/// <summary>
/// Creates a new message in the given thread
/// Caller should validate input parameters.
/// </summary>
/// <param name="threadID">Thread wherein the new message will be placed</param>
/// <param name="userID">User who posted this message</param>
/// <param name="messageText">Message text</param>
/// <param name="messageAsHTML">Message text as HTML</param>
/// <param name="userIDIPAddress">IP address of user calling this method</param>
/// <param name="messageAsXML">Message text as XML, which is the result of the parse action on MessageText.</param>
/// <param name="subscribeToThread">if set to <c>true</c> [subscribe to thread].</param>
/// <param name="threadUpdatedNotificationTemplate">The thread updated notification template.</param>
/// <param name="emailData">The email data.</param>
/// <param name="sendReplyNotifications">Flag to signal to send reply notifications. If set to false no notifications are mailed,
/// otherwise a notification is mailed to all subscribers to the thread the new message is posted in</param>
/// <returns>MessageID if succeeded, 0 if not.</returns>
public static int CreateNewMessageInThread(int threadID, int userID, string messageText, string messageAsHTML, string userIDIPAddress,
string messageAsXML, bool subscribeToThread, string threadUpdatedNotificationTemplate, Dictionary<string,string> emailData,
bool sendReplyNotifications)
{
Transaction trans = new Transaction(IsolationLevel.ReadCommitted, "InsertNewMessage");
int messageID = 0;
try
{
DateTime postingDate = DateTime.Now;
messageID = InsertNewMessage(threadID, userID, messageText, messageAsHTML, userIDIPAddress, messageAsXML, trans, postingDate);
MessageManager.UpdateStatisticsAfterMessageInsert(threadID, userID, trans, postingDate, true, subscribeToThread);
trans.Commit();
}
catch(Exception)
{
trans.Rollback();
throw;
}
finally
{
trans.Dispose();
}
if(sendReplyNotifications)
{
// send notification email to all subscribers. Do this outside the transaction so a failed email send action doesn't terminate the save process
// of the message.
ThreadManager.SendThreadReplyNotifications(threadID, userID, threadUpdatedNotificationTemplate, emailData);
}
return messageID;
}
/// <summary>
/// Adds the thread with the ID specified to the support queue with the ID specified
/// </summary>
/// <param name="threadID">The thread ID.</param>
/// <param name="queueID">The queue ID.</param>
/// <param name="userID">The user ID of the user causing this thread to be placed in the queue specified.</param>
/// <param name="transactionToUse">The transaction to use. Is not null if there's a transaction in progress.</param>
/// <remarks>first removes the thread from a queue if it's in a queue</remarks>
public static void AddThreadToQueue(int threadID, int queueID, int userID, Transaction transactionToUse)
{
// first remove the thread from any queue it's in.
RemoveThreadFromQueue(threadID, transactionToUse);
// then add it to the queue specified.
SupportQueueThreadEntity supportQueueThread = new SupportQueueThreadEntity();
supportQueueThread.ThreadID = threadID;
supportQueueThread.QueueID = queueID;
supportQueueThread.PlacedInQueueByUserID = userID;
supportQueueThread.PlacedInQueueOn = DateTime.Now;
if(transactionToUse != null)
{
// transaction in progress, add the entity to the transaction
transactionToUse.Add(supportQueueThread);
}
supportQueueThread.Save();
}
/// <summary>
/// Gets the thread subscription object for the thread - user combination passed in. If there's no subscription, null is returned.
/// </summary>
/// <param name="threadID">The thread ID.</param>
/// <param name="userID">The user ID.</param>
/// <param name="transactionToUse">The transaction to use. Pass in the transaction object if this fetch has to take place inside a transaction</param>
/// <returns>
/// requested Threadsubscription entity or null if not found
/// </returns>
public static ThreadSubscriptionEntity GetThreadSubscription(int threadID, int userID, Transaction transactionToUse)
{
ThreadSubscriptionEntity toReturn = new ThreadSubscriptionEntity();
if(transactionToUse != null)
{
// transaction in progress, add entity to it so it's not blocked
transactionToUse.Add(toReturn);
}
// fetch the data
toReturn.FetchUsingPK(userID, threadID);
if(toReturn.IsNew)
{
// not found
return null;
}
// done. Don't commit a passed in transaction here, it's controlled by the caller.
return toReturn;
}
/// <summary>
/// Marks the thread as done.
/// </summary>
/// <param name="threadID">Thread ID.</param>
/// <returns></returns>
public static bool MarkThreadAsDone(int threadID)
{
// load the entity from the database
ThreadEntity thread = ThreadGuiHelper.GetThread(threadID);
if(thread == null)
{
// not found
return false;
}
// get the support queue the thread is in (if any)
SupportQueueEntity containingSupportQueue = SupportQueueGuiHelper.GetQueueOfThread(threadID);
thread.MarkedAsDone = true;
// if the thread is in a support queue, the thread has to be removed from that queue. This is a multi-entity action and therefore we've to start a
// transaction if that's the case. If not, we can use the easy route and simply save the thread and be done with it.
if(containingSupportQueue == null)
{
// not in a queue, simply save the thread.
return thread.Save();
}
// in a queue, so remove from the queue and save the entity.
