/// <summary>
/// Gets the user list.
/// </summary>
/// <returns></returns>
/// <remarks>Documented by Dev05, 2009-01-16</remarks>
public IList <UserStruct> GetUserList()
{
IList <UserStruct> users = Parent.CurrentUser.Cache[ObjectLifetimeIdentifier.GetIdentifier(CacheObject.UserList, 0)] as IList <UserStruct>;
if (users != null)
{
return(users);
}
SqlCeCommand cmd = MSSQLCEConn.CreateCommand(Parent.CurrentUser);
cmd.CommandText = "SELECT * FROM \"UserProfiles\";";
SqlCeDataReader reader = MSSQLCEConn.ExecuteReader(cmd);
users = new List <UserStruct>();
users.Add(new UserStruct(Resources.CREATE_NEW_USER, UserAuthenticationTyp.ListAuthentication));
while (reader.Read())
{
UserStruct user = new UserStruct(reader["username"].ToString(), reader["local_directory_id"].ToString(), UserAuthenticationTyp.ListAuthentication);
users.Add(user);
}
reader.Close();
Parent.CurrentUser.Cache[ObjectLifetimeIdentifier.Create(CacheObject.UserList, 0, new TimeSpan(0, 0, 30))] = users;
return(users);
}
/// <summary>
/// Gets the chapter ids.
/// </summary>
/// <param name="lmid">The id of the learning module.</param>
/// <returns></returns>
/// <remarks>Documented by Dev02, 2008-08-05</remarks>
/// <remarks>Documented by Dev08, 2009-01-12</remarks>
public IList <int> GetChapterIds(int lmid)
{
IList <int> chaptersCache = parent.CurrentUser.Cache[ObjectLifetimeIdentifier.GetIdentifier(CacheObject.ChaptersList, lmid)] as IList <int>;
if (chaptersCache != null)
{
return(chaptersCache);
}
IList <int> list = new List <int>();
using (SqlCeCommand cmd = MSSQLCEConn.CreateCommand(parent.CurrentUser))
{
cmd.CommandText = "SELECT id FROM \"Chapters\" WHERE lm_id=@lmid ORDER BY position ASC";
cmd.Parameters.Add("@lmid", lmid);
SqlCeDataReader reader = MSSQLCEConn.ExecuteReader(cmd);
while (reader.Read())
{
list.Add(Convert.ToInt32(reader["id"]));
}
reader.Close();
}
parent.CurrentUser.Cache[ObjectLifetimeIdentifier.Create(CacheObject.ChaptersList, lmid)] = list;
return(list);
}
/// <summary>
/// Gets a single property value for a media object.
/// </summary>
/// <param name="id">The id.</param>
/// <param name="property">The property.</param>
/// <returns></returns>
/// <remarks>Documented by Dev02, 2008-08-07</remarks>
/// <remarks>Documented by Dev03, 2009-01-13</remarks>
public string GetPropertyValue(int id, MLifter.DAL.Interfaces.MediaProperty property)
{
Dictionary <MediaProperty, string> properties = Parent.CurrentUser.Cache[ObjectLifetimeIdentifier.GetIdentifier(CacheObject.MediaProperties, id)] as Dictionary <MediaProperty, string>;
if (properties != null && properties.ContainsKey(property))
{
return(properties[property]);
}
SqlCeCommand cmd = MSSQLCEConn.CreateCommand(Parent.CurrentUser);
cmd.CommandText = "SELECT property, value FROM MediaProperties WHERE media_id=@id";
cmd.Parameters.Add("@id", id);
SqlCeDataReader reader = MSSQLCEConn.ExecuteReader(cmd);
properties = new Dictionary <MediaProperty, string>();
while (reader.Read())
{
properties[(MediaProperty)Enum.Parse(typeof(MediaProperty), reader["property"].ToString())] = reader["value"].ToString();
}
reader.Close();
Parent.CurrentUser.Cache[ObjectLifetimeIdentifier.Create(CacheObject.MediaProperties, id, new TimeSpan(1, 0, 0))] = properties;
if (properties.ContainsKey(property))
{
return(properties[property]);
}
else
{
return(null);
}
}
/// <summary>
/// Sets a single property value for a media object.
