internal ExcelQueryExecutor(ExcelQueryArgs args)
{
this.ValidateArgs(args);
this.args = args;
log.Debug("Connection String: {0}", ExcelUtilities.GetConnection(args).ConnectionString);
this.GetWorksheetName();
}
/// <summary>
/// Executes the sql query and returns the data results
/// </summary>
/// <typeparam name="T">Data type in the main from clause (queryModel.MainFromClause.ItemType)</typeparam>
/// <param name="queryModel">Linq query model</param>
protected IEnumerable <object> GetDataResults(SqlParts sql, QueryModel queryModel)
{
IEnumerable <object> results;
OleDbDataReader data = null;
var conn = ExcelUtilities.GetConnection(_args);
using (var command = conn.CreateCommand())
{
if (conn.State != ConnectionState.Open)
{
conn.Open();
}
command.CommandText = sql.ToString();
command.Parameters.AddRange(sql.Parameters.ToArray());
try { data = command.ExecuteReader(); }
catch (OleDbException e)
{
if (e.Message.Contains(_args.WorksheetName))
{
throw new DataException(
string.Format("'{0}' is not a valid worksheet name. Valid worksheet names are: '{1}'",
_args.WorksheetName, string.Join("', '", ExcelUtilities.GetWorksheetNames(_args.FileName).ToArray())));
}
if (!CheckIfInvalidColumnNameUsed(sql))
{
throw e;
}
}
var columns = ExcelUtilities.GetColumnNames(data);
LogColumnMappingWarnings(columns);
if (columns.Count() == 1 && columns.First() == "Expr1000")
{
results = GetScalarResults(data);
}
else if (queryModel.MainFromClause.ItemType == typeof(Row))
{
results = GetRowResults(data, columns);
}
else if (queryModel.MainFromClause.ItemType == typeof(RowNoHeader))
{
results = GetRowNoHeaderResults(data);
}
else
{
results = GetTypeResults(data, columns, queryModel);
}
}
if (_args.PersistentConnection == null)
{
conn.Dispose();
}
return(results);
}
internal ExcelQueryExecutor(ExcelQueryArgs args)
{
ValidateArgs(args);
_args = args;
if (_log.IsDebugEnabled)
{
_log.DebugFormat("Connection String: {0}", ExcelUtilities.GetConnection(args).ConnectionString);
}
GetWorksheetName();
}
internal ExcelQueryExecutor(ExcelQueryArgs args, ILogManagerFactory logManagerFactory)
{
ValidateArgs(args);
_args = args;
if (logManagerFactory != null)
{
_logManagerFactory = logManagerFactory;
_log = _logManagerFactory.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
}
if (_log != null && _log.IsDebugEnabled == true)
{
_log.DebugFormat("Connection String: {0}", ExcelUtilities.GetConnection(args).ConnectionString);
}
GetWorksheetName();
}
/// <summary>
/// Executes the sql query and returns the data results
/// </summary>
/// <typeparam name="T">Data type in the main from clause (queryModel.MainFromClause.ItemType)</typeparam>
protected IEnumerable <object> GetRowResults(string sql)
{
IEnumerable <object> results;
OleDbDataReader data = null;
var conn = ExcelUtilities.GetConnection(_args);
var command = conn.CreateCommand();
try
{
if (conn.State == ConnectionState.Closed)
{
conn.Open();
}
command.CommandText = sql.ToString();
try { data = command.ExecuteReader(); }
catch (OleDbException e)
{
if (e.Message.Contains(_args.WorksheetName))
{
throw new DataException(
string.Format("'{0}' is not a valid worksheet name in file {3}. Valid worksheet names are: '{1}'. Error received: {2}",
_args.WorksheetName, string.Join("', '", ExcelUtilities.GetWorksheetNames(_args.FileName).ToArray()), e.Message, _args.FileName), e);
}
}
var columns = ExcelUtilities.GetColumnNames(data);
LogColumnMappingWarnings(columns);
results = GetRowResults(data, columns);
}
finally
{
command.Dispose();
if (!_args.UsePersistentConnection)
{
conn.Dispose();
_args.PersistentConnection = null;
}
}
return(results);
}
/// <summary>
/// Executes the sql query and returns the data results
/// </summary>
/// <typeparam name="T">Data type in the main from clause (queryModel.MainFromClause.ItemType)</typeparam>
/// <param name="queryModel">Linq query model</param>
protected IEnumerable <object> GetDataResults(SqlParts sql, QueryModel queryModel)
{
IEnumerable <object> results;
OleDbDataReader data = null;
var conn = ExcelUtilities.GetConnection(this.args);
var command = conn.CreateCommand();
try
{
if (conn.State == ConnectionState.Closed)
{
conn.Open();
}
command.CommandText = sql.ToString();
command.Parameters.AddRange(sql.Parameters.ToArray());
try
{
data = command.ExecuteReader();
}
catch (OleDbException e)
{
if (e.Message.Contains(this.args.WorksheetName))
{
throw new DataException(
string.Format(
"'{0}' is not a valid worksheet name in file {3}. Valid worksheet names are: '{1}'. Error received: {2}",
this.args.WorksheetName,
string.Join("', '", ExcelUtilities.GetWorksheetNames(this.args.FileName).ToArray()), e.Message,
this.args.FileName), e);
}
if (!this.CheckIfInvalidColumnNameUsed(sql))
{
throw;
}
}
var columns = ExcelUtilities.GetColumnNames(data);
var enumerable = columns as string[] ?? columns.ToArray();
this.LogColumnMappingWarnings(enumerable);
if (enumerable.Length == 1 && enumerable.First() == "Expr1000")
{
results = this.GetScalarResults(data);
}
else if (queryModel.MainFromClause.ItemType == typeof(Row))
{
results = this.GetRowResults(data, enumerable);
}
else if (queryModel.MainFromClause.ItemType == typeof(RowNoHeader))
{
results = this.GetRowNoHeaderResults(data);
}
else
{
results = this.GetTypeResults(data, enumerable, queryModel);
}
}
finally
{
command.Dispose();
if (!this.args.UsePersistentConnection)
{
conn.Dispose();
this.args.PersistentConnection = null;
}
}
return(results);
}