/// <summary>
/// Creates and runs a command to execute a command text
/// </summary>
/// <param name="connection">Database connection</param>
/// <param name="commandText">Command text</param>
/// <param name="isStoredProcedure">Indicates if the command text is a stored procedure name</param>
/// <param name="parameters">Bind parameters</param>
/// <returns>Number of affected rows</returns>
internal static int ExecuteNonQuery(DBOracleConnection connection, string commandText, bool isStoredProcedure, params DBOracleParameter[] parameters)
{
try
{
using (var command = new DBOracleCommand(connection: connection, commandText: commandText, isStoredProcedure: isStoredProcedure, parameters: parameters))
{
return(command.Command.ExecuteNonQuery());
}
}
catch (Exception ex)
{
ex.ConvertOracleException(isConnecting: false);
throw;
}
}
/// <summary>
/// Create a new prepared statement (used by DBOracleBaseDAL)
/// </summary>
/// <param name="connection">Database connection</param>
/// <param name="commandText">Command text</param>
/// <param name="isStoredProcedure">Indicates if the command text is a stored procedure name</param>
/// <param name="parameters">Bind parameters</param>
internal DBOraclePreparedStatement(DBOracleConnection connection, string commandText, bool isStoredProcedure, params DBOracleParameter[] parameters)
{
try
{
Command = DBOracleCommand.CreatePreparedStatement(
connection: connection,
commandText: commandText,
isStoredProcedure: isStoredProcedure,
parameters: parameters);
}
catch (Exception ex)
{
ex.ConvertOracleException(isConnecting: false);
throw;
}
}
/// <summary>
/// Creates a new prepared statement (used by DBOraclePreparedStatement)
/// </summary>
/// <param name="connection">Database connection</param>
/// <param name="commandText">Command text</param>
/// <param name="isStoredProcedure">Indicates if the command text is a stored procedure name</param>
/// <param name="parameters">Bind parameters</param>
internal static DBOracleCommand CreatePreparedStatement(DBOracleConnection connection, string commandText, bool isStoredProcedure, params DBOracleParameter[] parameters)
{
DBOracleCommand command = null;
try
{
command = new DBOracleCommand(connection: connection, commandText: commandText, isStoredProcedure: isStoredProcedure, parameters: parameters);
command.Command.Prepare();
return(command);
}
catch (Exception ex)
{
command?.Close();
ex.ConvertOracleException(isConnecting: false);
throw;
}
}
/// <summary>
/// Creates and runs a command to retrieve a DataTable using a command text
/// </summary>
/// <param name="connection">Database connection</param>
/// <param name="commandText">Command text</param>
/// <param name="isStoredProcedure">Indicates if the command text is a stored procedure name</param>
/// <param name="parameters">Bind parameters</param>
/// <returns>DataTable with the command text results</returns>
internal static DataTable GetDataTable(DBOracleConnection connection, string commandText, bool isStoredProcedure, params DBOracleParameter[] parameters)
{
try
{
using (var command = new DBOracleCommand(connection: connection, commandText: commandText, isStoredProcedure: isStoredProcedure, parameters: parameters))
{
OracleDataAdapter dataAdapter;
try
{
dataAdapter = new OracleDataAdapter(command.Command);
}
catch (Exception ex)
{
try
{
Log.Debug(DBOracleLocalizedText.DBOracleCommand_GetDataSet_DataAdapterError, ex);
}
catch (Exception)
{
// Nothing to do
}
throw;
}
bool suppressDisposeException = false;
try
{
var dataTable = new DataTable();
dataAdapter.Fill(dataTable);
return(dataTable);
}
catch (Exception ex)
{
try
{
Log.Debug(DBOracleLocalizedText.DBOracleCommand_GetDataSet_DataRetrieveError, ex);
}
catch (Exception)
{
// Nothing to do
}
suppressDisposeException = true;
throw;
}
finally
{
try
{
dataAdapter.Dispose();
}
catch (Exception ex)
{
try
{
Log.Error(DBOracleLocalizedText.DBOracleCommand_DataAdapter_Disposal_Error, ex);
}
catch (Exception)
{
// Nothing to do
}
if (!suppressDisposeException)
{
throw;
}
}
}
}
}
catch (Exception ex)
{
ex.ConvertOracleException(isConnecting: false);
throw;
}
}
/// <summary>
/// Creates and runs a command to execute a query command text that returns a single row
/// </summary>
/// <typeparam name="T">Return type</typeparam>
/// <param name="connection">Database connection</param>
/// <param name="dataFiller">Function to convert the returned row into the return type object</param>
/// <param name="commandText">Command text</param>
/// <param name="isStoredProcedure">Indicates if the command text is a stored procedure name</param>
/// <param name="nullValue">Value to be returned if the query command text does not return any row</param>
/// <param name="parameters">Bind parameters</param>
/// <returns>Command text result, or nullValue if none</returns>
internal static T RetrieveDataItem <T>(DBOracleConnection connection, Func <DBOracleDataReader, T> dataFiller, string commandText, bool isStoredProcedure, T nullValue = default(T), params DBOracleParameter[] parameters)
{
try
{
using (var command = new DBOracleCommand(connection: connection, commandText: commandText, isStoredProcedure: isStoredProcedure, parameters: parameters))
{