/// </summary>
/// <param name="id">The id.</param>
/// <param name="property">The property.</param>
/// <param name="value">The value.</param>
/// <remarks>Documented by Dev02, 2008-08-07</remarks>
/// <remarks>Documented by Dev03, 2009-01-13</remarks>
public void SetPropertyValue(int id, MLifter.DAL.Interfaces.MediaProperty property, string value)
{
SqlCeCommand cmd = MSSQLCEConn.CreateCommand(Parent.CurrentUser);
SqlCeTransaction tran = cmd.Connection.BeginTransaction();
if (GetPropertyValue(id, property) == null)
{
cmd.CommandText = "INSERT INTO MediaProperties (media_id, property, value) VALUES (@media_id, @property, @value);";
}
else
{
cmd.CommandText = "UPDATE MediaProperties SET value=@value WHERE media_id=@media_id AND property=@property;";
}
Dictionary <MediaProperty, string> properties = Parent.CurrentUser.Cache[ObjectLifetimeIdentifier.GetIdentifier(CacheObject.MediaProperties, id)] as Dictionary <MediaProperty, string>;
if (properties == null)
{
properties = new Dictionary <MediaProperty, string>();
}
properties[property] = value;
Parent.CurrentUser.Cache[ObjectLifetimeIdentifier.Create(CacheObject.MediaProperties, id, new TimeSpan(1, 0, 0))] = properties;
cmd.Parameters.Add("@media_id", id);
cmd.Parameters.Add("@property", property.ToString());
cmd.Parameters.Add("@value", value);
MSSQLCEConn.ExecuteNonQuery(cmd);
tran.Commit();
}
/// <summary>
/// Gets the settings.
/// </summary>
/// <param name="id">The id.</param>
/// <returns></returns>
/// <remarks>Documented by Dev05, 2009-01-15</remarks>
public ISettings GetSettings(int id)
{
int?chapterSettingsId = Parent.CurrentUser.Cache[ObjectLifetimeIdentifier.GetIdentifier(CacheObject.ChapterSetting, id)] as int?;
if (chapterSettingsId.HasValue)
{
return(new DbSettings(chapterSettingsId.Value, false, Parent));
}
using (SqlCeCommand cmd = MSSQLCEConn.CreateCommand(Parent.CurrentUser))
{
cmd.CommandText = "SELECT settings_id FROM \"Chapters\" WHERE id=@id";
cmd.Parameters.Add("@id", id);
int?sid = MSSQLCEConn.ExecuteScalar <int>(cmd);
if (sid.HasValue)
{
Parent.CurrentUser.Cache[ObjectLifetimeIdentifier.Create(CacheObject.ChapterSetting, id)] = sid;
return(new DbSettings(sid.Value, false, Parent));
}
else
{
return(null);
}
}
}
/// <summary>
/// Sets the properties for a media object.
/// </summary>
/// <param name="id">The id of the media object.</param>
/// <param name="properties">The properties for the media object.</param>
/// <remarks>Documented by Dev03, 2008-08-05</remarks>
/// <remarks>Documented by Dev03, 2009-01-13</remarks>
public void SetProperties(int id, Dictionary <MLifter.DAL.Interfaces.MediaProperty, string> properties)
{
SqlCeCommand cmd1 = MSSQLCEConn.CreateCommand(Parent.CurrentUser);
SqlCeTransaction tran = cmd1.Connection.BeginTransaction();
cmd1.CommandText = "DELETE FROM MediaProperties WHERE media_id=@id;";
cmd1.Parameters.Add("@id", id);
MSSQLCEConn.ExecuteNonQuery(cmd1);
SqlCeCommand cmd = MSSQLCEConn.CreateCommand(Parent.CurrentUser);
cmd.CommandText = "INSERT INTO MediaProperties (media_id, property, value) VALUES (@media_id, @property, @value);";
cmd.Parameters.Add("@media_id", SqlDbType.Int, 4);
cmd.Parameters.Add("@property", SqlDbType.NVarChar, 100);
cmd.Parameters.Add("@value", SqlDbType.NVarChar, 100);
foreach (KeyValuePair <MediaProperty, string> item in properties)
{
cmd.Parameters["@media_id"].Value = id;
cmd.Parameters["@property"].Value = item.Key.ToString();
cmd.Parameters["@value"].Value = item.Value;
MSSQLCEConn.ExecuteNonQuery(cmd);
}
tran.Commit();
}
/// <summary>
/// Gets the size of the current.
/// </summary>
/// <param name="id">The id.</param>
/// <returns></returns>
/// <remarks>Documented by Dev03, 2009-01-09</remarks>
/// <remarks>Documented by Dev08, 2009-01-09</remarks>
public int GetCurrentSize(int id)
{
BoxSizes?sizes = Parent.CurrentUser.Cache[ObjectLifetimeIdentifier.GetIdentifier(CacheObject.CurrentBoxSizes, Parent.CurrentUser.ConnectionString.LmId)] as BoxSizes?;
if (sizes.HasValue)
{
return(sizes.Value.Sizes[id]);
}
using (SqlCeCommand cmd = MSSQLCEConn.CreateCommand(Parent.CurrentUser))
{
sizes = new BoxSizes(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0); //filled with temp/default values
cmd.CommandText = "SELECT CS.box, count(*) AS count FROM UserCardState CS INNER JOIN Cards C ON CS.cards_id = C.id WHERE CS.active=1 and CS.user_id=@user_id and C.lm_id=@lm_id GROUP BY CS.box";
cmd.Parameters.Add("@user_id", Parent.CurrentUser.Id);
cmd.Parameters.Add("@lm_id", Parent.CurrentUser.ConnectionString.LmId);
SqlCeDataReader reader = MSSQLCEConn.ExecuteReader(cmd);
while (reader.Read())
{
sizes.Value.Sizes[Convert.ToInt32(reader["box"])] = Convert.ToInt32(reader["count"]);
}
reader.Close();
Parent.CurrentUser.Cache[ObjectLifetimeIdentifier.Create(CacheObject.CurrentBoxSizes, Parent.CurrentUser.ConnectionString.LmId)] = sizes.Value;
return(sizes.Value.Sizes[id]);
}
}
/// <summary>
/// Copies the statistics.
