public static void SetPrimaryKey(SqlCeTransaction trans, SqlCeRowUpdatedEventArgs e)
{
// If this is an INSERT operation...
if (e.Status == UpdateStatus.Continue && e.StatementType == StatementType.Insert)
{
System.Data.DataColumn[] pk = e.Row.Table.PrimaryKey;
// and a primary key PK column exists...
if (pk != null && pk.Length == 1)
{
//Set up the post-update query to fetch new @@Identity
SqlCeCommand cmdGetIdentity = new SqlCeCommand("SELECT @@IDENTITY", (SqlCeConnection)trans.Connection, trans);
//Execute the command and set the result identity value to the PK
e.Row[pk[0]] = Convert.ToInt32(cmdGetIdentity.ExecuteScalar());
e.Row.AcceptChanges();
}
}
}
protected static void OnRowUpdated(object sender, SqlCeRowUpdatedEventArgs 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))
{
esDataRequest request = props["esDataRequest"] as esDataRequest;
esEntitySavePacket packet = (esEntitySavePacket)props["esEntityData"];
if (e.StatementType == StatementType.Insert)
{
if (props.Contains("AutoInc"))
{
string autoInc = props["AutoInc"] as string;
SqlCeCommand cmd = new SqlCeCommand();
cmd.Connection = e.Command.Connection;
cmd.Transaction = e.Command.Transaction;
cmd.CommandText = "SELECT @@IDENTITY";
cmd.CommandType = CommandType.Text;
object o = null;
#region Profiling
if (sTraceHandler != null)
{
using (esTraceArguments esTrace = new esTraceArguments(request, cmd, "OnRowUpdated", System.Environment.StackTrace))
{
try
{
o = cmd.ExecuteScalar();
}
catch (Exception ex)
{
esTrace.Exception = ex.Message;
throw;
}
}
}
else
#endregion
{
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
SqlCeCommand cmd = new SqlCeCommand();
cmd.Connection = e.Command.Connection;
cmd.Transaction = e.Command.Transaction;
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)
{
SqlCeParameter p = new SqlCeParameter("@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 + ";";
SqlCeDataReader rdr = null;
try
{
#region Profiling
if (sTraceHandler != null)
{
using (esTraceArguments esTrace = new esTraceArguments(request, cmd, "OnRowUpdated", System.Environment.StackTrace))
{
try
{
rdr = cmd.ExecuteReader(CommandBehavior.SingleResult);
}
catch (Exception ex)
{
esTrace.Exception = ex.Message;
throw;
}
}
}
else
#endregion
{
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 { }
}
/// <devdoc>
/// Listens for the RowUpdate event on a dataadapter to support UpdateBehavior.Continue
/// </devdoc>
private void OnSqlRowUpdated(object sender, SqlCeRowUpdatedEventArgs rowThatCouldNotBeWritten)
{
if (rowThatCouldNotBeWritten.RecordsAffected == 0)
{
if (rowThatCouldNotBeWritten.Errors != null)
{
rowThatCouldNotBeWritten.Row.RowError = Resources.ExceptionMessageUpdateDataSetRowFailure;
rowThatCouldNotBeWritten.Status = UpdateStatus.SkipCurrentRow;
}
}
}
private void _adapter_RowUpdated(object sender, SqlCeRowUpdatedEventArgs e)
{
SQLCEIDHelper.SetPrimaryKey(this.Transaction, e);
}
