public int ExecuteNonQuery()
{
if (_conn.Trace)
{
Debug.WriteLine("Executing: " + this);
}
var r = SQLite3.Result.OK;
var stmt = Prepare();
r = SQLite3.Step(stmt);
Finalize(stmt);
if (r == SQLite3.Result.Done)
{
int rowsAffected = SQLite3.Changes(_conn.Handle);
return(rowsAffected);
}
else if (r == SQLite3.Result.Error)
{
string msg = SQLite3.GetErrmsg(_conn.Handle);
throw SQLiteException.New(r, msg);
}
else if (r == SQLite3.Result.Constraint)
{
if (SQLite3.ExtendedErrCode(_conn.Handle) == SQLite3.ExtendedResult.ConstraintNotNull)
{
throw NotNullConstraintViolationException.New(r, SQLite3.GetErrmsg(_conn.Handle));
}
}
throw SQLiteException.New(r, r.ToString());
}
internal T ExecuteScalar <T>()
{
if (_conn.Trace)
{
Debug.WriteLine("Executing Query: " + this);
}
T val = default(T);
var stmt = Prepare();
try
{
var r = SQLite3.Step(stmt);
if (r == SQLite3.Result.Row)
{
var colType = SQLite3.ColumnType(stmt, 0);
val = (T)ReadCol(stmt, 0, colType, typeof(T));
}
else if (r == SQLite3.Result.Done)
{
}
else
{
throw SQLiteException.New(r, SQLite3.GetErrmsg(_conn.Handle));
}
}
finally
{
Finalize(stmt);
}
return(val);
}
public void EnableLoadExtension(int onoff)
{
SQLite3.Result r = SQLite3.EnableLoadExtension(Handle, onoff);
if (r != SQLite3.Result.OK)
{
string msg = SQLite3.GetErrmsg(Handle);
throw SQLiteException.New(r, msg);
}
}
public void Close()
{
if (_open && Handle != NullHandle)
{
try
{
var r = SQLite3.Close(Handle);
if (r != SQLite3.Result.OK)
{
string msg = SQLite3.GetErrmsg(Handle);
throw SQLiteException.New(r, msg);
}
}
finally
{
Handle = NullHandle;
_open = false;
}
}
}