/// </summary>
/// <param name="lmId">The lm id.</param>
/// <param name="statistic">The statistic.</param>
/// <remarks>Documented by Dev08, 2009-02-09</remarks>
public void CopyStatistics(int lmId, IStatistic statistic)
{
if (statistic.StartTimestamp == null || statistic.EndTimestamp == null) //do not save invalid sessions
{
return;
}
SqlCeCommand cmd = MSSQLCEConn.CreateCommand(parent.CurrentUser);
cmd.CommandText = "INSERT INTO LearningSessions(user_id, lm_id, starttime, endtime, sum_right, sum_wrong, " +
"pool_content, box1_content, box2_content, box3_content, box4_content, box5_content, box6_content, box7_content, box8_content, box9_content, box10_content)" +
"VALUES(@userid, @lmid, @starttime, @endtime, @sumright, @sumwrong, @pool, @b1, @b2, @b3, @b4, @b5, @b6, @b7, @b8, @b9, @b10)";
cmd.Parameters.Add("@userid", parent.CurrentUser.Id);
cmd.Parameters.Add("@lmid", lmId);
cmd.Parameters.Add("@starttime", statistic.StartTimestamp);
cmd.Parameters.Add("@endtime", statistic.EndTimestamp);
cmd.Parameters.Add("@sumright", statistic.Right);
cmd.Parameters.Add("@sumwrong", statistic.Wrong);
int counter = 0;
foreach (int box in statistic.Boxes)
{
++counter;
cmd.Parameters.Add("@b" + counter.ToString(), box);
}
cmd.Parameters.Add("@pool", parent.GetParentDictionary().Boxes.Box[0].MaximalSize); //pool max size => cards in pools
MSSQLCEConn.ExecuteNonQuery(cmd);
}
/// <summary>
/// Gets the size.
/// </summary>
/// <param name="id">The id.</param>
/// <returns></returns>
/// <remarks>Documented by Dev03, 2009-01-09</remarks>
public int GetSize(int id)
{
BoxSizes?sizes = Parent.CurrentUser.Cache[ObjectLifetimeIdentifier.GetIdentifier(CacheObject.BoxSizes, Parent.CurrentUser.ConnectionString.LmId)] as BoxSizes?;
if (sizes.HasValue)
{
return(sizes.Value.Sizes[id]);
}
using (SqlCeCommand cmd = MSSQLCEConn.CreateCommand(Parent.CurrentUser))
{
sizes = new BoxSizes(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
cmd.CommandText = @"SELECT UserCardState.box AS box, count(*) AS count FROM UserCardState, Chapters_Cards
WHERE UserCardState.active=1 and
Chapters_Cards.cards_id=UserCardState.cards_id and UserCardState.user_id=@user_id and
Chapters_Cards.chapters_id IN (
SELECT chapters_id FROM SelectedLearnChapters INNER JOIN UserProfilesLearningModulesSettings
ON SelectedLearnChapters.settings_id=UserProfilesLearningModulesSettings.settings_id
WHERE UserProfilesLearningModulesSettings.user_id=@user_id and UserProfilesLearningModulesSettings.lm_id=@lm_id
) GROUP BY UserCardState.box" ;
cmd.Parameters.Add("@user_id", Parent.CurrentUser.Id);
cmd.Parameters.Add("@lm_id", Parent.CurrentUser.ConnectionString.LmId);
SqlCeDataReader reader = MSSQLCEConn.ExecuteReader(cmd);
while (reader.Read())
{
sizes.Value.Sizes[Convert.ToInt32(reader["box"])] = Convert.ToInt32(reader["count"]);
}
reader.Close();
Parent.CurrentUser.Cache[ObjectLifetimeIdentifier.Create(CacheObject.BoxSizes, Parent.CurrentUser.ConnectionString.LmId, cacheLifeSpan)] = sizes.Value;
return(sizes.Value.Sizes[id]);
}
}
/// <summary>
/// Gets the size of the default.
