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Committing the incomplete table handler to get it into the tree. No user 

functionality yet
0.6.8-post-fixes
Melanie 2009-11-15 20:19:19 +00:00
parent ba77f0c2ac
commit 9997790211
1 changed files with 200 additions and 0 deletions
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OpenSim/Data/MySQL/MySQLGenericTableHandler.cs Normal file
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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 MySql.Data.MySqlClient;
using OpenMetaverse;
using OpenSim.Framework;
using OpenSim.Region.Framework.Interfaces;
namespace OpenSim.Data.MySQL
{
public class MySQLGenericTableHandler<T> : MySqlFramework where T: struct
{
private static readonly ILog m_log =
LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
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 MySQLGenericTableHandler(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.NonPublic |
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<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());
}
}
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<string> terms = new List<string>();
MySqlCommand cmd = new MySqlCommand();
for (int i = 0 ; i < fields.Length ; i++)
{
cmd.Parameters.AddWithValue(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(MySqlCommand cmd)
{
IDataReader reader = ExecuteReader(cmd);
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
{
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();
m_DataField.SetValue(row, data);
}
result.Add(row);
}
CloseReaderCommand(cmd);
return result.ToArray();
}
public T[] Get(string where)
{
MySqlCommand cmd = new MySqlCommand();
string query = String.Format("select * from {0} where {1}",
m_Realm, where);
cmd.CommandText = query;
return DoQuery(cmd);
}
public void Store(T row)
{
MySqlCommand cmd = new MySqlCommand();
string query = "";
}
}
}