Implemented readmarkers for threads; implemented LoadIdsByConditions within transaction; refactored actions; InsertOrUpdateChange now takes dataToInsert and DataToUpdate; fixed a deadlock in InsertOrUpdateChange

Builder/IISMainHandler/build.txt

@@ -1 +1 @@
-327
+347

Builder/IISUploadHandler/build.txt

@@ -1 +1 @@
-59
+79

Common/actions/AbstractChange.cs

@@ -26,12 +26,9 @@ namespace FLocal.Common.actions {
 
 		public readonly ISqlObjectTableSpec tableSpec;
 
-		protected readonly Dictionary<string, AbstractFieldValue> data;
-
-		protected AbstractChange(ISqlObjectTableSpec tableSpec, Dictionary<string, AbstractFieldValue> data) {
+		protected AbstractChange(ISqlObjectTableSpec tableSpec, IEnumerable<AbstractFieldValue> data) {
 			this.tableSpec = tableSpec;
-			this.data = data;
-			this.references = from kvp in data where kvp.Value is ReferenceFieldValue select ((ReferenceFieldValue)kvp.Value).referenced;
+			this.references = from val in data where val is ReferenceFieldValue select ((ReferenceFieldValue)val).referenced;
 			this.isApplied = false;
 		}
 

Common/actions/ChangeSet.cs

@@ -19,12 +19,13 @@ namespace FLocal.Common.actions {
 				return Cache<IEnumerable<string>>.instance.get(
 					tablesLockOrder_locker,
 					() => new List<string>() {
-						"Accounts",
-						"Users",
-						"Boards",
-						"Threads",
-						"Posts",
-						"Sessions",
+						dataobjects.Account.TableSpec.TABLE,
+						dataobjects.User.TableSpec.TABLE,
+						dataobjects.Board.TableSpec.TABLE,
+						dataobjects.Thread.TableSpec.TABLE,
+						dataobjects.Post.TableSpec.TABLE,
+						dataobjects.Thread.ReadMarkerTableSpec.TABLE,
+						dataobjects.Session.TableSpec.TABLE,
 					}
 				);
 			}
@@ -94,7 +95,9 @@ namespace FLocal.Common.actions {
 			//if(!this.isProcessed) throw new CriticalException("ChangeSet is not processed yet");
 			foreach(KeyValuePair<string, HashSet<AbstractChange>> kvp in this.changesByTable) {
 				foreach(AbstractChange change in kvp.Value) {
+					if(change.getId().HasValue) {
 						change.tableSpec.refreshSqlObject(change.getId().Value);
+					} //otherwise we're disposing because of sql error or something, so we should show real cause of problem, not "id is null"
 				}
 			}
 		}

Common/actions/InsertChange.cs

@@ -9,9 +9,12 @@ namespace FLocal.Common.actions {
 
 		private int? id;
 
+		private Dictionary<string, AbstractFieldValue> data;
+
 		public InsertChange(ISqlObjectTableSpec tableSpec, Dictionary<string, AbstractFieldValue> data)
-			: base(tableSpec, data) {
+			: base(tableSpec, from kvp in data select kvp.Value) {
 			this.id = null;
+			this.data = data;
 		}
 	
 		public override int? getId() {

Common/actions/InsertOrUpdateChange.cs

@@ -13,10 +13,15 @@ namespace FLocal.Common.actions {
 
 		private AbstractCondition condition;
 
-		public InsertOrUpdateChange(ISqlObjectTableSpec tableSpec, Dictionary<string, AbstractFieldValue> data, AbstractCondition condition)
-			: base(tableSpec, data) {
+		private Dictionary<string, AbstractFieldValue> dataToInsert;
+		private Dictionary<string, AbstractFieldValue> dataToUpdate;
+
+		public InsertOrUpdateChange(ISqlObjectTableSpec tableSpec, Dictionary<string, AbstractFieldValue> dataToInsert, Dictionary<string, AbstractFieldValue> dataToUpdate, AbstractCondition condition)
+			: base(tableSpec, (from kvp in dataToInsert select kvp.Value).Union(from kvp in dataToUpdate select kvp.Value)) {
 			this.id = null;
 			this.condition = condition;
+			this.dataToInsert = dataToInsert;
+			this.dataToUpdate = dataToUpdate;
 		}
 