/// </summary>
/// <param name="id">The id.</param>
/// <returns></returns>
/// <remarks>Documented by Dev03, 2009-01-09</remarks>
public int GetDefaultSize(int id)
{
BoxSizes?sizes = Parent.CurrentUser.Cache[ObjectLifetimeIdentifier.GetIdentifier(CacheObject.DefaultBoxSizes, Parent.CurrentUser.ConnectionString.LmId)] as BoxSizes?;
if (sizes.HasValue)
{
return(sizes.Value.Sizes[id]);
}
using (SqlCeCommand cmd = MSSQLCEConn.CreateCommand(Parent.CurrentUser))
{
cmd.CommandText = "SELECT Boxes.* FROM Boxes INNER JOIN Settings ON Boxes.id = Settings.boxes INNER JOIN LearningModules ON Settings.id = LearningModules.default_settings_id WHERE LearningModules.id = @lm_id";
cmd.Parameters.Add("@lm_id", Parent.CurrentUser.ConnectionString.LmId);
SqlCeDataReader reader = MSSQLCEConn.ExecuteReader(cmd);
reader.Read();
sizes = new BoxSizes(int.MaxValue,
Convert.ToInt32(reader["box1_size"]),
Convert.ToInt32(reader["box2_size"]),
Convert.ToInt32(reader["box3_size"]),
Convert.ToInt32(reader["box4_size"]),
Convert.ToInt32(reader["box5_size"]),
Convert.ToInt32(reader["box6_size"]),
Convert.ToInt32(reader["box7_size"]),
Convert.ToInt32(reader["box8_size"]),
Convert.ToInt32(reader["box9_size"]),
int.MaxValue);
reader.Close();
Parent.CurrentUser.Cache[ObjectLifetimeIdentifier.Create(CacheObject.DefaultBoxSizes, Parent.CurrentUser.ConnectionString.LmId)] = sizes.Value;
return(sizes.Value.Sizes[id]);
}
}
public List <ICard> GetCards(int id)
{
List <ICard> cardsCache = Parent.CurrentUser.Cache[ObjectLifetimeIdentifier.GetIdentifier(CacheObject.CardsList, id)] as List <ICard>;
if (cardsCache != null)
{
return(cardsCache);
}
using (SqlCeCommand cmd = MSSQLCEConn.CreateCommand(Parent.CurrentUser))
{
cmd.CommandText = "SELECT cards_id FROM \"LearningModules_Cards\" WHERE lm_id=@id";
cmd.Parameters.Add("@id", id);
SqlCeDataReader reader;
try { reader = MSSQLCEConn.ExecuteReader(cmd); }
catch { throw new IdAccessException(id); }
List <ICard> cards = new List <ICard>();
while (reader.Read())
{
cards.Add(new DbCard(Convert.ToInt32(reader["cards_id"]), false, Parent));
}
reader.Close();
Parent.CurrentUser.Cache[ObjectLifetimeIdentifier.Create(CacheObject.CardsList, id)] = cards;
return(cards);
}
}
public void RecalculateBoxSizes(int sessionId)
{
SqlCeCommand cmd = MSSQLCEConn.CreateCommand(Parent.CurrentUser);
cmd.CommandText = "UPDATE LearningSessions SET pool_content=@pool, box1_content=@b1, box2_content=@b2, box3_content=@b3, " +
"box4_content=@b4, box5_content=@b5, box6_content=@b6, box7_content=@b7, box8_content=@b8, box9_content=@b9, box10_content=@b10 WHERE id=@sid AND user_id=@uid AND lm_id=@lmid";
cmd.Parameters.Add("sid", sessionId);
cmd.Parameters.Add("@uid", Parent.CurrentUser.Id);
cmd.Parameters.Add("@lmid", Parent.GetParentDictionary().Id);
int counter = 0;
int cardsInBoxes = 0;
BoxSizes boxContent = GetCurrentBoxContent();
foreach (int box in boxContent.Sizes)
{
if (counter == 0)
{
cmd.Parameters.Add("@pool", box);
++counter;
continue;
}
cmd.Parameters.Add("@b" + Convert.ToString(counter++), box);
cardsInBoxes += box;
}
MSSQLCEConn.ExecuteNonQuery(cmd);
}
/// <summary>
/// Gets the learn sessions.
/// </summary>
/// <param name="lmId">The lm id.</param>
/// <returns></returns>
/// <remarks>Documented by Dev08, 2009-01-13</remarks>
public List <int> GetLearnSessions(int lmId)
{
object learnSessionsCache = parent.CurrentUser.Cache[ObjectLifetimeIdentifier.GetIdentifier(CacheObject.StatisticsLearnSessions, lmId)];
MsSqlCeStatisticConnector c = MsSqlCeStatisticConnector.GetInstance(parent);
//The data of GetLearnSession can be cached until a new session was created.
if (runningSessionCopy == c.RunningSession && learnSessionsCache != null)
{
return(learnSessionsCache as List <int>);
}
//if cache is empty or the RunningSession has changed...
SqlCeCommand cmd = MSSQLCEConn.CreateCommand(parent.CurrentUser);
cmd.CommandText = "SELECT id FROM \"LearningSessions\" WHERE lm_id = @lmId AND user_id=@uid ORDER BY endtime ASC";
cmd.Parameters.Add("@lmId", lmId);
cmd.Parameters.Add("@uid", parent.CurrentUser.Id);
List <int> output = new List <int>();
SqlCeDataReader reader = MSSQLCEConn.ExecuteReader(cmd);
while (reader.Read())
{
object id = reader["id"];
int id_converted = Convert.ToInt32(id);
output.Add(id_converted);
}
reader.Close();
runningSessionCopy = c.RunningSession;
//Save to Cache
parent.CurrentUser.Cache[ObjectLifetimeIdentifier.Create(CacheObject.StatisticsLearnSessions, lmId, Cache.DefaultStatisticValidationTime)] = output;
return(output);
}
/// <summary>
/// Deletes the chapter.
