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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 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.Reflection;
using System.IO;
using log4net;
using NHibernate;
using NHibernate.Cfg;
using NHibernate.Tool.hbm2ddl;
using OpenMetaverse;
using Environment = NHibernate.Cfg.Environment;
namespace OpenSim.Data.NHibernate
{
public class NHibernateManager
{
private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
private string dialect;
private Configuration configuration;
private ISessionFactory sessionFactory;
/// <summary>
/// Parses the connection string and creates the NHibernate configuration
/// </summary>
/// <param name="connect">NHibernate dialect, driver and connection string separated by ';'</param>
private void ParseConnectionString(string connect)
{
// Split out the dialect, driver, and connect string
char[] split = { ';' };
string[] parts = connect.Split(split, 3);
if (parts.Length != 3)
{
// TODO: make this a real exception type
throw new Exception("Malformed Inventory connection string '" + connect + "'");
}
dialect = parts[0];
// NHibernate setup
configuration = new Configuration();
configuration.SetProperty(Environment.ConnectionProvider,
"NHibernate.Connection.DriverConnectionProvider");
configuration.SetProperty(Environment.Dialect,
"NHibernate.Dialect." + dialect);
configuration.SetProperty(Environment.ConnectionDriver,
"NHibernate.Driver." + parts[1]);
configuration.SetProperty(Environment.ConnectionString, parts[2]);
configuration.AddAssembly("OpenSim.Data.NHibernate");
}
/// <summary>
/// Runs migration for the the store in assembly
/// </summary>
/// <param name="dialect">Dialect in use</param>
/// <param name="assembly">Assembly where migration files exist</param>
/// <param name="store">Name of the store in use</param>
private void RunMigration(string dialect, Assembly assembly, string store)
{
// Migration subtype is the folder name under which migrations are stored. For mysql this folder is
// MySQLDialect instead of MySQL5Dialect which is the dialect currently in use. To avoid renaming
// this folder each time the mysql version changes creating simple mapping:
String migrationSubType = dialect;
if (dialect.StartsWith("MySQL"))
{
migrationSubType = "MySQLDialect";
}
Migration migration = new Migration((System.Data.Common.DbConnection)sessionFactory.ConnectionProvider.GetConnection(), assembly, migrationSubType, store);
migration.Update();
}
/// <summary>
/// Initiate NHibernate Manager
/// </summary>
/// <param name="connect">NHibernate dialect, driver and connection string separated by ';'</param>
/// <param name="store">Name of the store</param>
public NHibernateManager(string connect, string store)
{
ParseConnectionString(connect);
//To create sql file uncomment code below and write the name of the file
//SchemaExport exp = new SchemaExport(cfg);
//exp.SetOutputFile("nameofthefile.sql");
//exp.Create(false, true);
Assembly assembly = GetType().Assembly;
sessionFactory = configuration.BuildSessionFactory();
RunMigration(dialect, assembly, store);
}
/// <summary>
/// Initiate NHibernate Manager with spesific assembly
/// </summary>
/// <param name="connect">NHibernate dialect, driver and connection string separated by ';'</param>
/// <param name="store">Name of the store</param>
/// <param name="assembly">Outside assembly to be included </param>
public NHibernateManager(string connect, string store, Assembly assembly)
{
ParseConnectionString(connect);
configuration.AddAssembly(assembly);
sessionFactory = configuration.BuildSessionFactory();
RunMigration(dialect, assembly, store);
}
public object Load(Type type, UUID uuid)
{
using (IStatelessSession session = sessionFactory.OpenStatelessSession())
{
object obj = null;
try
{
obj = session.Get(type.FullName, uuid);
}
catch (Exception e)
{
m_log.ErrorFormat("[NHIBERNATE] {0} of id {1} loading threw exception: "+ e.ToString(), type.Name, uuid);
}
return obj;
}
}
public bool Save(object obj)
{
try
{
using (IStatelessSession session = sessionFactory.OpenStatelessSession())
{
using (ITransaction transaction=session.BeginTransaction())
{
session.Insert(obj);
transaction.Commit();
return true;
}
}
}
catch (Exception e)
{
m_log.Error("[NHIBERNATE] issue inserting object ", e);
return false;
}
}
public bool Update(object obj)
{
try
{
using (IStatelessSession session = sessionFactory.OpenStatelessSession())
{
using (ITransaction transaction = session.BeginTransaction())
{
session.Update(obj);
transaction.Commit();
return true;
}
}
}
catch (Exception e)
{
m_log.Error("[NHIBERNATE] issue updating object ", e);
return false;
}
}
public bool Delete(object obj)
{
try
{
using (IStatelessSession session = sessionFactory.OpenStatelessSession())
{
using (ITransaction transaction = session.BeginTransaction())
{
session.Delete(obj);
transaction.Commit();
return true;
}
}
}
catch (Exception e)
{
m_log.Error("[NHIBERNATE] issue deleting object ", e);
return false;
}
}
public void DropSchema()
{
SchemaExport export = new SchemaExport(this.configuration);
export.Drop(true, true);
using (ISession session = sessionFactory.OpenSession())
{
ISQLQuery sqlQuery=session.CreateSQLQuery("drop table migrations");
sqlQuery.ExecuteUpdate();
}
}
public ISession GetSession()
{
return sessionFactory.OpenSession();
}
}
}
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