// This is used only to execute the Dynamic Query API
private static void LoadDataTableFromDynamicQuery(tgDataRequest request, tgDataResponse response, SqliteCommand cmd)
{
try
{
response.LastQuery = cmd.CommandText;
if (request.CommandTimeout != null) cmd.CommandTimeout = request.CommandTimeout.Value;
DataTable dataTable = new DataTable(request.ProviderMetadata.Destination);
SqliteDataAdapter da = new SqliteDataAdapter();
da.SelectCommand = cmd;
try
{
tgTransactionScope.Enlist(da.SelectCommand, request.ConnectionString, CreateIDbConnectionDelegate);
#region Profiling
if (sTraceHandler != null)
{
using (tgTraceArguments esTrace = new tgTraceArguments(request, cmd, "LoadFromDynamicQuery", System.Environment.StackTrace))
{
try
{
da.Fill(dataTable);
}
catch (Exception ex)
{
esTrace.Exception = ex.Message;
throw;
}
}
}
else
#endregion Profiling
{
da.Fill(dataTable);
}
}
finally
{
tgTransactionScope.DeEnlist(da.SelectCommand);
}
response.Table = dataTable;
}
catch (Exception ex)
{
CleanupCommand(cmd);
throw ex;
}
finally
{
}
}
private static tgDataResponse LoadDataTableFromText(tgDataRequest request)
{
tgDataResponse response = new tgDataResponse();
SqliteCommand cmd = null;
try
{
DataTable dataTable = new DataTable(request.ProviderMetadata.Destination);
cmd = new SqliteCommand();
cmd.CommandType = CommandType.Text;
if (request.CommandTimeout != null) cmd.CommandTimeout = request.CommandTimeout.Value;
if (request.Parameters != null) Shared.AddParameters(cmd, request);
SqliteDataAdapter da = new SqliteDataAdapter();
cmd.CommandText = request.QueryText;
da.SelectCommand = cmd;
try
{
tgTransactionScope.Enlist(da.SelectCommand, request.ConnectionString, CreateIDbConnectionDelegate);
#region Profiling
if (sTraceHandler != null)
{
using (tgTraceArguments esTrace = new tgTraceArguments(request, cmd, "LoadFromText", System.Environment.StackTrace))
{
try
{
da.Fill(dataTable);
}
catch (Exception ex)
{
esTrace.Exception = ex.Message;
throw;
}
}
}
else
#endregion Profiling
{
da.Fill(dataTable);
}
}
finally
{
tgTransactionScope.DeEnlist(da.SelectCommand);
}
response.Table = dataTable;
if (request.Parameters != null)
{
Shared.GatherReturnParameters(cmd, request, response);
}
}
catch (Exception ex)
{
CleanupCommand(cmd);
throw ex;
}
finally
{
}
return response;
}
// If it's an Insert we fetch the @@Identity value and stuff it in the proper column
protected static void OnRowUpdated(object sender, System.Data.Common.RowUpdatedEventArgs e)
{
try
{
PropertyCollection props = e.Row.Table.ExtendedProperties;
if (props.ContainsKey("props"))
{
props = (PropertyCollection)props["props"];
}
if (e.Status == UpdateStatus.Continue && (e.StatementType == StatementType.Insert || e.StatementType == StatementType.Update))
{
tgDataRequest request = props["tgDataRequest"] as tgDataRequest;
tgEntitySavePacket packet = (tgEntitySavePacket)props["esEntityData"];
if (e.StatementType == StatementType.Insert)
{
if (props.Contains("AutoInc"))
{
string autoInc = props["AutoInc"] as string;
SqliteCommand cmd = new SqliteCommand();
cmd.Connection = e.Command.Connection as SqliteConnection;
cmd.Transaction = e.Command.Transaction as SqliteTransaction;
cmd.CommandText = "SELECT last_insert_rowid()";
cmd.CommandType = CommandType.Text;
object o = null;
#region Profiling
if (sTraceHandler != null)
{