/// </summary>
/// <param name="lmid">The id of the learning module.</param>
/// <param name="id">The id.</param>
/// <remarks>Documented by Dev02, 2008-08-05</remarks>
/// <remarks>Documented by Dev08, 2009-01-12</remarks>
public void DeleteChapter(int lmid, int id)
{
using (SqlCeCommand cmd = MSSQLCEConn.CreateCommand(parent.CurrentUser))
{
cmd.CommandText = "DELETE FROM LearningModules_Cards WHERE cards_id IN (SELECT cards_id FROM Chapters_Cards WHERE chapters_id=@id); ";
cmd.CommandText += "DELETE FROM Cards_MediaContent WHERE cards_id IN (SELECT cards_id FROM Chapters_Cards WHERE chapters_id=@id); ";
cmd.CommandText += "DELETE FROM UserCardState WHERE cards_id IN (SELECT cards_id FROM Chapters_Cards WHERE chapters_id=@id); ";
cmd.CommandText += "DELETE FROM TextContent WHERE cards_id IN (SELECT cards_id FROM Chapters_Cards WHERE chapters_id=@id); ";
cmd.CommandText += "DELETE FROM LearnLog WHERE cards_id IN (SELECT cards_id FROM Chapters_Cards WHERE chapters_id=@id); ";
cmd.CommandText += "DELETE FROM Chapters_Cards WHERE chapters_id=@id; ";
cmd.CommandText += "DELETE FROM SelectedLearnChapters WHERE chapters_id=@id; ";
cmd.CommandText += "DELETE FROM Cards_MediaContent WHERE cards_id NOT IN (SELECT cards_id FROM LearningModules_Cards); ";
cmd.CommandText += "DELETE FROM UserCardState WHERE cards_id NOT IN (SELECT cards_id FROM LearningModules_Cards); ";
cmd.CommandText += "DELETE FROM TextContent WHERE cards_id NOT IN (SELECT cards_id FROM LearningModules_Cards); ";
cmd.CommandText += "DELETE FROM LearnLog WHERE cards_id NOT IN (SELECT cards_id FROM LearningModules_Cards); ";
cmd.CommandText += "DELETE FROM Cards WHERE id NOT IN (SELECT cards_id FROM LearningModules_Cards); ";
cmd.CommandText += "DELETE FROM Chapters WHERE id=@id";
cmd.Parameters.Add("@id", id);
if (MSSQLCEConn.ExecuteNonQuery(cmd) < 1)
{
throw new IdAccessException(id);
}
parent.CurrentUser.Cache.Uncache(ObjectLifetimeIdentifier.GetIdentifier(CacheObject.ChaptersList, lmid));
}
}
/// <summary>
/// Gets the description of the chapter.
/// </summary>
/// <param name="id">The id.</param>
/// <returns></returns>
/// <remarks>Documented by Dev02, 2008-08-05</remarks>
/// <remarks>Documented by Dev05, 2009-01-15</remarks>
public string GetDescription(int id)
{
string descriptionCache = Parent.CurrentUser.Cache[ObjectLifetimeIdentifier.GetIdentifier(CacheObject.ChapterDescription, id)] as string;
if (descriptionCache != null)
{
return(descriptionCache);
}
using (SqlCeCommand cmd = MSSQLCEConn.CreateCommand(Parent.CurrentUser))
{
cmd.CommandText = "SELECT id, description FROM \"Chapters\" WHERE lm_id IN (SELECT lm_id FROM \"Chapters\" WHERE id=@id)";
cmd.Parameters.Add("@id", id);
SqlCeDataReader reader = MSSQLCEConn.ExecuteReader(cmd);
string chapterDescription = string.Empty;
while (reader.Read())
{
int chip = Convert.ToInt32(reader["id"]);
string chapterDesc = reader["description"].ToString();
if (id == chip)
{
chapterDescription = chapterDesc;
}
Parent.CurrentUser.Cache[ObjectLifetimeIdentifier.Create(CacheObject.ChapterDescription, chip)] = chapterDesc;
}
reader.Close();
return(chapterDescription);
}
}
/// <summary>
/// Creates the new word.