 		public override int? getId() {
@@ -32,7 +37,7 @@ namespace FLocal.Common.actions {
 				Config.instance.mainConnection.lockRow(transaction, this.tableSpec, this.id.ToString());
 			} else {
 				Config.instance.mainConnection.lockTable(transaction, this.tableSpec);
-				ids = Config.instance.mainConnection.LoadIdsByConditions(this.tableSpec, this.condition, Diapasone.unlimited, new JoinSpec[0]);
+				ids = Config.instance.mainConnection.LoadIdsByConditions(transaction, this.tableSpec, this.condition, Diapasone.unlimited, new JoinSpec[0], new SortSpec[0], false);
 				if(ids.Count > 1) {
 					throw new CriticalException("Not unique");
 				} else if(ids.Count == 1) {
@@ -44,11 +49,12 @@ namespace FLocal.Common.actions {
 		}
 
 		protected override void doApply(Transaction transaction) {
+			if(this.id.HasValue) {
+				Dictionary<string, string> row = Config.instance.mainConnection.LoadByIds(transaction, this.tableSpec, new List<string>() { this.id.ToString() })[0];
 				Dictionary<string, string> processedData = new Dictionary<string,string>();
-			foreach(KeyValuePair<string, AbstractFieldValue> kvp in this.data) {
-				processedData[kvp.Key] = kvp.Value.getStringRepresentation();
+				foreach(KeyValuePair<string, AbstractFieldValue> kvp in this.dataToUpdate) {
+					processedData[kvp.Key] = kvp.Value.getStringRepresentation(row[kvp.Key]);
 				}
-			if(this.id.HasValue) {
 				Config.instance.mainConnection.update(
 					transaction,
 					this.tableSpec,
@@ -56,6 +62,10 @@ namespace FLocal.Common.actions {
 					processedData
 				);
 			} else {
+				Dictionary<string, string> processedData = new Dictionary<string,string>();
+				foreach(KeyValuePair<string, AbstractFieldValue> kvp in this.dataToInsert) {
+					processedData[kvp.Key] = kvp.Value.getStringRepresentation();
+				}
 				Config.instance.mainConnection.insert(
 					transaction,
 					this.tableSpec,

Common/actions/UpdateChange.cs

@@ -8,10 +8,12 @@ namespace FLocal.Common.actions {
 	public class UpdateChange : AbstractChange {
 
 		private readonly int id;
+		private Dictionary<string, AbstractFieldValue> data;
 
 		public UpdateChange(ISqlObjectTableSpec tableSpec, Dictionary<string, AbstractFieldValue> data, int id)
-			: base(tableSpec, data) {
+			: base(tableSpec, from kvp in data select kvp.Value) {
 			this.id = id;
+			this.data = data;
 		}
 
 		public override int? getId() {

Common/dataobjects/Post.cs

@@ -142,7 +142,7 @@ namespace FLocal.Common.dataobjects {
 			);
 		}
 
-		public XElement exportToXmlWithoutThread(UserContext context, bool includeParentPost) {
+		public XElement exportToXmlWithoutThread(UserContext context, bool includeParentPost, params XElement[] additional) {
 			XElement result = new XElement("post",
 				new XElement("id", this.id),
 				new XElement("poster", this.poster.exportToXmlForViewing(context)),
@@ -160,6 +160,9 @@ namespace FLocal.Common.dataobjects {
 					result.Add(new XElement("parentPost", this.parentPost.exportToXmlWithoutThread(context, false)));
 				}
 			}
+			if(additional.Length > 0) {
+				result.Add(additional);
+			}
 			return result;
 		}
 

Common/dataobjects/Thread.cs

@@ -30,6 +30,18 @@ namespace FLocal.Common.dataobjects {
 			public void refreshSqlObject(int id) { Refresh(id); }
 		}
 
