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;
_connectionString = ExcelUtilities.GetConnectionString(args);
if (_log.IsDebugEnabled)
{
_log.DebugFormat("Connection String: {0}", _connectionString);
}
GetWorksheetName();
}
private bool CheckIfInvalidColumnNameUsed(SqlParts sql)
{
var usedColumns = sql.ColumnNamesUsed;
var tableColumns = ExcelUtilities.GetColumnNames(this.args.WorksheetName, this.args.NamedRangeName, this.args.FileName);
foreach (var column in usedColumns)
{
var enumerable = tableColumns as string[] ?? tableColumns.ToArray();
if (!enumerable.Contains(column))
{
throw new DataException($"'{column}' is not a valid column name. " +
$"Valid column names are: '{string.Join("', '", enumerable.ToArray())}'");
}
}
return(false);
}
internal ExcelQueryExecutor(ExcelQueryArgs args)
{
ValidateArgs(args);
_args = args;
string connectionString = args.PersistentConnection != null ?
args.PersistentConnection.ConnectionString :
ExcelUtilities.GetConnectionString(args);
if (_log.IsDebugEnabled)
{
_log.DebugFormat("Connection String: {0}", connectionString);
}
GetWorksheetName();
}
// This constructor is called by users, create a new IQueryExecutor.
internal ExcelQueryable(ExcelQueryArgs args, ILogManagerFactory logManagerFactory)
: base(QueryParser.CreateDefault(), CreateExecutor(args, logManagerFactory))
{
foreach (var property in typeof(T).GetProperties())
{
ExcelColumnAttribute att = (ExcelColumnAttribute)Attribute.GetCustomAttribute(property, typeof(ExcelColumnAttribute));
if (att != null && !args.ColumnMappings.ContainsKey(property.Name))
{
var columnNames = ExcelUtilities.GetColumnNames(args);
args.ColumnMappings.Add(property.Name, !att.IsForced ?
att.ColumnName :
columnNames.ToList().Find(x => att.HasSimilarColumn(x)) ?? att.ColumnName);
}
}
}
private bool CheckIfInvalidColumnNameUsed(SqlParts sql)
{
var usedColumns = sql.ColumnNamesUsed;
var tableColumns = ExcelUtilities.GetColumnNames(_args.WorksheetName, _args.NamedRangeName, _args.FileName);
foreach (var column in usedColumns)
{
if (!tableColumns.Contains(column))
{
throw new DataException(string.Format(
"'{0}' is not a valid column name. " +
"Valid column names are: '{1}'",
column,
string.Join("', '", tableColumns.ToArray())));
}
}
return(false);
}
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);
}
private void GetWorksheetName()
{
if (_args.FileName.ToLower().EndsWith("csv"))
{
_args.WorksheetName = Path.GetFileName(_args.FileName);
}
else if (_args.WorksheetIndex.HasValue)
{
var worksheetNames = ExcelUtilities.GetWorksheetNames(_args);
if (_args.WorksheetIndex.Value < worksheetNames.Count())
{
_args.WorksheetName = worksheetNames.ElementAt(_args.WorksheetIndex.Value);
}
else
{
throw new DataException("Worksheet Index Out of Range");
}
}
else if (String.IsNullOrEmpty(_args.WorksheetName) && String.IsNullOrEmpty(_args.NamedRangeName))
{
_args.WorksheetName = "Sheet1";
}
}
private void GetWorksheetName()
{
if (this.args.FileName.ToLower().EndsWith("csv"))
{
this.args.WorksheetName = Path.GetFileName(this.args.FileName);
}
else if (this.args.WorksheetIndex.HasValue)
{
var worksheetNames = ExcelUtilities.GetWorksheetNames(this.args);
var enumerable = worksheetNames as string[] ?? worksheetNames.ToArray();
if (this.args.WorksheetIndex.Value < enumerable.Count())
{
this.args.WorksheetName = enumerable.ElementAt(this.args.WorksheetIndex.Value);
}
else
{
throw new DataException("Worksheet Index Out of Range");
}
}
else if (string.IsNullOrEmpty(this.args.WorksheetName) && string.IsNullOrEmpty(this.args.NamedRangeName))
{
this.args.WorksheetName = "Sheet1";
}
}
internal ExcelQueryArgs()
: this(new ExcelQueryConstructorArgs() { DatabaseEngine = ExcelUtilities.DefaultDatabaseEngine() })
{
}
/// <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);
}
public ExcelQueryConstructorArgs()
{
DatabaseEngine = ExcelUtilities.DefaultDatabaseEngine();
}