using (tgTraceArguments esTrace = new tgTraceArguments(request, cmd, "OnRowUpdated", System.Environment.StackTrace))
{
try
{
o = cmd.ExecuteScalar();
}
catch (Exception ex)
{
esTrace.Exception = ex.Message;
throw;
}
}
}
else
#endregion Profiling
{
o = cmd.ExecuteScalar();
}
if (o != null)
{
packet.CurrentValues[autoInc] = o;
e.Row[autoInc] = o;
}
}
if (props.Contains("EntitySpacesConcurrency"))
{
string esConcurrencyColumn = props["EntitySpacesConcurrency"] as string;
packet.CurrentValues[esConcurrencyColumn] = 1;
}
}
//-------------------------------------------------------------------------------------------------
// Fetch any defaults, SQLite doesn't support output parameters so we gotta do this the hard way
//-------------------------------------------------------------------------------------------------
if (props.Contains("Defaults"))
{
// Build the Where parameter and parameters
SqliteCommand cmd = new SqliteCommand();
cmd.Connection = e.Command.Connection as SqliteConnection;
cmd.Transaction = e.Command.Transaction as SqliteTransaction;
string select = (string)props["Defaults"];
string[] whereParameters = ((string)props["Where"]).Split(',');
string comma = String.Empty;
string where = String.Empty;
int i = 1;
foreach (string parameter in whereParameters)
{
SqliteParameter p = new SqliteParameter("@p" + i++.ToString(), e.Row[parameter]);
cmd.Parameters.Add(p);
where += comma + "[" + parameter + "]=" + p.ParameterName;
comma = " AND ";
}
// Okay, now we can execute the sql and get any values that have defaults that were
// null at the time of the insert and/or our timestamp
cmd.CommandText = "SELECT " + select + " FROM [" + request.ProviderMetadata.Source + "] WHERE " + where + ";";
SqliteDataReader rdr = null;
try
{
#region Profiling
if (sTraceHandler != null)
{
using (tgTraceArguments esTrace = new tgTraceArguments(request, cmd, "OnRowUpdated", System.Environment.StackTrace))
{
try
{
rdr = cmd.ExecuteReader(CommandBehavior.SingleResult);
}
catch (Exception ex)
{
esTrace.Exception = ex.Message;
throw;
}
}
}
else
#endregion Profiling
{
rdr = cmd.ExecuteReader(CommandBehavior.SingleResult);
}
if (rdr.Read())
{
select = select.Replace("[", String.Empty).Replace("]", String.Empty);
string[] selectCols = select.Split(',');
for (int k = 0; k < selectCols.Length; k++)
{
packet.CurrentValues[selectCols[k]] = rdr.GetValue(k);
}
}
}
finally
{
// Make sure we close the reader no matter what
if (rdr != null) rdr.Close();
}
}
if (e.StatementType == StatementType.Update)
{
string colName = props["EntitySpacesConcurrency"] as string;
object o = e.Row[colName];
switch (Type.GetTypeCode(o.GetType()))
{
case TypeCode.Int16: packet.CurrentValues[colName] = ((System.Int16)o) + 1; break;
case TypeCode.Int32: packet.CurrentValues[colName] = ((System.Int32)o) + 1; break;
case TypeCode.Int64: packet.CurrentValues[colName] = ((System.Int64)o) + 1; break;
case TypeCode.UInt16: packet.CurrentValues[colName] = ((System.UInt16)o) + 1; break;
case TypeCode.UInt32: packet.CurrentValues[colName] = ((System.UInt32)o) + 1; break;
case TypeCode.UInt64: packet.CurrentValues[colName] = ((System.UInt64)o) + 1; break;
}
}
}
}
catch { }
}
tgDataResponse IDataProvider.ExecuteScalar(tgDataRequest request)
{
tgDataResponse response = new tgDataResponse();
SqliteCommand cmd = null;
try
{
cmd = new SqliteCommand();
if (request.CommandTimeout != null) cmd.CommandTimeout = request.CommandTimeout.Value;
