private object Enqueue(IQuery query)
{
if (_currentBatch == null)
{
_currentBatch = new QueryBatch(_context);
}
return(_currentBatch.Add(query));
}
/// <summary>The get.</summary>
/// <param name="viewOrTableName">The view or table name.</param>
/// <returns></returns>
public DataTable Get(string viewOrTableName)
{
DbDataAdapter adapter = null;
DbCommand cmd = null;
DataTable dt = null;
QueryBatch batch = new QueryBatch();
Query query = new Query("SELECT * FROM " + viewOrTableName);
if (string.IsNullOrEmpty(viewOrTableName))
{
return(null);
}
if (_dataTables.ContainsKey(viewOrTableName))
{
return(_dataTables[viewOrTableName]);
}
try
{
if (_dbConnection == null || _dbConnection.State != ConnectionState.Open)
{
_dbConnection = Services.Settings.GetOpenConnection();
}
query.Result = new DataSet(viewOrTableName + " View");
batch.Clear();
batch.Add(query);
adapter = Services.Settings.ProviderFactory.CreateDataAdapter();
cmd = _dbConnection.CreateCommand();
cmd.CommandText = query.Sql;
cmd.CommandType = CommandType.Text;
adapter.SelectCommand = cmd;
adapter.Fill(query.Result);
}
// catch (Exception exp)
// {
// throw;
// }
finally
{
if (adapter != null)
{
adapter.Dispose();
}
if (cmd != null)
{
cmd.Dispose();
}
}
if (query.Result.Tables.Count > 0)
{
dt = query.Result.Tables[0];
_dataTables[viewOrTableName] = dt;
}
return(dt);
}
/// <summary>The load table data.</summary>
private void LoadTableData()
{
if (_services.Settings.ConnectionDefinition == null)
{
_services.HostWindow.DisplaySimpleMessageBox(this, "Please select a connection.", "Select a Connection");
return;
}
GetTablesAndViews();
DbDataAdapter adapter = null;
DbCommand cmd = null;
DataTable dt = null;
Query query = new Query("SELECT * FROM " + Utility.MakeSqlFriendly(TableName));
if (string.IsNullOrEmpty(TableName))
{
Text = Resources.Table_none;
return;
}
try
{
IsBusy = true;
UseWaitCursor = true;
dataGridViewResult.DataSource = null;
Application.DoEvents();
if (_dbConnection == null)
{
_dbConnection = _services.Settings.GetOpenConnection();
}
query.Result = new DataSet(TableName + " View");
_batch.Clear();
_batch.Add(query);
adapter = _services.Settings.ProviderFactory.CreateDataAdapter();
cmd = _dbConnection.CreateCommand();
cmd.CommandText = query.Sql;
cmd.CommandType = CommandType.Text;
SetCommandTimeout(cmd, _settings.CommandTimeout);
adapter.SelectCommand = cmd;
adapter.Fill(query.Result);
SetStatus(string.Format("Loaded table '{0}'", TableName));
Text = TableName;
}
catch (DbException dbExp)
{
// todo: improve!
_services.HostWindow.DisplaySimpleMessageBox(this, dbExp.Message, "View Table Error");
SetStatus(dbExp.Message);
Text = Resources.ViewDataError;
}
finally
{
if (adapter != null)
{
adapter.Dispose();
}
if (cmd != null)
{
cmd.Dispose();
}
UseWaitCursor = false;
IsBusy = false;
}
if (query.Result != null && query.Result.Tables.Count > 0)
{
dt = query.Result.Tables[0];
Text = Resources.Table_colon + TableName;
}
dataGridViewResult.DefaultCellStyle.NullValue = _settings.NullText;
dataGridViewResult.DataSource = dt;
if (dt != null)
{
SetRowCount(dt.Rows.Count);
}
}