From 033a3da254d5acba8fff002bec921dc39752bff8 Mon Sep 17 00:00:00 2001 From: Melanie Date: Mon, 4 Jan 2010 23:30:38 +0000 Subject: Sqlite framework and generic handler. They compile. More I cannot say. --- OpenSim/Data/SQLite/SQLiteGenericTableHandler.cs | 253 +++++++++++++++++++++++ 1 file changed, 253 insertions(+) create mode 100644 OpenSim/Data/SQLite/SQLiteGenericTableHandler.cs (limited to 'OpenSim/Data/SQLite/SQLiteGenericTableHandler.cs') diff --git a/OpenSim/Data/SQLite/SQLiteGenericTableHandler.cs b/OpenSim/Data/SQLite/SQLiteGenericTableHandler.cs new file mode 100644 index 0000000..6b67ec6 --- /dev/null +++ b/OpenSim/Data/SQLite/SQLiteGenericTableHandler.cs @@ -0,0 +1,253 @@ +/* + * 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 Mono.Data.SqliteClient; +using OpenMetaverse; +using OpenSim.Framework; +using OpenSim.Region.Framework.Interfaces; + +namespace OpenSim.Data.SQLite +{ + public class SQLiteGenericTableHandler : SQLiteFramework where T: class, new() + { + private static readonly ILog m_log = + LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType); + + + protected Dictionary m_Fields = + new Dictionary(); + + protected List m_ColumnNames = null; + protected string m_Realm; + protected FieldInfo m_DataField = null; + + public SQLiteGenericTableHandler(string connectionString, + string realm, string storeName) : base(connectionString) + { + m_Realm = realm; + if (storeName != String.Empty) + { + Assembly assem = GetType().Assembly; + + Migration m = new Migration(m_Connection, assem, storeName); + m.Update(); + } + + 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(IDataReader reader) + { + if (m_ColumnNames != null) + return; + + m_ColumnNames = new List(); + + 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()); + } + } + + public T[] Get(string field, string key) + { + return Get(new string[] { field }, new string[] { key }); + } + + public T[] Get(string[] fields, string[] keys) + { + if (fields.Length != keys.Length) + return new T[0]; + + List terms = new List(); + + SqliteCommand cmd = new SqliteCommand(); + + for (int i = 0 ; i < fields.Length ; i++) + { + cmd.Parameters.Add(new SqliteParameter(":" + 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.CommandText = query; + + return DoQuery(cmd); + } + + protected T[] DoQuery(SqliteCommand cmd) + { + IDataReader reader = ExecuteReader(cmd); + if (reader == null) + return new T[0]; + + CheckColumnNames(reader); + + List result = new List(); + + 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 data = + new Dictionary(); + + 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); + } + + CloseReaderCommand(cmd); + + return result.ToArray(); + } + + public T[] Get(string where) + { + SqliteCommand cmd = new SqliteCommand(); + + string query = String.Format("select * from {0} where {1}", + m_Realm, where); + + cmd.CommandText = query; + + return DoQuery(cmd); + } + + public bool Store(T row) + { + SqliteCommand cmd = new SqliteCommand(); + + string query = ""; + List names = new List(); + List values = new List(); + + foreach (FieldInfo fi in m_Fields.Values) + { + names.Add(fi.Name); + values.Add(":" + fi.Name); + cmd.Parameters.Add(new SqliteParameter(":" + fi.Name, fi.GetValue(row).ToString())); + } + + if (m_DataField != null) + { + Dictionary data = + (Dictionary)m_DataField.GetValue(row); + + foreach (KeyValuePair kvp in data) + { + names.Add(kvp.Key); + values.Add(":" + kvp.Key); + cmd.Parameters.Add(new SqliteParameter(":" + kvp.Key, kvp.Value)); + } + } + + query = String.Format("replace into {0} (`", m_Realm) + String.Join("`,`", names.ToArray()) + "`) values (" + String.Join(",", values.ToArray()) + ")"; + + cmd.CommandText = query; + + if (ExecuteNonQuery(cmd) > 0) + return true; + + return false; + } + + public bool Delete(string field, string val) + { + SqliteCommand cmd = new SqliteCommand(); + + cmd.CommandText = String.Format("delete from {0} where `{1}` = :{1}", m_Realm, field); + cmd.Parameters.Add(new SqliteParameter(field, val)); + + if (ExecuteNonQuery(cmd) > 0) + return true; + + return false; + } + } +} -- cgit v1.1