var oracleDataReader = command.Command.ExecuteReader(behavior: CommandBehavior.SingleRow);
DBOracleDataReader dataReader = null;
try
{
dataReader = new DBOracleDataReader(oracleDataReader);
return((oracleDataReader.Read())
? dataFiller(dataReader)
: nullValue);
}
finally
{
dataReader?.Cleanup();
try
{
oracleDataReader?.Close();
}
catch (Exception ex)
{
try
{
Log.Error(DBOracleLocalizedText.DBOracleCommand_CloseDataReader, ex);
}
catch (Exception)
{
// Nothing to do
}
}
try
{
oracleDataReader?.Dispose();
}
catch (Exception ex)
{
try
{
Log.Error(DBOracleLocalizedText.DBOracleCommand_DisposeDataReader, ex);
}
catch (Exception)
{
// Nothing to do
}
}
}
}
}
catch (Exception ex)
{
ex.ConvertOracleException(isConnecting: false);
throw;
}
}
/// <summary>
/// Creates and runs a command to execute a command text that returns multiple rows
/// </summary>
/// <typeparam name="T">Return type</typeparam>
/// <param name="connection">Database connection</param>
/// <param name="dataFiller">Function to convert the returned rows into the return type object</param>
/// <param name="commandText">Command text</param>
/// <param name="isStoredProcedure">Indicates if the command text is a stored procedure name</param>
/// <param name="parameters">Bind parameters</param>
/// <returns>List of objects of the return type</returns>
internal static List <T> RetrieveDataList <T>(DBOracleConnection connection, Func <DBOracleDataReader, T> dataFiller, string commandText, bool isStoredProcedure, params DBOracleParameter[] parameters)
{
try
{
using (var command = new DBOracleCommand(connection: connection, commandText: commandText, isStoredProcedure: isStoredProcedure, parameters: parameters))
{
var oracleDataReader = command.Command.ExecuteReader();
DBOracleDataReader dataReader = null;
List <T> rowList = null;
try
{
dataReader = new DBOracleDataReader(oracleDataReader);
rowList = new List <T>();
while (oracleDataReader.Read())
{
rowList.Add(dataFiller(dataReader));
}
return(rowList);
}
catch (Exception)
{
rowList?.Clear(); // This method fills the internal array with zeros to help the gc
throw;
}
finally
{
dataReader?.Cleanup();
try
{
oracleDataReader?.Close();
}
catch (Exception ex)
{
try
{
Log.Error(DBOracleLocalizedText.DBOracleCommand_CloseDataReader, ex);
}
catch (Exception)
{
// Nothing to do
}
}
try
{
oracleDataReader?.Dispose();
}
catch (Exception ex)
{
try
{
Log.Error(DBOracleLocalizedText.DBOracleCommand_DisposeDataReader, ex);
}
catch (Exception)
{
// Nothing to do
}
}
}
}
}
catch (Exception ex)
{
ex.ConvertOracleException(isConnecting: false);
throw;
}
}
/// <summary>
/// Creates and runs a command to retrieve a DataTable using a stored procedure
/// </summary>
/// <param name="commandText">Stored procedure name</param>
/// <param name="parameters">Bind parameters</param>
/// <returns>DataTable with the query results</returns>
protected DataTable RetrieveDataTableSP(string commandText, params DBOracleParameter[] parameters)
{
return(DBOracleCommand.GetDataTable(connection: this, commandText: commandText, isStoredProcedure: true, parameters: parameters));
}
/// <summary>
/// Creates and runs a command to execute a stored procedure
/// </summary>
/// <param name="commandText">Stored procedure name</param>
/// <param name="parameters">Bind parameters</param>
/// <returns>Number of affected rows</returns>
protected int ExecuteSP(string commandText, params DBOracleParameter[] parameters)
{
return(DBOracleCommand.ExecuteNonQuery(connection: this, commandText: commandText, isStoredProcedure: true, parameters: parameters));
}
/// <summary>
/// Creates and runs a command to execute a stored procedure that returns a single row
/// </summary>
/// <typeparam name="T">Return type</typeparam>
/// <param name="dataFiller">Function to convert the returned row into the return type object</param>
/// <param name="commandText">Stored procedure name</param>
/// <param name="nullValue">Value to be returned if the stored procedure does not return any row</param>
/// <param name="parameters">Bind parameters</param>
/// <returns>Stored procedure result, or nullValue if none</returns>
protected T RetrieveDataItemSP <T>(Func <DBOracleDataReader, T> dataFiller, string commandText, T nullValue = default(T), params DBOracleParameter[] parameters)
{
return(DBOracleCommand.RetrieveDataItem(connection: this, dataFiller: dataFiller, commandText: commandText, isStoredProcedure: true, nullValue: nullValue, parameters: parameters));
}
/// <summary>
/// Creates and runs a command to execute a stored procedure that returns multiple rows
/// </summary>
/// <typeparam name="T">Return type</typeparam>
/// <param name="dataFiller">Function to convert the returned rows into the return type object</param>
/// <param name="commandText">Stored procedure name</param>
/// <param name="parameters">Bind parameters</param>
/// <returns>List of objects of the return type</returns>
protected List <T> RetrieveDataListSP <T>(Func <DBOracleDataReader, T> dataFiller, string commandText, params DBOracleParameter[] parameters)
{
return(DBOracleCommand.RetrieveDataList(connection: this, dataFiller: dataFiller, commandText: commandText, isStoredProcedure: true, parameters: parameters));
}
