
+                    }
+
+                    result.Add(row);
+                }
+                return result.ToArray();
+            }
+        }
+
+        public virtual T[] Get(string where)
+        {
+            using (SqlConnection conn = new SqlConnection(m_ConnectionString))
+            using (SqlCommand cmd = new SqlCommand())
+            {
+
+                string query = String.Format("SELECT * FROM {0} WHERE {1}",
+                        m_Realm, where);
+                cmd.Connection = conn;
+                cmd.CommandText = query;
+
+                //m_log.WarnFormat("[MSSQLGenericTable]: SELECT {0} WHERE {1}", m_Realm, where);
+
+                conn.Open();
+                return DoQuery(cmd);
+            }
+        }
+
+        public virtual bool Store(T row)
+        {
+            List<string> constraintFields = GetConstraints();
+            List<KeyValuePair<string, string>> constraints = new List<KeyValuePair<string, string>>();
+
+            using (SqlConnection conn = new SqlConnection(m_ConnectionString))
+            using (SqlCommand cmd = new SqlCommand())
+            {
+
+                StringBuilder query = new StringBuilder();
+                List<String> names = new List<String>();
+                List<String> values = new List<String>();
+
+                foreach (FieldInfo fi in m_Fields.Values)
+                {
+                    names.Add(fi.Name);
+                    values.Add("@" + fi.Name);
+                    if (constraintFields.Count > 0 && constraintFields.Contains(fi.Name))
+                    {
+                        constraints.Add(new KeyValuePair<string, string>(fi.Name, fi.GetValue(row).ToString()));
+                    }
+                    cmd.Parameters.Add(m_database.CreateParameter(fi.Name, fi.GetValue(row).ToString()));
+                }
+
+                if (m_DataField != null)
+                {
+                    Dictionary<string, string> data =
+                            (Dictionary<string, string>)m_DataField.GetValue(row);
+
+                    foreach (KeyValuePair<string, string> kvp in data)
+                    {
+                        if (constraintFields.Count > 0 && constraintFields.Contains(kvp.Key))
+                        {
+                            constraints.Add(new KeyValuePair<string, string>(kvp.Key, kvp.Key));
+                        }
+                        names.Add(kvp.Key);
+                        values.Add("@" + kvp.Key);
+                        cmd.Parameters.Add(m_database.CreateParameter("@" + kvp.Key, kvp.Value));
+                    }
+
+                }
+
+                query.AppendFormat("UPDATE {0} SET ", m_Realm);
+                int i = 0;
+                for (i = 0; i < names.Count - 1; i++)
+                {
+                    query.AppendFormat("[{0}] = {1}, ", names[i], values[i]);
+                }
+                query.AppendFormat("[{0}] = {1} ", names[i], values[i]);
+                if (constraints.Count > 0)
+                {
+                    List<string> terms = new List<string>();
+                    for (int j = 0; j < constraints.Count; j++)
+                    {
+                        terms.Add(" [" + constraints[j].Key + "] = @" + constraints[j].Key);
+                    }
+                    string where = String.Join(" AND ", terms.ToArray());
+                    query.AppendFormat(" WHERE {0} ", where);
+                    
+                }
+                cmd.Connection = conn;
+                cmd.CommandText = query.ToString();
+                
+                conn.Open();
+                if (cmd.ExecuteNonQuery() > 0)
+                {
+                    //m_log.WarnFormat("[MSSQLGenericTable]: Updating {0}", m_Realm);
+                    return true;
+                }
+                else
+                {
+                    // assume record has not yet been inserted
+
+                    query = new StringBuilder();
+                    query.AppendFormat("INSERT INTO {0} ([", m_Realm);
+                    query.Append(String.Join("],[", names.ToArray()));
+                    query.Append("]) values (" + String.Join(",", values.ToArray()) + ")");
+                    cmd.Connection = conn;
+                    cmd.CommandText = query.ToString();
+                    //m_log.WarnFormat("[MSSQLGenericTable]: Inserting into {0}", m_Realm);
+                    if (conn.State != ConnectionState.Open)
+                        conn.Open();
+                    if (cmd.ExecuteNonQuery() > 0)
+                        return true;
+                }
+
+                return false;
+            }
+        }
+
+        public virtual bool Delete(string field, string val)
+        {
+            using (SqlConnection conn = new SqlConnection(m_ConnectionString))
+            using (SqlCommand cmd = new SqlCommand())
+            {
+                string deleteCommand = String.Format("DELETE FROM {0} WHERE [{1}] = @{1}", m_Realm, field);
+                cmd.CommandText = deleteCommand;
+                
+                cmd.Parameters.Add(m_database.CreateParameter(field, val));
+                cmd.Connection = conn;
+                conn.Open();
+
+                if (cmd.ExecuteNonQuery() > 0)
+                {
+                    //m_log.Warn("[MSSQLGenericTable]: " + deleteCommand);
+                    return true;
+                }
+                return false;
+            }
+        }
+    }
+}