if (request.Parameters != null) Shared.AddParameters(cmd, request);
switch (request.QueryType)
{
case tgQueryType.TableDirect:
cmd.CommandType = CommandType.TableDirect;
cmd.CommandText = request.QueryText;
break;
case tgQueryType.StoredProcedure:
cmd.CommandType = CommandType.StoredProcedure;
cmd.CommandText = Shared.CreateFullName(request);
break;
case tgQueryType.Text:
cmd.CommandType = CommandType.Text;
cmd.CommandText = request.QueryText;
break;
case tgQueryType.DynamicQuery:
cmd = QueryBuilder.PrepareCommand(request);
break;
}
try
{
tgTransactionScope.Enlist(cmd, request.ConnectionString, CreateIDbConnectionDelegate);
#region Profiling
if (sTraceHandler != null)
{
using (tgTraceArguments esTrace = new tgTraceArguments(request, cmd, "ExecuteScalar", System.Environment.StackTrace))
{
try
{
response.Scalar = cmd.ExecuteScalar();
}
catch (Exception ex)
{
esTrace.Exception = ex.Message;
throw;
}
}
}
else
#endregion Profiling
{
response.Scalar = cmd.ExecuteScalar();
}
}
finally
{
tgTransactionScope.DeEnlist(cmd);
}
if (request.Parameters != null)
{
Shared.GatherReturnParameters(cmd, request, response);
}
}
catch (Exception ex)
{
CleanupCommand(cmd);
response.Exception = ex;
}
return response;
}
private static DataTable SaveDynamicEntity(tgDataRequest request)
{
bool needToDelete = request.EntitySavePacket.RowState == tgDataRowState.Deleted;
DataTable dataTable = CreateDataTable(request);
using (SqliteDataAdapter da = new SqliteDataAdapter())
{
da.AcceptChangesDuringUpdate = false;
DataRow row = dataTable.NewRow();
dataTable.Rows.Add(row);
SqliteCommand cmd = null;
switch (request.EntitySavePacket.RowState)
{
case tgDataRowState.Added:
cmd = da.InsertCommand = Shared.BuildDynamicInsertCommand(request, request.EntitySavePacket);
SetModifiedValues(request, request.EntitySavePacket, row);
break;
case tgDataRowState.Modified:
cmd = da.UpdateCommand = Shared.BuildDynamicUpdateCommand(request, request.EntitySavePacket);
SetOriginalValues(request, request.EntitySavePacket, row, false);
SetModifiedValues(request, request.EntitySavePacket, row);
row.AcceptChanges();
row.SetModified();
break;
case tgDataRowState.Deleted:
cmd = da.DeleteCommand = Shared.BuildDynamicDeleteCommand(request);
SetOriginalValues(request, request.EntitySavePacket, row, true);
row.AcceptChanges();
row.Delete();
break;
}
if (!needToDelete && request.Properties != null)
{
request.Properties["tgDataRequest"] = request;
request.Properties["esEntityData"] = request.EntitySavePacket;
dataTable.ExtendedProperties["props"] = request.Properties;
}
DataRow[] singleRow = new DataRow[1];
singleRow[0] = row;
try
{
if (!request.IgnoreComputedColumns)
{
da.RowUpdated += new EventHandler<System.Data.Common.RowUpdatedEventArgs>(OnRowUpdated);
}
tgTransactionScope.Enlist(cmd, request.ConnectionString, CreateIDbConnectionDelegate);
#region Profiling
if (sTraceHandler != null)
{
using (tgTraceArguments esTrace = new tgTraceArguments(request, cmd, request.EntitySavePacket, "SaveEntityDynamic", System.Environment.StackTrace))
{
try
{
da.Update(singleRow);
}
catch (Exception ex)
{
esTrace.Exception = ex.Message;
throw;
}
}
}
else
#endregion Profiling
{
da.Update(singleRow);
}
}
finally
{
tgTransactionScope.DeEnlist(cmd);
}
if (request.EntitySavePacket.RowState != tgDataRowState.Deleted && cmd.Parameters != null)
{