+		public class ReadMarkerTableSpec : ISqlObjectTableSpec {
+			public const string TABLE = "Threads_ReadMarkers";
+			public const string FIELD_ID = "Id";
+			public const string FIELD_THREADID = "ThreadId";
+			public const string FIELD_ACCOUNTID = "AccountId";
+			public const string FIELD_POSTID = "PostId";
+			public static readonly ReadMarkerTableSpec instance = new ReadMarkerTableSpec();
+			public string name { get { return TABLE; } }
+			public string idName { get { return FIELD_ID; } }
+			public void refreshSqlObject(int id) {  }
+		}
+
 		protected override ISqlObjectTableSpec table { get { return TableSpec.instance; } }
 
 		private int _boardId;
@@ -152,7 +164,7 @@ namespace FLocal.Common.dataobjects {
 			);
 		}
 
-		public XElement exportToXml(UserContext context, bool includeFirstPost) {
+		public XElement exportToXml(UserContext context, bool includeFirstPost, params XElement[] additional) {
 			XElement result = new XElement("thread",
 				new XElement("id", this.id),
 				new XElement("firstPostId", this.firstPostId),
@@ -164,13 +176,15 @@ namespace FLocal.Common.dataobjects {
 				new XElement("isLocked", this.isLocked),
 				new XElement("totalPosts", this.totalPosts),
 				new XElement("totalViews", this.totalViews),
-				new XElement("hasNewPosts", this.hasNewPosts()),
 				new XElement("bodyShort", this.firstPost.bodyShort),
 				context.formatTotalPosts(this.totalPosts)
 			);
 			if(includeFirstPost) {
 				result.Add(new XElement("firstPost", this.firstPost.exportToXmlWithoutThread(context, false)));
 			}
+			if(additional.Length > 0) {
+				result.Add(additional);
+			}
 			return result;
 		}
 
@@ -210,6 +224,131 @@ namespace FLocal.Common.dataobjects {
 			});
 		}
 
+		private Post getLastRead(Account account) {
+			List<string> stringIds = Config.instance.mainConnection.LoadIdsByConditions(
+				ReadMarkerTableSpec.instance,
+				new ComplexCondition(
+					ConditionsJoinType.AND,
+					new ComparisonCondition(
+						ReadMarkerTableSpec.instance.getColumnSpec(ReadMarkerTableSpec.FIELD_THREADID),
+						ComparisonType.EQUAL,
+						this.id.ToString()
+					),
+					new ComparisonCondition(
+						ReadMarkerTableSpec.instance.getColumnSpec(ReadMarkerTableSpec.FIELD_ACCOUNTID),
+						ComparisonType.EQUAL,
+						account.id.ToString()
+					)
+				),
+				Diapasone.unlimited
+			);
+			if(stringIds.Count > 1) {
+				throw new CriticalException("more than one row");
+			}
+			if(stringIds.Count < 1) {
+				return null;
+			}
+			Dictionary<string, string> data = Config.instance.mainConnection.LoadById(ReadMarkerTableSpec.instance, stringIds[0]);
+			if((data[ReadMarkerTableSpec.FIELD_POSTID] == "") || (data[ReadMarkerTableSpec.FIELD_POSTID] == null)) {
+				return null;
+			}
+			return Post.LoadById(int.Parse(data[ReadMarkerTableSpec.FIELD_POSTID]));
+		}
+
+		public int getLastReadId(Session session) {
+			if(session == null) {
+				return 0;
+			}
+			Post post = this.getLastRead(session.account);
+			if(post == null) {
+				return 0;
+			}
+			return post.id;
+		}
+
+		public void markAsRead(Account account, Post minPost, Post maxPost) {
+			ChangeSetUtil.ApplyChanges(new AbstractChange[] {
+				new InsertOrUpdateChange(
+					ReadMarkerTableSpec.instance,
+					new Dictionary<string,AbstractFieldValue> {
+						{
+							ReadMarkerTableSpec.FIELD_THREADID,
+							new ScalarFieldValue(this.id.ToString())
+						},
+						{
+							ReadMarkerTableSpec.FIELD_ACCOUNTID,
+							new ScalarFieldValue(account.id.ToString())
+						},
+						{
+							ReadMarkerTableSpec.FIELD_POSTID,
+							new ScalarFieldValue(
+								(minPost.id < this.firstPostId)
+								?
+								maxPost.id.ToString()
+								:
+								null
+							) },
+					},
+					new Dictionary<string,AbstractFieldValue> {
+						{
+							ReadMarkerTableSpec.FIELD_POSTID,
+							new IncrementFieldValue(
+								s => {
+									if((s == null) || (s == "")) {
+										s = "0"; //workaround
+									}
+									if(maxPost.id < int.Parse(s)) {
+										return (s == "0") ? null : s; //if some newer posts were already read
+									}
+									long count = Config.instance.mainConnection.GetCountByConditions(
+										Post.TableSpec.instance,
+										new ComplexCondition(
+											ConditionsJoinType.AND,
+											new ComparisonCondition(
+												Post.TableSpec.instance.getColumnSpec(Post.TableSpec.FIELD_THREADID),
+												ComparisonType.EQUAL,
+												this.id.ToString()
+											),
+											new ComparisonCondition(
+												Post.TableSpec.instance.getIdSpec(),
+												ComparisonType.GREATERTHAN,
+												s
+											),
+											new ComparisonCondition(
+												Post.TableSpec.instance.getIdSpec(),
+												ComparisonType.LESSTHAN,
+												minPost.id.ToString()
+											)
+										),
+										new JoinSpec[0]
+									);
+									if(count > 0) {
+										return (s == "0") ? null : s; //if there are some unread posts earlier than minPost
+									} else {
+										return maxPost.id.ToString();
+									}
+								}
+							)
+						}
+
+					},
+					new ComplexCondition(
+						ConditionsJoinType.AND,
+						new ComparisonCondition(
+							ReadMarkerTableSpec.instance.getColumnSpec(ReadMarkerTableSpec.FIELD_THREADID),
+							ComparisonType.EQUAL,
+							this.id.ToString()
+						),
+						new ComparisonCondition(
+							ReadMarkerTableSpec.instance.getColumnSpec(ReadMarkerTableSpec.FIELD_ACCOUNTID),
+							ComparisonType.EQUAL,
+							account.id.ToString()
+						)
+					)
+				)
+			});
+		}
+
 	}
 