Transaction trans = new Transaction(IsolationLevel.ReadCommitted, "MarkThreadDone");
trans.Add(thread);
try
{
// save the thread
bool result = thread.Save();
if(result)
{
// save succeeded, so remove from queue, pass the current transaction to the method so the action takes place inside this transaction.
SupportQueueManager.RemoveThreadFromQueue(threadID, trans);
}
trans.Commit();
return true;
}
catch
{
// rollback transaction
trans.Rollback();
throw;
}
finally
{
trans.Dispose();
}
}
/// <summary>
/// Creates a new message in the given thread and closes the thread right after the addition of the message,
/// which makes the just added message the 'close' message of the thread. Close messages are handy when the
/// closure of a thread is not obvious.
/// Caller should validate input parameters.
/// </summary>
/// <param name="threadID">Thread wherein the new message will be placed</param>
/// <param name="userID">User who posted this message</param>
/// <param name="messageText">Message text</param>
/// <param name="messageAsHTML">Message text as HTML</param>
/// <param name="userIDIPAddress">IP address of user calling this method</param>
/// <param name="messageAsXML">Message text as XML, which is the result of the parse action on MessageText.</param>
/// <param name="threadUpdatedNotificationTemplate">The thread updated notification template.</param>
/// <param name="emailData">The email data.</param>
/// <param name="sendReplyNotifications">Flag to signal to send reply notifications. If set to false no notifications are mailed,
/// otherwise a notification is mailed to all subscribers to the thread the new message is posted in</param>
/// <returns>MessageID if succeeded, 0 if not.</returns>
public static int CreateNewMessageInThreadAndCloseThread(int threadID, int userID, string messageText, string messageAsHTML,
string userIDIPAddress, string messageAsXML, string threadUpdatedNotificationTemplate, Dictionary<string, string> emailData,
bool sendReplyNotifications)
{
Transaction trans = new Transaction(IsolationLevel.ReadCommitted, "InsertNewMessage");
int messageID = 0;
try
{
DateTime postingDate = DateTime.Now;
messageID = InsertNewMessage(threadID, userID, messageText, messageAsHTML, userIDIPAddress, messageAsXML, trans, postingDate);
MessageManager.UpdateStatisticsAfterMessageInsert(threadID, userID, trans, postingDate, false, false);
ThreadEntity thread = new ThreadEntity();
trans.Add(thread);
thread.FetchUsingPK(threadID);
thread.IsClosed=true;
thread.IsSticky=false;
thread.MarkedAsDone = true;
bool result = thread.Save();
if(result)
{
// save succeeded, so remove from queue, pass the current transaction to the method so the action takes place inside this transaction.
SupportQueueManager.RemoveThreadFromQueue(threadID, trans);
}
trans.Commit();
}
catch(Exception)
{
trans.Rollback();
throw;
}
finally
{
trans.Dispose();
}
if(sendReplyNotifications)
{
// send notification email to all subscribers. Do this outside the transaction so a failed email send action doesn't terminate the save process
// of the message.
ThreadManager.SendThreadReplyNotifications(threadID, userID, threadUpdatedNotificationTemplate, emailData);
}
return messageID;
}
/// <summary>
/// Deletes the given Thread from the system, including <b>all</b> messages and related data in this Thread.
/// </summary>
/// <param name="ID">Thread to delete.</param>
/// <returns>True if succeeded, false otherwise</returns>
public static bool DeleteThread(int threadID)
{
// trying to delete the entity directly from the database without first loading it.
// for that we use an entity collection and use the DeleteMulti method with a filter on the PK.
PredicateExpression threadFilter = new PredicateExpression(ThreadFields.ThreadID == threadID);
Transaction trans = new Transaction(IsolationLevel.ReadCommitted, "DeleteThread");
try
{
DeleteThreads(threadFilter, trans);
trans.Commit();
return true;
}
catch
{
// error occured
trans.Rollback();
throw;
}
finally
{
trans.Dispose();
}
}
/// <summary>
/// Modifies the given role: it resets the system action rights for the given role to the given set of action rights and it modifies
/// the role description for the given role. If the user specified a role description that is already available, false will be returned to signal
/// that the save failed.
/// </summary>
/// <param name="actionRightIDs">The action rights.</param>
/// <param name="roleID">The role ID.</param>
/// <param name="roleDescription">The role description.</param>
/// <returns>true if succeeded, false otherwise</returns>
public static bool ModifyRole(List<int> actionRightIDs, int roleID, string roleDescription)
{
// read the existing role entity from the database.
RoleEntity roleToModify = new RoleEntity(roleID);
if(roleToModify.IsNew)
{
// not found
return false;
}
// check if the description is different. If so, we've to check if the new roledescription is already present. If so, we'll
// abort the save
if(roleToModify.RoleDescription != roleDescription)
{
if(CheckIfRoleDescriptionIsPresent(roleDescription))
{
// new description, is already present, fail
return false;
}
}
// all set. We're going to delete all Role - SystemAction Rights combinations first, as we're going to re-insert them later on.
// We'll use a transaction to be able to roll back all our changes if something fails.