foreach (SqliteParameter param in cmd.Parameters)
{
switch (param.Direction)
{
case ParameterDirection.Output:
case ParameterDirection.InputOutput:
request.EntitySavePacket.CurrentValues[param.SourceColumn] = param.Value;
break;
}
}
}
cmd.Dispose();
}
return dataTable;
}
private static DataTable SaveDynamicCollection_Deletes(tgDataRequest request)
{
SqliteCommand cmd = null;
DataTable dataTable = CreateDataTable(request);
using (tgTransactionScope scope = new tgTransactionScope())
{
using (SqliteDataAdapter da = new SqliteDataAdapter())
{
da.AcceptChangesDuringUpdate = false;
da.ContinueUpdateOnError = request.ContinueUpdateOnError;
try
{
cmd = da.DeleteCommand = Shared.BuildDynamicDeleteCommand(request);
tgTransactionScope.Enlist(cmd, request.ConnectionString, CreateIDbConnectionDelegate);
DataRow[] singleRow = new DataRow[1];
// Delete each record
foreach (tgEntitySavePacket packet in request.CollectionSavePacket)
{
DataRow row = dataTable.NewRow();
dataTable.Rows.Add(row);
SetOriginalValues(request, packet, row, true);
row.AcceptChanges();
row.Delete();
singleRow[0] = row;
#region Profiling
if (sTraceHandler != null)
{
using (tgTraceArguments esTrace = new tgTraceArguments(request, cmd, packet, "SaveCollectionDynamic", System.Environment.StackTrace))
{
try
{
da.Update(singleRow);
}
catch (Exception ex)
{
esTrace.Exception = ex.Message;
throw;
}
}
}
else
#endregion Profiling
{
da.Update(singleRow);
}
if (row.HasErrors)
{
request.FireOnError(packet, row.RowError);
}
dataTable.Rows.Clear(); // ADO.NET won't let us reuse the same DataRow
}
}
finally
{
tgTransactionScope.DeEnlist(cmd);
cmd.Dispose();
}
}
scope.Complete();
}
return request.Table;
}
private static tgDataResponse LoadManyToMany(tgDataRequest request)
{
tgDataResponse response = new tgDataResponse();
SqliteCommand cmd = null;
try
{
DataTable dataTable = new DataTable(request.ProviderMetadata.Destination);
cmd = new SqliteCommand();
cmd.CommandType = CommandType.Text;
if (request.CommandTimeout != null) cmd.CommandTimeout = request.CommandTimeout.Value;
string mmQuery = request.QueryText;
string[] sections = mmQuery.Split('|');
string[] tables = sections[0].Split(',');
string[] columns = sections[1].Split(',');
// We build the query, we don't use Delimiters to avoid tons of extra concatentation
string sql = "SELECT * FROM [" + tables[0];
sql += "] JOIN [" + tables[1] + "] ON [" + tables[0] + "].[" + columns[0] + "] = [";
sql += tables[1] + "].[" + columns[1];
sql += "] WHERE [" + tables[1] + "].[" + sections[2] + "] = @";
if (request.Parameters != null)
{
foreach (tgParameter esParam in request.Parameters)
{
sql += esParam.Name;
}
Shared.AddParameters(cmd, request);
}
SqliteDataAdapter da = new SqliteDataAdapter();
cmd.CommandText = sql;
da.SelectCommand = cmd;
try
{
tgTransactionScope.Enlist(da.SelectCommand, request.ConnectionString, CreateIDbConnectionDelegate);
#region Profiling
if (sTraceHandler != null)
{
using (tgTraceArguments esTrace = new tgTraceArguments(request, cmd, "LoadManyToMany", System.Environment.StackTrace))
{
try
{
da.Fill(dataTable);
}
catch (Exception ex)
{
esTrace.Exception = ex.Message;
throw;
}
}
}
else
#endregion Profiling
{
da.Fill(dataTable);
}
}
finally
{
tgTransactionScope.DeEnlist(da.SelectCommand);
}
response.Table = dataTable;
}
catch (Exception ex)
{
CleanupCommand(cmd);
throw ex;
}
finally
{
}
return response;
}