/// </summary>
/// <param name="id">The id.</param>
/// <param name="word">The word.</param>
/// <param name="side">The side.</param>
/// <param name="type">The type.</param>
/// <param name="isDefault">if set to <c>true</c> [is default].</param>
/// <returns></returns>
/// <remarks>Documented by Dev03, 2009-01-09</remarks>
public IWord CreateNewWord(int id, string word, Side side, WordType type, bool isDefault)
{
if (word != null)
{
SqlCeCommand cmd = MSSQLCEConn.CreateCommand(Parent.CurrentUser);
cmd.CommandText = "SELECT position FROM TextContent WHERE cards_id=@id AND side=@side AND type=@type ORDER BY position DESC";
cmd.Parameters.Add("@id", id);
cmd.Parameters.Add("@side", side.ToString());
cmd.Parameters.Add("@type", type.ToString());
int currentPos = 0;
object retval = MSSQLCEConn.ExecuteScalar(cmd);
if (retval != DBNull.Value)
{
currentPos = Convert.ToInt32(retval);
}
cmd.Parameters.Clear();
cmd.CommandText = @"INSERT INTO TextContent (cards_id, text, side, type, position, is_default) VALUES (@id, @text, @side, @type, @position, @isdefault); SELECT @@IDENTITY;";
cmd.Parameters.Add("@id", id);
cmd.Parameters.Add("@text", word);
cmd.Parameters.Add("@side", side.ToString());
cmd.Parameters.Add("@type", type.ToString());
cmd.Parameters.Add("@position", currentPos + 10);
cmd.Parameters.Add("@isdefault", isDefault);
Parent.CurrentUser.Cache.Uncache(ObjectLifetimeIdentifier.GetIdentifier(ObjectLifetimeIdentifier.GetCacheObject(side, type), id));
return(new DbWord(Convert.ToInt32(MSSQLCEConn.ExecuteScalar(cmd)), word, type, isDefault, Parent));
}
else
{
return(null);
}
}
/// <summary>
/// Checks if the card exists and throws an IdAccessException if not.
/// </summary>
/// <param name="id">The card id.</param>
/// <remarks>Documented by Dev03, 2008-08-06</remarks>
/// <remarks>Documented by Dev08, 2009-01-09</remarks>
public void CheckCardId(int id)
{
List <int> cardIdsCache = parent.CurrentUser.Cache[ObjectLifetimeIdentifier.GetIdentifier(CacheObject.CardIdsList, 0)] as List <int>;
if (cardIdsCache != null && cardIdsCache.Contains(id))
{
return;
}
using (SqlCeCommand cmd = MSSQLCEConn.CreateCommand(parent.CurrentUser))
{
cmd.CommandText = "(SELECT lm_id FROM \"LearningModules_Cards\" WHERE cards_id=@id)";
cmd.Parameters.Add("@id", id);
int lmId = Convert.ToInt32(MSSQLCEConn.ExecuteScalar(cmd));
cmd.Parameters.Clear();
cmd.CommandText = "SELECT id FROM \"Cards\" WHERE id IN " +
"(SELECT cards_id FROM \"LearningModules_Cards\" WHERE lm_id=@lm_id)";
cmd.Parameters.Add("@lm_id", lmId);
SqlCeDataReader reader;
try { reader = MSSQLCEConn.ExecuteReader(cmd); }
catch { throw new IdAccessException(id); }
List <int> cardIds = new List <int>();
while (reader.Read())
{
cardIds.Add(Convert.ToInt32(reader["id"]));
}
reader.Close();
parent.CurrentUser.Cache[ObjectLifetimeIdentifier.Create(CacheObject.CardIdsList, 0)] = cardIds;
}
}
/// <summary>
/// Gets the title of the chapter.
/// </summary>
/// <param name="id">The id.</param>
/// <returns></returns>
/// <remarks>Documented by Dev02, 2008-08-05</remarks>
/// <remarks>Documented by Dev05, 2009-01-15</remarks>
public string GetTitle(int id)
{
string titleCache = Parent.CurrentUser.Cache[ObjectLifetimeIdentifier.GetIdentifier(CacheObject.ChapterTitle, id)] as string;
if (titleCache != null)
{
return(titleCache);
}
using (SqlCeCommand cmd = MSSQLCEConn.CreateCommand(Parent.CurrentUser))
{
cmd.CommandText = "SELECT id, title FROM \"Chapters\" WHERE lm_id IN (SELECT lm_id FROM \"Chapters\" WHERE id=@id);";
cmd.Parameters.Add("@id", id);
SqlCeDataReader reader = MSSQLCEConn.ExecuteReader(cmd);
string title = string.Empty;
while (reader.Read())
{
int chapterId = Convert.ToInt32(reader["id"]);
string chapterTitle = Convert.ToString(reader["title"]);
if (id == chapterId)
{
title = chapterTitle;
}
Parent.CurrentUser.Cache[ObjectLifetimeIdentifier.Create(CacheObject.ChapterTitle, chapterId, new TimeSpan(0, 10, 0))] = chapterTitle;
}
reader.Close();
return(title);
}
}
/// <summary>
/// Sets the chapter for a card.