Transaction trans = new Transaction(IsolationLevel.ReadCommitted, "ModifyRole");
try
{
RoleSystemActionRightCollection roleActionRights = new RoleSystemActionRightCollection();
// add this collection to the transaction so all actions executed through this collection will be inside the transaction
trans.Add(roleActionRights);
// delete all role-systemactionright combinations directly from the database, by issuing a direct delete on the database, using a filter
// on roleid
roleActionRights.DeleteMulti(RoleSystemActionRightFields.RoleID == roleID);
// add new role-systemactionright entities which we'll save to the database after that
foreach(int actionRightID in actionRightIDs)
{
RoleSystemActionRightEntity toAdd = new RoleSystemActionRightEntity();
toAdd.ActionRightID = actionRightID;
toAdd.RoleID = roleID;
roleActionRights.Add(toAdd);
}
// save the new entities to the database
roleActionRights.SaveMulti();
// we'll now save the role and the role description, if it's changed. Otherwise the save action will be a no-op.
// add it to the transaction
trans.Add(roleToModify);
roleToModify.RoleDescription = roleDescription;
roleToModify.Save();
// all done, commit the transaction
trans.Commit();
return true;
}
catch
{
// failed, roll back transaction.
trans.Rollback();
throw;
}
finally
{
trans.Dispose();
}
}
/// <summary>
/// Deletes the user with the ID passed in. Will reset all posts made by the user to the userid 0.
/// </summary>
/// <param name="userID">The user ID.</param>
/// <remarks>Can't delete user 0</remarks>
/// <returns>true if succeeded, false otherwise</returns>
public static bool DeleteUser(int userID)
{
if(userID == 0)
{
// can't delete the Anonymous coward user.
return false;
}
UserEntity toDelete = UserGuiHelper.GetUser(userID);
if(toDelete==null)
{
// user doesn't exist
return false;
}
// all actions have to take place in a transaction.
Transaction trans = new Transaction(IsolationLevel.ReadCommitted, "DeleteUser");
try
{
// we'll first update all PostedByUserId fields of all messages which are posted by the user to delete.
MessageEntity messageUpdater = new MessageEntity();
messageUpdater.PostedByUserID = 0; // reset to AC.
MessageCollection messages = new MessageCollection();
trans.Add(messages); // add to the transaction
// update all entities directly in the DB, which match the following filter and update them with the new values set in messageUpdater.
messages.UpdateMulti(messageUpdater, (MessageFields.PostedByUserID == userID));
// set the startuser of threads started by this user to 0
ThreadEntity threadUpdater = new ThreadEntity();
threadUpdater.StartedByUserID = 0;
ThreadCollection threads = new ThreadCollection();
trans.Add(threads);
threads.UpdateMulti(threadUpdater, (ThreadFields.StartedByUserID == userID));
// remove the user from the UserRoles set, as the user shouldn't be in any roles.
RoleUserCollection roleUsersDeleter = new RoleUserCollection();
trans.Add(roleUsersDeleter);
// delete all entities directly from the DB which match the following filter.
roleUsersDeleter.DeleteMulti(RoleUserFields.UserID == userID);
// delete all bookmarks of user
BookmarkCollection bookmarkDeleter = new BookmarkCollection();
trans.Add(bookmarkDeleter);
// delete all bookmarks for this user directly from the DB using the following filter.
bookmarkDeleter.DeleteMulti(BookmarkFields.UserID == userID);
// delete all audit data
AuditDataCoreCollection auditDataDeleter = new AuditDataCoreCollection();
// first fetch it, then delete all entities from the collection, as the audit data is in an inheritance hierarchy of TargetPerEntity which can't
// be deleted directly from the db.
trans.Add(auditDataDeleter);
auditDataDeleter.GetMulti(AuditDataCoreFields.UserID == userID);
auditDataDeleter.DeleteMulti();
// set IP bans set by this user to userid 0
IPBanEntity ipbanUpdater = new IPBanEntity();
ipbanUpdater.IPBanSetByUserID = 0;
IPBanCollection ipBans = new IPBanCollection();
trans.Add(ipBans);
ipBans.UpdateMulti(ipbanUpdater, (IPBanFields.IPBanSetByUserID == userID));
// delete threadsubscriptions
ThreadSubscriptionCollection threadSubscriptionsDeleter = new ThreadSubscriptionCollection();
trans.Add(threadSubscriptionsDeleter);
threadSubscriptionsDeleter.DeleteMulti(ThreadSubscriptionFields.UserID == userID);
// remove supportqueuethread claims
SupportQueueThreadCollection supportQueueThreads = new SupportQueueThreadCollection();
trans.Add(supportQueueThreads);
supportQueueThreads.DeleteMulti(SupportQueueThreadFields.ClaimedByUserID == userID);
// set all placed in queue references to userid 0, so the threads stay in the queues.
SupportQueueThreadEntity supportQueueThreadUpdater = new SupportQueueThreadEntity();
supportQueueThreadUpdater.PlacedInQueueByUserID=0;
supportQueueThreads.UpdateMulti(supportQueueThreadUpdater, (SupportQueueThreadFields.PlacedInQueueByUserID == userID));
// now delete the actual user entity
trans.Add(toDelete);
toDelete.Delete();
// all done
trans.Commit();
return true;
}
catch
{
trans.Rollback();
throw;
}
finally
{
trans.Dispose();
}
}
/// <summary>
/// Saves the audit actions for role specified. First removes all present rows for the roleid
/// </summary>
/// <param name="auditActionIDs">Audit action IDs.</param>
/// <param name="roleID">Role ID.</param>
/// <returns>true if the save action succeeded, false otherwise</returns>
public static bool SaveAuditActionsForRole(List<int> auditActionIDs, int roleID)
{
RoleAuditActionCollection roleAuditActions = new RoleAuditActionCollection();
Transaction trans = new Transaction(IsolationLevel.ReadCommitted, "SaveAuditActionsForRole");
// add this collection to the transaction so all actions executed through this collection will be inside the transaction
trans.Add(roleAuditActions);
try
{
// first remove the existing rows for the role
roleAuditActions.DeleteMulti((RoleAuditActionFields.RoleID == roleID));
// THEN add new ones to the same collection.
