/// <summary>
/// See interface docs.
/// </summary>
/// <param name="ex"></param>
public void Initialise(Exception ex)
{
#if DOTNET_BUILD
_Exception = ex as System.Data.SQLite.SQLiteException;
#else
_Exception = ex as Mono.Data.Sqlite.SqliteException;
#endif
}
/// <summary>
/// Handle DB specific exceptions.
/// Write errors to console only.
/// </summary>
/// <param name="dbx">the exception</param>
/// <param name="sql">the SQL statement text that threw the error</param>
/// <returns>return true if exception is from the preferred provider and no database was found, so that caller may try to create a new database</returns>
public static bool DBExceptionHandler(DbException dbx, string sql)
{
bool neednew = false;
//if (dbx is System.Data.SqlServerCe.SqlCeException) // SQL Server CE -- specific test against various SQL errors v. the no database found error
//{
// System.Data.SqlServerCe.SqlCeException x = (System.Data.SqlServerCe.SqlCeException)dbx;
// //x.NativeError ==
// DBMain.AltLog(LogLevels.Warning, 70147, DBExceptionString(dbx, sql));
//}
//else
if (dbx is System.Data.SQLite.SQLiteException) // SQLite3 -- specific test against various SQL errors v. the no database found error
{
System.Data.SQLite.SQLiteException x = (System.Data.SQLite.SQLiteException)dbx;
if (x.ResultCode == SQLiteErrorCode.Error) // SQL error or missing database
{
neednew = !(dbx.Message.EndsWith("syntax error") || // not an SQL syntax error
dbx.Message.Contains("no such table") || //or malformed schema,
dbx.Message.Contains("has no column named")); // nor mismatched column, but likely a missing DB
if (!neednew)
{
DBMain.AltLog(LogLevels.Warning, 70136, DBExceptionString(dbx, sql), true);
}
}
else
{
DBMain.AltLog(LogLevels.Warning, 70137, DBExceptionString(dbx, sql));
}
}
else if (dbx is System.Data.OleDb.OleDbException) // Access
{
DBMain.AltLog(LogLevels.Warning, 70140, DBExceptionString(dbx, sql));
// todo: expand when the "no DB present" code is known
}
else if (dbx is System.Data.Common.DbException) // anything else
{
DBMain.AltLog(LogLevels.Warning, 70139, DBExceptionString(dbx, sql));
// todo: expand when the "no DB present" code is known
}
else
{
Console.WriteLine(DBExceptionString(dbx, sql));
}
return(neednew);
}
public static tgConcurrencyException CheckForConcurrencyException(SQLiteException ex)
{
tgConcurrencyException ce = null;
return ce;
}
//
// WriteToEventLog
// A helper Function that writes exception detail to the event log. Exceptions
// are written to the event log as a security measure to avoid private database
// details from being returned to the browser. If a method does not return a status
// or boolean indicating the action succeeded or failed, a generic exception is also
// thrown by the caller.
//
private void WriteToEventLog(SQLiteException e, string action)
{
EventLog log = new EventLog();
log.Source = eventSource;
log.Log = eventLog;
string message = exceptionMessage + "\\n\\n";
message += "Action: " + action + "\\n\\n";
message += "Exception: " + e.ToString();
log.WriteEntry(message);
}
private void Crash(SQLiteException s, bool logerror)
{
if(logerror)
throw new CDatabaseException(string.Format(sLConsole.SQLite("Text2"), s.Message));
}
private void Crash(SQLiteException s, bool logerror, bool c = false)
{
if(c)
{
_crash = true;
Log.Error("SQLite", sLConsole.GetString("Query error: {0}"), s.Message);
Log.Warning("SQLite", sLConsole.GetString("Program shutting down!"));
SchumixBase.Quit(false);
foreach(var nw in INetwork.WriterList)
{
if(!nw.Value.IsNull())
nw.Value.WriteLine("QUIT :Sql connection crash.");
}
Thread.Sleep(1000);
sRuntime.Exit();
}
if(s.Message.Contains("Fatal error encountered during command execution."))
{
_crash = true;
Log.Error("SQLite", sLConsole.GetString("Query error: {0}"), s.Message);
Log.Warning("SQLite", sLConsole.GetString("Program shutting down!"));
SchumixBase.Quit(false);
foreach(var nw in INetwork.WriterList)
{
if(!nw.Value.IsNull())
nw.Value.WriteLine("QUIT :Sql connection crash.");
}
Thread.Sleep(1000);
sRuntime.Exit();
}
if(s.Message.Contains("Timeout expired."))
{
_crash = true;
Log.Error("SQLite", sLConsole.GetString("Query error: {0}"), s.Message);
Log.Warning("SQLite", sLConsole.GetString("Program shutting down!"));
SchumixBase.Quit(false);
foreach(var nw in INetwork.WriterList)
{
if(!nw.Value.IsNull())
nw.Value.WriteLine("QUIT :Sql connection timeout.");
}
Thread.Sleep(1000);
sRuntime.Exit();
}
if(logerror)
Log.Error("SQLite", sLConsole.GetString("Query error: {0}"), s.Message);
}
/// <summary>
/// Handle Non Fatal SQL Query Exception
/// </summary>
/// <param name="sqle">SQL Excepiton</param>
/// <returns>True if handled, False otherwise</returns>
protected static bool HandleSQLException(SQLiteException sqle)
{
switch (sqle.ResultCode)
{
case SQLiteErrorCode.Constraint:
case SQLiteErrorCode.Constraint_Check:
case SQLiteErrorCode.Constraint_ForeignKey:
case SQLiteErrorCode.Constraint_Unique:
case SQLiteErrorCode.Constraint_NotNull:
return true;
default:
return false;
}
}