/// </summary>
/// <param name="id">The card id.</param>
/// <param name="chapter">The chapter id.</param>
/// <remarks>Documented by Dev03, 2008-08-06</remarks>
/// <remarks>Documented by Dev08, 2009-01-09</remarks>
public void SetChapter(int id, int chapter)
{
using (SqlCeCommand cmd = MSSQLCEConn.CreateCommand(parent.CurrentUser))
{
SqlCeTransaction transaction = cmd.Connection.BeginTransaction();
cmd.CommandText = "SELECT count(*) FROM \"Chapters\" WHERE id=@chapterid";
cmd.Parameters.Add("chapterid", chapter);
if (Convert.ToInt32(MSSQLCEConn.ExecuteScalar(cmd)) < 1)
{
throw new IdAccessException(chapter);
}
Dictionary <int, int> cardChapterCache = parent.CurrentUser.Cache[ObjectLifetimeIdentifier.GetIdentifier(CacheObject.CardChapterList, 0)] as Dictionary <int, int>;
if (cardChapterCache != null)
{
cardChapterCache[id] = chapter;
}
using (SqlCeCommand cmd2 = MSSQLCEConn.CreateCommand(parent.CurrentUser))
{
cmd2.CommandText = "DELETE FROM \"Chapters_Cards\" WHERE cards_id=@id; ";
cmd2.CommandText += "INSERT INTO \"Chapters_Cards\" (chapters_id, cards_id) VALUES (@chapterid, @id);";
cmd2.CommandText += "UPDATE Cards SET chapters_id=@chapterid WHERE id=@id;";
cmd2.Parameters.Add("@chapterid", chapter);
cmd2.Parameters.Add("@id", id);
MSSQLCEConn.ExecuteNonQuery(cmd2);
}
transaction.Commit();
}
}
/// <summary>
/// Deletes the media object.
/// </summary>
/// <param name="id">The id.</param>
/// <remarks>Documented by Dev03, 2008-08-05</remarks>
/// <remarks>Documented by Dev03, 2009-01-13</remarks>
public void DeleteMedia(int id)
{
SqlCeCommand deletecmd = MSSQLCEConn.CreateCommand(Parent.CurrentUser);
deletecmd.CommandText = "DELETE FROM MediaProperties WHERE media_id=@id; DELETE FROM MediaContent WHERE id=@id;";
deletecmd.Parameters.Add("@id", id);
MSSQLCEConn.ExecuteNonQuery(deletecmd);
}
/// <summary>
/// Gets the default.
/// </summary>
/// <param name="id">The id.</param>
/// <returns></returns>
/// <remarks>Documented by Dev03, 2009-01-09</remarks>
public bool GetDefault(int id)
{
SqlCeCommand cmd = MSSQLCEConn.CreateCommand(Parent.CurrentUser);
cmd.CommandText = "SELECT is_default FROM TextContent WHERE id=@id";
cmd.Parameters.Add("@id", id);
return(Convert.ToBoolean(MSSQLCEConn.ExecuteScalar(cmd)));
}
/// <summary>
/// Gets the word.
/// </summary>
/// <param name="id">The id.</param>
/// <returns></returns>
/// <remarks>Documented by Dev03, 2009-01-09</remarks>
public string GetWord(int id)
{
SqlCeCommand cmd = MSSQLCEConn.CreateCommand(Parent.CurrentUser);
cmd.CommandText = "SELECT text FROM TextContent WHERE id=@id";
cmd.Parameters.Add("@id", id);
return(MSSQLCEConn.ExecuteScalar(cmd).ToString());
}
/// <summary>
/// Gets the type.
/// </summary>
/// <param name="id">The id.</param>
/// <returns></returns>
/// <remarks>Documented by Dev03, 2009-01-09</remarks>
public WordType GetType(int id)
{
SqlCeCommand cmd = MSSQLCEConn.CreateCommand(Parent.CurrentUser);
cmd.CommandText = "SELECT type FROM TextContent WHERE id=@id";
cmd.Parameters.Add("@id", id);
return((WordType)Enum.Parse(typeof(WordType), MSSQLCEConn.ExecuteScalar(cmd).ToString(), true));
}
/// <summary>
/// Gets the chapter for a card.
/// </summary>
/// <param name="id">The card id.</param>
/// <returns></returns>
/// <remarks>Documented by Dev03, 2008-08-06</remarks>
/// <remarks>Documented by Dev08, 2009-01-09</remarks>
public int GetChapter(int id)
{
Dictionary <int, int> cardChaptersCache = parent.CurrentUser.Cache[ObjectLifetimeIdentifier.GetIdentifier(CacheObject.CardChapterList, 0)] as Dictionary <int, int>;
if (cardChaptersCache != null && cardChaptersCache.ContainsKey(id))
{
return(cardChaptersCache[id]);
}
using (SqlCeCommand cmd = MSSQLCEConn.CreateCommand(parent.CurrentUser))
{
cmd.CommandText = "(SELECT lm_id FROM \"LearningModules_Cards\" WHERE cards_id=@id)";
cmd.Parameters.Add("@id", id);
int lmid = Convert.ToInt32(MSSQLCEConn.ExecuteScalar(cmd));
cmd.Parameters.Clear();
cmd.CommandText = "SELECT chapters_id, cards_id FROM Chapters_Cards WHERE chapters_id IN " +
"(SELECT chapters_id FROM Chapters WHERE lm_id=@lmid)";
cmd.Parameters.Add("@lmid", lmid);
SqlCeDataReader reader = MSSQLCEConn.ExecuteReader(cmd);
Dictionary <int, int> cardChapters = new Dictionary <int, int>();
while (reader.Read())
{
object[] chapters = new object[2];
reader.GetValues(chapters);
int chid = Convert.ToInt32(chapters[0]);
int cid = Convert.ToInt32(chapters[1]);
if (!cardChapters.ContainsKey(cid))
{
cardChapters[cid] = chid;
}
}
reader.Close();
// this should fix the bug where for some reason a card didn't have chapter assigned [ML-1708] (and similar)
int chapterId = 0;
if (!cardChapters.TryGetValue(id, out chapterId))
{
lock (cardChapters)
{
foreach (int c in cardChapters.Values)
{
chapterId = c;
break;
}
SetChapter(id, chapterId);
cardChapters.Add(id, chapterId);
}
}
parent.CurrentUser.Cache[ObjectLifetimeIdentifier.Create(CacheObject.CardChapterList, 0, new TimeSpan(23, 59, 59))] = cardChapters;
return(chapterId);
}
}
/// <summary>
/// Gets the GUID.