 }

Core/DB/IDBConnection.cs

@@ -20,6 +20,8 @@ namespace FLocal.Core.DB {
 
 		List<Dictionary<string, string>> LoadByIds(Transaction transaction, ITableSpec table, List<string> ids);
 
+		List<string> LoadIdsByConditions(Transaction transaction, ITableSpec table, conditions.AbstractCondition conditions, Diapasone diapasone, JoinSpec[] joins, SortSpec[] sorts, bool allowHugeLists);
+
 		void update(Transaction transaction, ITableSpec table, string id, Dictionary<string, string> data);
 
 		string insert(Transaction transaction, ITableSpec table, Dictionary<string, string> data);

Core/DB/conditions/ComplexCondition.cs

@@ -8,9 +8,9 @@ namespace FLocal.Core.DB.conditions {
 
 		public readonly ConditionsJoinType type;
 
-		public readonly List<NotEmptyCondition> innerConditions;
+		public readonly NotEmptyCondition[] innerConditions;
 
-		public ComplexCondition(ConditionsJoinType type, List<NotEmptyCondition> innerConditions) {
+		public ComplexCondition(ConditionsJoinType type, params NotEmptyCondition[] innerConditions) {
 			this.type = type;
 			this.innerConditions = innerConditions;
 		}

IISMainHandler/handlers/BoardHandler.cs

@@ -26,7 +26,7 @@ namespace FLocal.IISHandler.handlers {
 				new XElement("currentLocation", board.exportToXmlSimpleWithParent(context)),
 				new XElement("boards", from subBoard in board.subBoards select subBoard.exportToXml(context, true)),
 				new XElement("threads", 
-					(from thread in threads select thread.exportToXml(context, false)).addNumbers(),
+					(from thread in threads select thread.exportToXml(context, false, new XElement("afterLastRead", thread.getLastReadId(context.session) + 1))).addNumbers(),
 					pageOuter.exportToXml(1, 5, 1)
 				)
 			};

IISMainHandler/handlers/PostHandler.cs

@@ -4,6 +4,7 @@ using System.Linq;
 using System.Text;
 using System.Web;
 using System.Xml.Linq;
+using FLocal.Core;
 using FLocal.Common;
 using FLocal.Common.dataobjects;
 
