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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.Reflection;
using log4net;
using OpenMetaverse;
using OpenSim.Framework;
using OpenSim.Region.Framework.Interfaces;
using NHibernate;
using NHibernate.Criterion;
using System.Collections;
using System;
namespace OpenSim.Data.NHibernate
{
/// <summary>
/// A User storage interface for the DB4o database system
/// </summary>
public class NHibernateEstateData : IEstateDataStore
{
#region Fields
private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
public NHibernateManager manager;
public string Name
{
get { return "NHibernateEstateData"; }
}
public string Version
{
get { return "0.1"; }
}
#endregion
#region Startup and shutdown.
public void Initialise()
{
m_log.Info("[NHIBERNATE]: " + Name + " cannot be default-initialized!");
throw new PluginNotInitialisedException(Name);
}
public void Initialise(string connect)
{
m_log.InfoFormat("[NHIBERNATE] Initializing " + Name + ".");
manager = new NHibernateManager(connect, "EstateStore");
}
public void Dispose() { }
#endregion
#region IEstateDataStore Members
public EstateSettings LoadEstateSettings(UUID regionID)
{
EstateRegionLink link = LoadEstateRegionLink(regionID);
// Ensure that estate settings exist for the link
if (link != null)
{
if (manager.Load(typeof(EstateSettings), link.EstateID) == null)
{
// Delete broken link
manager.Delete(link);
link = null;
}
}
// If estate link does not exist create estate settings and link it to region.
if (link == null)
{
EstateSettings estateSettings = new EstateSettings();
//estateSettings.EstateOwner = UUID.Random();
//estateSettings.BlockDwell = false;
object identifier = manager.Insert(estateSettings);
if (identifier == null)
{
// Saving failed. Error is logged in the manager.
return null;
}
uint estateID = (uint)identifier;
link = new EstateRegionLink();
link.EstateRegionLinkID = UUID.Random();
link.RegionID = regionID;
link.EstateID = estateID;
manager.Insert(link);
}
// Load estate settings according to the existing or created link.
return (EstateSettings)manager.Load(typeof(EstateSettings), link.EstateID);
}
public void StoreEstateSettings(EstateSettings estateSettings)
{
// Estates are always updated when stored.
// Insert is always done via. load method as with the current API
// this is explicitly the only way to create region link.
manager.Update(estateSettings);
}
#endregion
#region Private Utility Methods
private EstateRegionLink LoadEstateRegionLink(UUID regionID)
{
ICriteria criteria = manager.GetSession().CreateCriteria(typeof(EstateRegionLink));
criteria.Add(Expression.Eq("RegionID", regionID));
IList links = criteria.List();
// Fail fast if more than one estate links exist
if (links.Count > 1)
{
m_log.Error("[NHIBERNATE]: Region had more than one estate linked: " + regionID);
throw new Exception("[NHIBERNATE]: Region had more than one estate linked: " + regionID);
}
if (links.Count == 1)
{
return (EstateRegionLink)links[0];
}
else
{
return null;
}
}
#endregion
}
}
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