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1/*
2 * Copyright (c) Contributors, http://opensimulator.org/
3 * See CONTRIBUTORS.TXT for a full list of copyright holders.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the OpenSim Project nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28using System.Reflection;
29using log4net;
30using OpenMetaverse;
31using OpenSim.Framework;
32using OpenSim.Region.Framework.Interfaces;
33using NHibernate;
34using NHibernate.Criterion;
35using System.Collections;
36using System;
37
38namespace OpenSim.Data.NHibernate
39{
40 /// <summary>
41 /// A User storage interface for the DB4o database system
42 /// </summary>
43 public class NHibernateEstateData : IEstateDataStore
44 {
45
46 #region Fields
47
48 private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
49
50 public NHibernateManager manager;
51
52 public string Name
53 {
54 get { return "NHibernateEstateData"; }
55 }
56
57 public string Version
58 {
59 get { return "0.1"; }
60 }
61
62 #endregion
63
64 #region Startup and shutdown.
65
66 public void Initialise()
67 {
68 m_log.Info("[NHIBERNATE]: " + Name + " cannot be default-initialized!");
69 throw new PluginNotInitialisedException(Name);
70 }
71
72 public void Initialise(string connect)
73 {
74
75 m_log.InfoFormat("[NHIBERNATE] Initializing " + Name + ".");
76 manager = new NHibernateManager(connect, "EstateStore");
77 }
78
79 public void Dispose() { }
80
81 #endregion
82
83 #region IEstateDataStore Members
84
85 public EstateSettings LoadEstateSettings(UUID regionID)
86 {
87 EstateRegionLink link = LoadEstateRegionLink(regionID);
88
89 // Ensure that estate settings exist for the link
90 if (link != null)
91 {
92 if (manager.Load(typeof(EstateSettings), link.EstateID) == null)
93 {
94 // Delete broken link
95 manager.Delete(link);
96 link = null;
97 }
98 }
99
100 // If estate link does not exist create estate settings and link it to region.
101 if (link == null)
102 {
103 EstateSettings estateSettings = new EstateSettings();
104 //estateSettings.EstateOwner = UUID.Random();
105 //estateSettings.BlockDwell = false;
106 object identifier = manager.Insert(estateSettings);
107
108 if (identifier == null)
109 {
110 // Saving failed. Error is logged in the manager.
111 return null;
112 }
113
114 uint estateID = (uint)identifier;
115 link = new EstateRegionLink();
116 link.EstateRegionLinkID = UUID.Random();
117 link.RegionID = regionID;
118 link.EstateID = estateID;
119 manager.Insert(link);
120 }
121
122 // Load estate settings according to the existing or created link.
123 return (EstateSettings)manager.Load(typeof(EstateSettings), link.EstateID);
124 }
125
126 public void StoreEstateSettings(EstateSettings estateSettings)
127 {
128 // Estates are always updated when stored.
129 // Insert is always done via. load method as with the current API
130 // this is explicitly the only way to create region link.
131 manager.Update(estateSettings);
132 }
133
134 #endregion
135
136 #region Private Utility Methods
137 private EstateRegionLink LoadEstateRegionLink(UUID regionID)
138 {
139 ICriteria criteria = manager.GetSession().CreateCriteria(typeof(EstateRegionLink));
140 criteria.Add(Expression.Eq("RegionID", regionID));
141 IList links = criteria.List();
142
143 // Fail fast if more than one estate links exist
144 if (links.Count > 1)
145 {
146 m_log.Error("[NHIBERNATE]: Region had more than one estate linked: " + regionID);
147 throw new Exception("[NHIBERNATE]: Region had more than one estate linked: " + regionID);
148 }
149
150 if (links.Count == 1)
151 {
152 return (EstateRegionLink)links[0];
153 }
154 else
155 {
156 return null;
157 }
158 }
159 #endregion
160 }
161}