foreach(int auditActionID in auditActionIDs)
{
RoleAuditActionEntity newRoleAuditAction = new RoleAuditActionEntity();
newRoleAuditAction.AuditActionID = auditActionID;
newRoleAuditAction.RoleID = roleID;
roleAuditActions.Add(newRoleAuditAction);
}
// save all new entities
roleAuditActions.SaveMulti();
// succeeded, commit transaction
trans.Commit();
return true;
}
catch
{
// failed, rollback transaction
trans.Rollback();
throw;
}
finally
{
trans.Dispose();
}
}
/// <summary>
/// Removes the thread with the threadid specified from the queue it's in. A thread can be in a single queue, so we don't need the queueID.
/// </summary>
/// <param name="threadID">The thread ID.</param>
/// <param name="transactionToUse">The transaction currently in progress. Can be null if no transaction is in progress.</param>
public static void RemoveThreadFromQueue(int threadID, Transaction transactionToUse)
{
// delete the SupportQueueThread entity for this thread directly from the db, inside the transaction specified (if applicable)
SupportQueueThreadCollection supportQueueThreads = new SupportQueueThreadCollection();
if(transactionToUse != null)
{
// there's a transaction in progress, simply add it to the transaction
transactionToUse.Add(supportQueueThreads);
}
// delete directly, using a filter on threadid
supportQueueThreads.DeleteMulti((SupportQueueThreadFields.ThreadID == threadID));
// don't commit the current transaction if specified, simply return to caller.
}
/// <summary>
/// Marks the thread as un-done, and add it to the default queue of the forum.
/// </summary>
/// <param name="threadID">Thread ID</param>
/// <returns></returns>
public static bool UnMarkThreadAsDone(int threadID, int userID)
{
// load the entity from the database
ThreadEntity thread = ThreadGuiHelper.GetThread(threadID);
if (thread == null)
{
// not found
return false;
}
thread.MarkedAsDone = false;
ForumEntity forum = new ForumEntity(thread.ForumID);
// Save the thread and add it to the default queue of the forum.
Transaction trans = new Transaction(IsolationLevel.ReadCommitted, "MarkThreadUnDone");
trans.Add(thread);
try
{
thread.Save();
if ((forum.Fields.State == EntityState.Fetched) && (forum.DefaultSupportQueueID.HasValue))
{
// not in a queue, and the forum has a default queue. Add the thread to the queue of the forum
SupportQueueManager.AddThreadToQueue(threadID, forum.DefaultSupportQueueID.Value, userID, trans);
}
trans.Commit();
return true;
}
catch
{
// rollback transaction
trans.Rollback();
throw;
}
finally
{
trans.Dispose();
}
}
/// <summary>
/// Deletes the threads matching the passed in filter, inside the transaction specified.
/// </summary>
/// <param name="threadFilter">The thread filter.</param>
/// <param name="trans">The transaction to use.</param>
private static void DeleteThreads(PredicateExpression threadFilter, Transaction trans)
{
// we've to perform a set of actions in a given order to make sure we're not violating FK constraints in the DB.
// delete messages in thread
MessageManager.DeleteAllMessagesInThreads(threadFilter, trans);
// delete bookmarks (if exists) of the threads to be deleted
BookmarkCollection bookmarks = new BookmarkCollection();
trans.Add(bookmarks);
// use again a fieldcompareset predicate
bookmarks.DeleteMulti(new FieldCompareSetPredicate(BookmarkFields.ThreadID, ThreadFields.ThreadID, SetOperator.In, threadFilter));
// delete audit info related to this thread. Can't be done directly on the db due to the fact the entities are in a TargetPerEntity hierarchy, which
// can't be deleted directly on the db, so we've to fetch the entities first.
AuditDataThreadRelatedCollection threadAuditData = new AuditDataThreadRelatedCollection();
trans.Add(threadAuditData);
// use a fieldcompareset predicate filter, based on the threadFilter.
threadAuditData.GetMulti(new FieldCompareSetPredicate(AuditDataThreadRelatedFields.ThreadID, ThreadFields.ThreadID, SetOperator.In, threadFilter));
threadAuditData.DeleteMulti();
// delete support queue thread entity for this thread (if any)
SupportQueueThreadCollection supportQueueThreads = new SupportQueueThreadCollection();
trans.Add(supportQueueThreads);
// use again a fieldcompareset predicate
supportQueueThreads.DeleteMulti(new FieldCompareSetPredicate(SupportQueueThreadFields.ThreadID, ThreadFields.ThreadID, SetOperator.In, threadFilter));
// delete threadsubscription entities
ThreadSubscriptionCollection threadSubscriptions = new ThreadSubscriptionCollection();
trans.Add(threadSubscriptions);
// use again a fieldcompareset predicate
threadSubscriptions.DeleteMulti(new FieldCompareSetPredicate(ThreadSubscriptionFields.ThreadID, ThreadFields.ThreadID, SetOperator.In, threadFilter));
// delete the threads
ThreadCollection threads = new ThreadCollection();
trans.Add(threads);
// we already have the filter to use, namely the filter passed in.
threads.DeleteMulti(threadFilter);
// don't commit the transaction, that's up to the caller.
