private static T ExecuteWithTracing <T>(VfpCommand vfpCommand, VfpCommandMethod method, Func <T> executeFunc)
{
var executionEventArgs = new VfpCommandExecutionDetails(vfpCommand, method);
executionEventArgs.Status = VfpCommandExecutionStatus.Executing;
vfpCommand.Connection.RaiseExecuting(executionEventArgs);
var sw = new Stopwatch();
try {
try {
sw.Start();
var result = executeFunc();
sw.Stop();
executionEventArgs.Result = result;
executionEventArgs.Duration = sw.Elapsed;
executionEventArgs.Status = VfpCommandExecutionStatus.Finished;
vfpCommand.Connection.RaiseFinished(executionEventArgs);
return(result);
}
catch (OleDbException oleDbException) {
throw new VfpException(oleDbException.Message, oleDbException);
}
}
catch (Exception ex) {
executionEventArgs.Result = ex;
executionEventArgs.Status = VfpCommandExecutionStatus.Failed;
vfpCommand.Connection.RaiseFailed(executionEventArgs);
throw;
}
}
internal static T Execute <T>(VfpCommand vfpCommand, VfpCommandMethod method, Func <T> executeFunc)
{
if (VfpClientTracing.Tracer.HasSourceLevel(SourceLevels.Information))
{
return(ExecuteWithTracing(vfpCommand, method, executeFunc));
}
return(ExecuteWithoutTracing(executeFunc));
}
protected override int Fill(DataTable[] dataTables, IDataReader dataReader, int startRecord, int maxRecords)
{
var result = VfpCommand.Execute(SelectCommand,
VfpCommandMethod.DataAdapterFill,
() => base.Fill(dataTables, new VfpDataReader((DbDataReader)dataReader), startRecord, maxRecords));
foreach (var dataTable in dataTables)
{
TrimEndAllStringColumn(dataTable);
}
return(result);
}
private VfpCommand GetCommand()
{
if (Parameters.Count == 0)
{
return(this);
}
var vfpCommand = new VfpCommand(this);
_vfpCommandParameterRewritter.Rewrite(vfpCommand);
return(vfpCommand);
}
public static string Build(VfpCommand command)
{
if (IsExecScript(command))
{
return(command.Parameters[0].Value.ToString());
}
var output = new StringBuilder();
WriteParameters(command, output);
WriteCommandText(command, output);
var vfpCode = output.ToString();
vfpCode = vfpCode.Trim(Environment.NewLine.ToCharArray());
return(vfpCode.Trim());
}
private static void WriteCommandText(VfpCommand command, StringBuilder output)
{
var text = command.CommandText;
for (var index = command.Parameters.Count - 1; index >= 0; index--)
{
var parameter = command.Parameters[index];
text = text.Replace("@" + parameter.ParameterName,
GetParameterName(parameter.ParameterName));
}
text = text.Trim(Environment.NewLine.ToCharArray())
.Replace("\n", string.Empty);
text = AddSemiColons(text);
text = ReplaceQuestionMarks(command.Parameters, text);
output.Append(Environment.NewLine);
output.Append(Environment.NewLine);
output.Append(text);
}
private static void WriteParameters(VfpCommand command, StringBuilder output)
{
foreach (VfpParameter parameter in command.Parameters)
{
output.Append(Environment.NewLine);
var parameterName = GetParameterName(parameter.ParameterName);
if (parameter.Value == null || parameter.Value == DBNull.Value)
{
output.Append(string.Format("{0} = NULL", parameterName));
}
else
{
switch (parameter.VfpType)
{
case VfpType.Logical:
output.Append(string.Format("{0} = {1}", parameterName, ((bool)parameter.Value) ? ".t." : ".f."));
break;
case VfpType.Character:
case VfpType.Varchar:
case VfpType.Memo:
var parameterValue = parameter.Value.ToString();
if (parameterValue.Length > VfpMapping.MaximumCharacterFieldSize || parameterValue.IndexOf(Environment.NewLine) >= 0)
{
output.AppendLine(string.Format(@"
TEXT TO {0} NOSHOW
{1}
ENDTEXT"
, parameterName, parameterValue));
}
else
{
output.Append(string.Format("{0} = '{1}'", parameterName, parameterValue.Replace("'", "' + chr(39) + '")));
}
break;
case VfpType.Date:
output.Append(string.Format("{0} = CTOD('{1}')", parameterName, ((DateTime)parameter.Value).ToShortDateString()));
break;
case VfpType.DateTime:
output.Append(string.Format("{0} = CTOT('{1}')", parameterName, parameter.Value));
break;
default:
if (typeof(byte[]) == parameter.Value.GetType())
{
var fileName = Path.GetTempFileName();
File.WriteAllBytes(fileName, (byte[])parameter.Value);
output.Append(string.Format("{0} = FILETOSTR('{1}')", parameterName, fileName));
}
else
{
output.Append(string.Format("{0} = {1}", parameterName, parameter.Value));
}
break;
}
}
}
}
public VfpDataAdapter(string selectCommandText, string selectCommandConnection)
{
_vfpConnection = new VfpConnection(selectCommandConnection);
SelectCommand = new VfpCommand(selectCommandText, _vfpConnection);
}
public VfpDataAdapter(VfpCommand selectCommand)
{
_vfpConnection = null;
SelectCommand = selectCommand;
}
protected internal VfpCommand(VfpCommand vfpCommand)
: this(vfpCommand.OleDbCommand.Clone(), vfpCommand._vfpConnection)
{
}
internal VfpCommandExecutionDetails(VfpCommand command, VfpCommandMethod method)
{
CommandId = command.CommandId;
Command = command;
Method = method;
}