/// </summary>
/// <param name="id">The id.</param>
/// <returns></returns>
/// <remarks>Documented by Dev08, 2009-01-12</remarks>
public string GetGuid(int id)
{
using (SqlCeCommand cmd = MSSQLCEConn.CreateCommand(parent.CurrentUser))
{
cmd.CommandText = "SELECT guid FROM \"LearningModules\" WHERE id=@id";
cmd.Parameters.Add("@id", id);
return(Convert.ToString(MSSQLCEConn.ExecuteScalar(cmd)));
}
}
/// <summary>
/// Sets the default.
/// </summary>
/// <param name="id">The id.</param>
/// <param name="Default">if set to <c>true</c> [default].</param>
/// <remarks>Documented by Dev03, 2009-01-09</remarks>
public void SetDefault(int id, bool Default)
{
SqlCeCommand cmd = MSSQLCEConn.CreateCommand(Parent.CurrentUser);
cmd.CommandText = "UPDATE TextContent SET is_default=@isdefault WHERE id=@id";
cmd.Parameters.Add("@id", id);
cmd.Parameters.Add("@isdefault", Default);
MSSQLCEConn.ExecuteNonQuery(cmd);
}
/// <summary>
/// Determines whether this media is available.
/// </summary>
/// <param name="id">The id.</param>
/// <returns>
/// <c>true</c> if media is available; otherwise, <c>false</c>.
/// </returns>
/// <remarks>Documented by Dev05, 2009-03-30</remarks>
public bool IsMediaAvailable(int id)
{
SqlCeCommand cmd = MSSQLCEConn.CreateCommand(Parent.CurrentUser);
cmd.CommandText = "SELECT count(*) FROM MediaContent WHERE id=@id AND data IS NOT NULL";
cmd.Parameters.Add("@id", id);
return(MSSQLCEConn.ExecuteScalar <int>(cmd).Value > 0);
}
/// <summary>
/// Gets the associated lm id of the chapter.
/// </summary>
/// <param name="id">The id.</param>
/// <returns></returns>
/// <remarks>Documented by Dev02, 2008-08-05</remarks>
/// <remarks>Documented by Dev05, 2009-01-15</remarks>
public int GetLmId(int id)
{
using (SqlCeCommand cmd = MSSQLCEConn.CreateCommand(Parent.CurrentUser))
{
cmd.CommandText = "SELECT lm_id FROM \"Chapters\" WHERE id=@id";
cmd.Parameters.Add("@id", id);
return(Convert.ToInt32(MSSQLCEConn.ExecuteScalar(cmd)));
}
}
/// <summary>
/// Clears the media for card style.
/// </summary>
/// <param name="Id">The style id.</param>
/// <remarks>Documented by Dev03, 2009-03-05</remarks>
/// <remarks>Documented by Dev03, 2009-03-05</remarks>
public void ClearMediaForCardStyle(int Id)
{
using (SqlCeCommand cmd = MSSQLCEConn.CreateCommand(parent.CurrentUser))
{
cmd.CommandText = "DELETE FROM \"MediaContent_CardStyles\" WHERE cardstyles_id = @cardstyle_id";
cmd.Parameters.Add("@cardstyle_id", Id);
MSSQLCEConn.ExecuteNonQuery(cmd);
}
}
/// <summary>
/// Sets the word.
/// </summary>
/// <param name="id">The id.</param>
/// <param name="Word">The word.</param>
/// <remarks>Documented by Dev03, 2009-01-09</remarks>
public void SetWord(int id, string Word)
{
SqlCeCommand cmd = MSSQLCEConn.CreateCommand(Parent.CurrentUser);
cmd.CommandText = "UPDATE TextContent SET text=@text WHERE id=@id";
cmd.Parameters.Add("@id", id);
cmd.Parameters.Add("@text", Word);
MSSQLCEConn.ExecuteNonQuery(cmd);
}