}
/// <summary>
/// Deletes the given message from the database and the complete logged history.
/// </summary>
/// <param name="messageID">The ID of the message to delete</param>
/// <returns>True if succeeded, false otherwise</returns>
public static bool DeleteMessage(int messageID)
{
Transaction trans = new Transaction(IsolationLevel.ReadCommitted, "DeleteMessage");
try
{
// formulate a filter so we can re-use the delete routine for all messages in threads matching a filter.
PredicateExpression messageFilter = new PredicateExpression(MessageFields.MessageID == messageID);
// call the routine which is used to delete 1 or more messages and related data from the db.
DeleteMessages(messageFilter, trans);
trans.Commit();
return true;
}
catch(Exception)
{
trans.Rollback();
throw;
}
finally
{
trans.Dispose();
}
}
/// <summary>
/// Deletes the messages matching the messagefilter passed in
/// </summary>
/// <param name="messageFilter">The message filter.</param>
/// <param name="trans">The transaction to use.</param>
private static void DeleteMessages(IPredicate messageFilter, Transaction trans)
{
// first delete all audit info for these message. This isn't done by a batch call directly on the db, as this is a targetperentity hierarchy
// which can't be deleted directly into the database in all cases, so we first fetch the entities to delete.
AuditDataMessageRelatedCollection messageAudits = new AuditDataMessageRelatedCollection();
trans.Add(messageAudits);
// use a fieldcompareset predicate to get the auditdata related to this message and then delete all of them using the collection.
messageAudits.GetMulti(new FieldCompareSetPredicate(AuditDataMessageRelatedFields.MessageID, MessageFields.MessageID, SetOperator.In, messageFilter));
messageAudits.DeleteMulti();
// delete all attachments for this message. This can be done directly onto the db.
AttachmentCollection attachments = new AttachmentCollection();
trans.Add(attachments);
// delete these directly from the db, using a fieldcompareset predicate
attachments.DeleteMulti(new FieldCompareSetPredicate(AttachmentFields.MessageID, MessageFields.MessageID, SetOperator.In, messageFilter));
// delete the message/messages
MessageCollection messages = new MessageCollection();
trans.Add(messages);
// use the passed in filter to remove the messages
messages.DeleteMulti(messageFilter);
// don't commit the transaction, leave that to the caller.
}
/// <summary>
/// Updates the user/forum/thread statistics after a message insert. Also makes sure if the thread isn't in a queue and the forum has a default support
/// queue that the thread is added to that queue
/// </summary>
/// <param name="threadID">The thread ID.</param>
/// <param name="userID">The user ID.</param>
/// <param name="transactionToUse">The transaction to use.</param>
/// <param name="postingDate">The posting date.</param>
/// <param name="addToQueueIfRequired">if set to true, the thread will be added to the default queue of the forum the thread is in, if the forum
/// has a default support queue and the thread isn't already in a queue.</param>
/// <remarks>Leaves the passed in transaction open, so it doesn't commit/rollback, it just performs a set of actions inside the
/// passed in transaction.</remarks>
internal static void UpdateStatisticsAfterMessageInsert(int threadID, int userID, Transaction transactionToUse, DateTime postingDate, bool addToQueueIfRequired, bool subscribeToThread)
{
// user statistics
UserEntity userUpdater = new UserEntity();
// set the amountofpostings field to an expression so it will be increased with 1.
userUpdater.Fields[(int)UserFieldIndex.AmountOfPostings].ExpressionToApply = (UserFields.AmountOfPostings + 1);
UserCollection users = new UserCollection();
transactionToUse.Add(users);
users.UpdateMulti(userUpdater, (UserFields.UserID == userID)); // update directly on the DB.
// thread statistics
ThreadEntity threadUpdater = new ThreadEntity();
threadUpdater.ThreadLastPostingDate = postingDate;
threadUpdater.MarkedAsDone = false;
ThreadCollection threads = new ThreadCollection();
transactionToUse.Add(threads);
threads.UpdateMulti(threadUpdater, (ThreadFields.ThreadID == threadID));
// forum statistics. Load the forum from the DB, as we need it later on. Use a fieldcompareset predicate to fetch the forum as we don't know the
// forumID as we haven't fetched the thread
ForumCollection forums = new ForumCollection();
transactionToUse.Add(forums);
// use a fieldcompare set predicate to select the forumid based on the thread. This filter is equal to
// WHERE ForumID == (SELECT ForumID FROM Thread WHERE ThreadID=@ThreadID)
var forumFilter = new FieldCompareSetPredicate(
ForumFields.ForumID, ThreadFields.ForumID, SetOperator.Equal, (ThreadFields.ThreadID == threadID));
forums.GetMulti(forumFilter);
ForumEntity containingForum = null;
if(forums.Count>0)
{
// forum found. There's just one.