@@ -19,10 +20,17 @@ namespace FLocal.IISHandler.handlers {
 
 		override protected XElement[] getSpecificData(WebContext context) {
 			Post post = Post.LoadById(int.Parse(context.requestParts[1]));
+
+			int lastReadId = post.thread.getLastReadId(context.session);
+
 			post.thread.incrementViewsCounter();
+			if(context.session != null) {
+				post.thread.markAsRead(context.session.account, post, post);
+			}
+
 			return new XElement[] {
 				new XElement("currentLocation", post.exportToXmlSimpleWithParent(context)),
-				new XElement("posts", post.exportToXmlWithoutThread(context, true))
+				new XElement("posts", post.exportToXmlWithoutThread(context, true, new XElement("isUnread", (post.id > lastReadId).ToPlainString())))
 			};
 		}
 

IISMainHandler/handlers/ThreadHandler.cs

@@ -32,7 +32,6 @@ namespace FLocal.IISHandler.handlers {
 							Post.TableSpec.instance,
 							new ComplexCondition(
 								ConditionsJoinType.AND,
-								new List<NotEmptyCondition> {
 								new ComparisonCondition(
 									Post.TableSpec.instance.getColumnSpec(Post.TableSpec.FIELD_THREADID),
 									ComparisonType.EQUAL,
@@ -42,8 +41,7 @@ namespace FLocal.IISHandler.handlers {
 									Post.TableSpec.instance.getIdSpec(),
 									ComparisonType.LESSTHAN,
 									int.Parse(context.requestParts[2].PHPSubstring(1)).ToString()
-									),
-								}
+								)
 							),
 							new JoinSpec[0]
 						)
@@ -52,11 +50,22 @@ namespace FLocal.IISHandler.handlers {
 				2
 			);
 			IEnumerable<Post> posts = thread.getPosts(pageOuter, context);
+
+			int lastReadId = thread.getLastReadId(context.session);
+
 			thread.incrementViewsCounter();
+			if((context.session != null) && (posts.Count() > 0)) {
+				thread.markAsRead(
+					context.session.account,
+					(from post in posts orderby post.id ascending select post).First(),
+					(from post in posts orderby post.id descending select post).First()
+				);
+			}
+
 			return new XElement[] {
 				new XElement("currentLocation", thread.exportToXmlSimpleWithParent(context)),
 				new XElement("posts",
-					from post in posts select post.exportToXmlWithoutThread(context, true),
+					from post in posts select post.exportToXmlWithoutThread(context, true, new XElement("isUnread", (post.id > lastReadId).ToPlainString())),
 					pageOuter.exportToXml(2, 5, 2)
 				)
 			};

MySQLConnector/Connection.cs

@@ -32,6 +32,7 @@ namespace FLocal.MySQLConnector {
 		}
 
 		private List<Dictionary<string, string>> _LoadByIds(DbCommand command, ITableSpec table, List<string> ids, bool forUpdate) {
+			lock(this) {
 				command.CommandType = System.Data.CommandType.Text;
 
 				ParamsHolder paramsHolder = new ParamsHolder();
@@ -73,6 +74,7 @@ namespace FLocal.MySQLConnector {
 				}
 				return result;
 			}
+		}
 
 		public List<Dictionary<string, string>> LoadByIds(ITableSpec table, List<string> ids) {
 			lock(this) {
@@ -82,10 +84,7 @@ namespace FLocal.MySQLConnector {
 			}
 		}
 
-		public List<string> LoadIdsByConditions(ITableSpec table, FLocal.Core.DB.conditions.AbstractCondition conditions, Diapasone diapasone, JoinSpec[] joins, SortSpec[] sorts, bool allowHugeLists) {
-			lock(this) {
-				using(DbCommand command = this.connection.CreateCommand()) {
-
+		private List<string> _LoadIdsByConditions(DbCommand command, ITableSpec table, FLocal.Core.DB.conditions.AbstractCondition conditions, Diapasone diapasone, JoinSpec[] joins, SortSpec[] sorts, bool allowHugeLists) {
 			command.CommandType = System.Data.CommandType.Text;
 
 			var conditionsCompiled = ConditionCompiler.Compile(conditions, this.traits);
@@ -150,6 +149,12 @@ namespace FLocal.MySQLConnector {
 				return result;
 			}
 		}
+
+		public List<string> LoadIdsByConditions(ITableSpec table, FLocal.Core.DB.conditions.AbstractCondition conditions, Diapasone diapasone, JoinSpec[] joins, SortSpec[] sorts, bool allowHugeLists) {
+			lock(this) {
+				using(DbCommand command = this.connection.CreateCommand()) {
+					return this._LoadIdsByConditions(command, table, conditions, diapasone, joins, sorts, allowHugeLists);
+				}
 			}
 		}
 