containingForum = forums[0];
containingForum.ForumLastPostingDate = postingDate;
// save the forum. Just save the collection
forums.SaveMulti();
}
if(addToQueueIfRequired)
{
// If the thread involved isn't in a queue, place it in the default queue of the forum (if applicable)
SupportQueueEntity containingQueue = SupportQueueGuiHelper.GetQueueOfThread(threadID, transactionToUse);
if((containingQueue == null) && (containingForum != null) && (containingForum.DefaultSupportQueueID.HasValue))
{
// not in a queue, and the forum has a default queue. Add the thread to the queue of the forum
SupportQueueManager.AddThreadToQueue(threadID, containingForum.DefaultSupportQueueID.Value, userID, transactionToUse);
}
}
//subscribe to thread if indicated
if(subscribeToThread)
{
UserManager.AddThreadToSubscriptions(threadID, userID, transactionToUse);
}
}
/// <summary>
/// Deletes all messages in threads which match the passed in filter.
/// </summary>
/// <param name="threadFilter">The thread filter.</param>
/// <param name="trans">The transaction to use.</param>
internal static void DeleteAllMessagesInThreads(PredicateExpression threadFilter, Transaction trans)
{
// fabricate the messagefilter, based on the passed in filter on threads. We do this by creating a FieldCompareSetPredicate:
// WHERE Message.ThreadID IN (SELECT ThreadID FROM Thread WHERE threadFilter)
var messageFilter = MessageFields.ThreadID.In(new QueryFactory().Create()
.Select(ThreadFields.ThreadID)
.Where(threadFilter));
DeleteMessages(messageFilter, trans);
}
/// <summary>
/// Saves the given set of actionrights as the set of forum action rights for the given forum / role combination.
/// It first removes all current action rights for that combination.
/// </summary>
/// <param name="actionRightIDs">List of actionrights to set of this role</param>
/// <param name="roleID">Role to use</param>
/// <param name="forumID">Forum to use</param>
/// <returns>true if succeeded, false otherwise</returns>
public static bool SaveForumActionRightsForForumRole(List<int> actionRightIDs, int roleID, int forumID)
{
ForumRoleForumActionRightCollection forumRightsPerRole = new ForumRoleForumActionRightCollection();
Transaction trans = new Transaction(IsolationLevel.ReadCommitted, "SaveForumActionRights");
// add this collection to the transaction so all actions executed through this collection will be inside the transaction
trans.Add(forumRightsPerRole);
try
{
// first remove the existing rows for the role
forumRightsPerRole.DeleteMulti((ForumRoleForumActionRightFields.RoleID == roleID).And(ForumRoleForumActionRightFields.ForumID == forumID));
// THEN add new ones
foreach(int actionRightID in actionRightIDs)
{
ForumRoleForumActionRightEntity newForumRightPerRole = new ForumRoleForumActionRightEntity();
newForumRightPerRole.ActionRightID = actionRightID;
newForumRightPerRole.ForumID = forumID;
newForumRightPerRole.RoleID = roleID;
forumRightsPerRole.Add(newForumRightPerRole);
}
// save the new entities
forumRightsPerRole.SaveMulti();
// all done, commit transaction
trans.Commit();
return true;
}
catch
{
// failed, rollback transaction
trans.Rollback();
throw;
}
finally
{
trans.Dispose();
}
}
/// <summary>
/// Deletes all threads in the specified forum.
/// </summary>
/// <param name="forumFilter">The forum filter.</param>
/// <param name="trans">The transaction to use.</param>
internal static void DeleteAllThreadsInForum(int forumID, Transaction trans)
{
// fabricate the threadfilter, based on the passed in forumId. We do this by creating a FieldCompareValuePredicate:
// WHERE Thread.ForumID = forumID
PredicateExpression threadFilter = new PredicateExpression();
threadFilter.Add(ThreadFields.ForumID == forumID);
DeleteThreads(threadFilter, trans);
}
/// <summary>
/// Gets the support queue of the thread with the threadID specified.
/// </summary>
/// <param name="threadID">The thread ID.</param>
/// <param name="trans">The transaction currently in progress. Can be null if no transaction is in progress.</param>
/// <returns>
/// The requested supportqueue entity, or null if the thread isn't in a support queue.
/// </returns>
public static SupportQueueEntity GetQueueOfThread(int threadID, Transaction trans)
{
// the relation supportqueue - thread is stored in a SupportQueueThread entity. Use that entity as a filter for the support queue. If
// that entity doesn't exist, the thread isn't in a supportqueue.
var qf = new QueryFactory();
var q = qf.SupportQueueThread
.From(QueryTarget.InnerJoin(qf.SupportQueue).On(SupportQueueThreadFields.QueueID == SupportQueueFields.QueueID))
.Where(SupportQueueThreadFields.ThreadID == threadID);
// use a supportqueue collection to fetch the support queue, which will contain 0 or 1 entities after the fetch
SupportQueueCollection supportQueues = new SupportQueueCollection();
// if a transaction has been specified, we've to add the collection to the transaction so the fetch takes place inside the same transaction so no
// deadlocks occur on sqlserver
if(trans != null)
{
trans.Add(supportQueues);
}
supportQueues.GetMulti(q);
if(supportQueues.Count > 0)
{
// in a queue, return the instance
return supportQueues[0];
}
else
{
// not in a queue, return null
return null;
}
}
/// <summary>
/// Inserts a new message in thread given. All exceptions are passed upwards, caller has full control over transaction.
/// </summary>
/// <param name="threadID">Thread wherein the new message will be placed</param>
/// <param name="userID">User who posted this message</param>
/// <param name="messageText">Message text</param>
/// <param name="messageAsHTML">Message text as HTML</param>
/// <param name="userIDIPAddress">IP address of user calling this method</param>
/// <param name="messageAsXML">Message text as XML, which is the result of the parse action on MessageText.</param>
/// <param name="transactionToUse">the open transaction to use for saving this message.</param>
/// <param name="postingDate">The posting date.</param>
/// <returns>new messageid</returns>
private static int InsertNewMessage(int threadID, int userID, string messageText, string messageAsHTML, string userIDIPAddress,
string messageAsXML, Transaction transactionToUse, DateTime postingDate)
{
MessageEntity message = new MessageEntity();
message.MessageText = messageText;
message.MessageTextAsHTML = messageAsHTML;
message.PostedByUserID = userID;
message.PostingDate = postingDate;
message.ThreadID = threadID;
message.PostedFromIP = userIDIPAddress;
message.MessageTextAsXml = messageAsXML;
transactionToUse.Add(message);
bool result = message.Save();
if(result)
{
return message.MessageID;
}
else
{
return 0;
}
}
/// <summary>
/// Creates a new thread in the given forum and places the passed in message as the first message in the thread.
/// Caller should validate input parameters.
/// </summary>
/// <param name="forumID">Forum wherein the new thread will be placed</param>
/// <param name="userID">User who started this thread</param>
/// <param name="subject">Subject of the thread</param>
/// <param name="messageText">First message of the thread</param>
/// <param name="messageAsHTML">Message text as HTML</param>
/// <param name="isSticky">Flag if the thread is sticky / pinned (true) or not (false)</param>
/// <param name="userIDIPAddress">IP address of user calling this method</param>
/// <param name="defaultSupportQueueID">The ID of the default support queue for this forum. If not null, the thread created will be
/// added to the support queue with the ID specified.</param>
/// <param name="messageID">The message ID of the new message, which is the start message in the thread.</param>
/// <returns>ThreadID if succeeded, 0 if not.</returns>
public static int CreateNewThreadInForum(int forumID, int userID, string subject, string messageText, string messageAsHTML, bool isSticky,
string userIDIPAddress, int? defaultSupportQueueID, bool subscribeToThread, out int messageID)
{
Transaction trans = new Transaction(IsolationLevel.ReadCommitted, "NewThread");
try
{
DateTime postDate = DateTime.Now;
ThreadEntity newThread = new ThreadEntity();
newThread.ForumID = forumID;
newThread.IsClosed = false;
newThread.IsSticky = isSticky;
newThread.StartedByUserID = userID;
newThread.Subject = subject;
newThread.ThreadLastPostingDate = postDate;
if(defaultSupportQueueID.HasValue)
{
// a support queue has been specified as the default support queue for this forum. Add the new thread to this support queue.
SupportQueueThreadEntity supportQueueThread = new SupportQueueThreadEntity();
supportQueueThread.QueueID = defaultSupportQueueID.Value;
supportQueueThread.PlacedInQueueByUserID = userID;
supportQueueThread.PlacedInQueueOn = DateTime.Now;
// assign the Thread property to the newly created thread entity, so this supportqueuethreadentity will be part of the graph
// of objects which will be saved.
supportQueueThread.Thread = newThread;
}
DateTime postingDate = DateTime.Now;
MessageEntity newMessage = new MessageEntity();
newMessage.MessageText = messageText;
newMessage.MessageTextAsHTML = messageAsHTML;
newMessage.PostedByUserID = userID;
newMessage.PostingDate = postingDate;
newMessage.PostedFromIP = userIDIPAddress;
newMessage.Thread = newThread;
// add the newMessage entity to the transaction object. All entities saved recursively will be added automatically
trans.Add(newMessage);
// save the complete graph
newMessage.Save(true);
messageID = newMessage.MessageID;
int threadID = newMessage.ThreadID;
// update thread statistics, this is the task for the message manager, and we pass the transaction object so the actions will run in
// the same transaction.
MessageManager.UpdateStatisticsAfterMessageInsert(threadID, userID, trans, postingDate, false, subscribeToThread);
trans.Commit();
return newThread.ThreadID;
}
catch(Exception)
{
trans.Rollback();
throw;
}
finally
{
trans.Dispose();
}
}
/// <summary>
/// Deletes the support queue with the ID specified.
/// </summary>
/// <param name="queueID">The queue ID of the queue to delete.</param>
/// <returns>true if succeeded, false otherwise</returns>
/// <remarks>All threads in the queue are automatically de-queued and not in a queue anymore. The Default support queue
/// for forums which have this queue as the default support queue is reset to null.</remarks>
public static bool DeleteSupportQueue(int queueID)
{
// we'll do several actions in one atomic transaction, so start a transaction first.
Transaction trans = new Transaction(IsolationLevel.ReadCommitted, "DeleteSupportQ");
try
{
// first reset all the FKs in Forum to NULL if they point to this queue.