@@ -231,6 +236,16 @@ namespace FLocal.MySQLConnector {
 			}
 		}
 
+		public List<string> LoadIdsByConditions(FLocal.Core.DB.Transaction _transaction, ITableSpec table, FLocal.Core.DB.conditions.AbstractCondition conditions, Diapasone diapasone, JoinSpec[] joins, SortSpec[] sorts, bool allowHugeLists) {
+			Transaction transaction = (Transaction)_transaction;
+			lock(this) {
+				using(DbCommand command = transaction.sqlconnection.CreateCommand()) {
+					command.Transaction = transaction.sqltransaction;
+					return this._LoadIdsByConditions(command, table, conditions, diapasone, joins, sorts, allowHugeLists);
+				}
+			}
+		}
+
 		public void update(FLocal.Core.DB.Transaction _transaction, ITableSpec table, string id, Dictionary<string, string> data) {
 			Transaction transaction = (Transaction)_transaction;
 			lock(transaction) {

templates/Full/elems/PostInfo.xslt

@@ -17,10 +17,21 @@
 									<td align="left" width="65%" valign="top">
 										<a target="_blank" class="separate">
 											<xsl:attribute name="href">/Post/<xsl:value-of select="id"/>/</xsl:attribute>
-											<img border="0" src="/static/images/book-notread.gif"  alt="" style="vertical-align: text-bottom" />
+											<img border="0" alt="" style="vertical-align: text-bottom">
+												<xsl:choose>
+													<xsl:when test="isUnread='true'">
+														<xsl:attribute name="src">/static/images/book-notread.gif</xsl:attribute>
+													</xsl:when>
+													<xsl:otherwise>
+														<xsl:attribute name="src">/static/images/book-read.gif</xsl:attribute>
+													</xsl:otherwise>
+												</xsl:choose>
+											</img>
 										</a>
 										<b class="separate"><xsl:value-of select="title"/></b>
+										<xsl:if test="isUnread='true'">
 											<img alt="new" src="/static/images/new.gif" />
+										</xsl:if>
 										<xsl:if test="parentPost/post">
 											<font class="small separate">
 												<xsl:text>[</xsl:text>

templates/Full/elems/ThreadInfo.xslt

@@ -15,7 +15,7 @@
 				<xsl:attribute name="title"><xsl:value-of select="bodyShort"/></xsl:attribute>
 				<img alt="*" hspace="5" style="vertical-align: text-bottom">
 					<xsl:choose>
-						<xsl:when test="hasNewPosts='true'">
+						<xsl:when test="afterLastRead&lt;=lastPostId">
 							<xsl:attribute name="src">/static/images/book-notread.gif</xsl:attribute>
 						</xsl:when>
 						<xsl:otherwise>
@@ -24,7 +24,15 @@
 					</xsl:choose>
 				</img>
 				<a>
-					<xsl:attribute name="href">/Thread/<xsl:value-of select="id"/>/</xsl:attribute>
+					<xsl:attribute name="href">
+						<xsl:text>/Thread/</xsl:text>
+						<xsl:value-of select="id"/>
+						<xsl:text>/</xsl:text>
+						<xsl:if test="afterLastRead&lt;=lastPostId">
+							<xsl:text>p</xsl:text>
+							<xsl:value-of select="afterLastRead"/>
+						</xsl:if>
+					</xsl:attribute>
 					<xsl:if test="isAnnouncement='true'">
 						<img src="/static/images/sticky.gif" class="separate" width="16" height="16" alt="" border="0" style="vertical-align: text-bottom;" />
 					</xsl:if>