ForumEntity forumUpdater = new ForumEntity();
// set the field to NULL. This is a nullable field, so we can just set the field to 'null', thanks to nullable types.
forumUpdater.DefaultSupportQueueID = null;
// update the entities directly in the db, use a forum collection for that
ForumCollection forums = new ForumCollection();
trans.Add(forums);
// specify a filter that only the forums which have this queue as the default queue are updated and have their FK field set to NULL.
forums.UpdateMulti(forumUpdater, (ForumFields.DefaultSupportQueueID == queueID));
// delete all SupportQueueThread entities which refer to this queue. This will make all threads which are in this queue become queue-less.
SupportQueueThreadCollection supportQueueThreads = new SupportQueueThreadCollection();
trans.Add(supportQueueThreads);
// delete them directly from the db.
supportQueueThreads.DeleteMulti((SupportQueueThreadFields.QueueID == queueID));
// it's now time to delete the actual supportqueue entity.
SupportQueueCollection supportQueues = new SupportQueueCollection();
trans.Add(supportQueues);
// delete it directly from the db.
int numberOfQueuesDeleted = supportQueues.DeleteMulti((SupportQueueFields.QueueID == queueID));
// done so commit the transaction.
trans.Commit();
return (numberOfQueuesDeleted > 0);
}
catch
{
// first roll back the transaction
trans.Rollback();
// then bubble up the exception
throw;
}
finally
{
trans.Dispose();
}
}
/// <summary>
/// Deletes the given forum from the system, including <b>all</b> threads in this forum and messages in those threads.
/// </summary>
/// <param name="forumID">Forum ID.</param>
/// <returns>True if succeeded, false otherwise</returns>
public static bool DeleteForum(int forumID)
{
// first all threads in this forum have to be removed, then this forum should be removed. Do this in one transaction.
Transaction trans = new Transaction(IsolationLevel.ReadCommitted, "DeleteForum");
try
{
PredicateExpression forumFilter = new PredicateExpression();
forumFilter.Add((ForumFields.ForumID == forumID));
// remove all threads in this forum
ThreadManager.DeleteAllThreadsInForum(forumID, trans);
// remove all ForumRoleForumActionRight entities for this forum
ForumRoleForumActionRightCollection forumRoleActionRights = new ForumRoleForumActionRightCollection();
trans.Add(forumRoleActionRights);
forumRoleActionRights.DeleteMulti(ForumRoleForumActionRightFields.ForumID == forumID);
// remove the forum entity. do this by executing a direct delete statement on the database
ForumCollection forums = new ForumCollection();
trans.Add(forums);
forums.DeleteMulti(forumFilter);
trans.Commit();
return true;
}
catch
{
// exception occured, rollback
trans.Rollback();
throw;
}
finally
{
trans.Dispose();
}
}
/// <summary>
/// Subscribes the user specified to the thread specified for notifications. A transaction can be specified to save the information inside the
/// transaction specified. If the user is already subscribed to this thread, nothing is done
/// </summary>
/// <param name="threadID">The thread ID.</param>
/// <param name="userID">The user ID.</param>
/// <param name="transactionToUse">The transaction to use. If no transaction is specified, no transaction is created</param>
/// <returns></returns>
public static bool AddThreadToSubscriptions(int threadID, int userID, Transaction transactionToUse)
{
// check if this user is already subscribed to this thread. If not, add a new subscription.
ThreadSubscriptionEntity subscription = ThreadGuiHelper.GetThreadSubscription(threadID, userID, transactionToUse);
if(subscription == null)
{
// user isn't yet subscribed, add the subscription
subscription = new ThreadSubscriptionEntity();
subscription.UserID = userID;
subscription.ThreadID = threadID;
if(transactionToUse != null)
{
transactionToUse.Add(subscription);
}
return subscription.Save();
}
// already subscribed, no-op.
return true;
}
/// <summary>
/// Deletes the given role from the system.
/// </summary>
/// <param name="roleID">ID of role to delete</param>
/// <returns>true if succeeded, false otherwise</returns>
public static bool DeleteRole(int roleID)
{
RoleEntity toDelete = SecurityGuiHelper.GetRole(roleID);
if(toDelete == null)
{
// not found
return false;
}
Transaction trans = new Transaction(IsolationLevel.ReadCommitted, "DeleteRole");
try
{
// remove the role - forum - action right entities
ForumRoleForumActionRightCollection forumRoleActionRights = new ForumRoleForumActionRightCollection();
trans.Add(forumRoleActionRights);
forumRoleActionRights.DeleteMulti(ForumRoleForumActionRightFields.RoleID == roleID);
// Remove role-audit action entities
RoleAuditActionCollection roleAuditActions = new RoleAuditActionCollection();
trans.Add(roleAuditActions);
roleAuditActions.DeleteMulti(RoleAuditActionFields.RoleID == roleID);
// remove Role - systemright entities
RoleSystemActionRightCollection roleSystemRights = new RoleSystemActionRightCollection();
trans.Add(roleSystemRights);
roleSystemRights.DeleteMulti(RoleSystemActionRightFields.RoleID == roleID);
// remove Role - user entities
RoleUserCollection roleUsers = new RoleUserCollection();
trans.Add(roleUsers);
roleUsers.DeleteMulti(RoleUserFields.RoleID == roleID);
// delete the actual role
trans.Add(toDelete);
toDelete.Delete();
trans.Commit();
return true;
}
catch
{
// error occured, rollback
trans.Rollback();
throw;
}
finally
{
trans.Dispose();
}
}