/// <summary>
/// Execute query on the database without the regards for result.
/// Connection and transaction information will be appended to the provided command.
/// </summary>
/// <param name="query">ADO.NET driver</param>
/// <param name="sql">sql to execute</param>
/// <param name="parameters">sql parameters</param>
/// <returns>comand.Execute() result</returns>
public static int Execute(
this IDatabaseQuery query,
string sql,
params object[] parameters)
{
Contract.Requires(query != null);
Contract.Requires(!string.IsNullOrWhiteSpace(sql));
var com = query.CreateCommand(sql, parameters);
return(query.Execute(com));
}
/// <summary>
/// Execute query on the database and loop through the reader.
/// Connection and transaction information will be appended to the provided command.
/// Provided parameters will be inserted into the command.
/// command.ExecuteDataReader() will be called.
/// </summary>
/// <param name="query">ADO.NET driver</param>
/// <param name="sql">sql to execute</param>
/// <param name="action">datareader converter</param>
/// <param name="parameters">command parameters</param>
public static void Execute(
this IDatabaseQuery query,
string sql,
Action <IDataReader> action,
params object[] parameters)
{
Contract.Requires(query != null);
Contract.Requires(!string.IsNullOrWhiteSpace(sql));
var com = query.CreateCommand(sql, parameters);
query.Execute(com, action);
}
/// <summary>
/// Execute query on the database and fill DataTable with the result.
/// Connection and transaction information will be appended to the provided command.
/// </summary>
/// <param name="query">ADO.NET driver</param>
/// <param name="sql">sql to execute</param>
/// <param name="parameters">sql additional parameters</param>
/// <returns>populated table</returns>
public static DataTable Fill(
this IDatabaseQuery query,
string sql,
params object[] parameters)
{
Contract.Requires(query != null);
Contract.Requires(!string.IsNullOrWhiteSpace(sql));
var com = query.CreateCommand(sql, parameters);
var ds = new DataSet();
query.Fill(com, ds);
return(ds.Tables.Count > 0 ? ds.Tables[0] : new DataTable());
}
/// <summary>
/// Execute query on the database and return converted result.
/// Connection and transaction information will be appended to the provided command.
/// </summary>
/// <typeparam name="T">result type</typeparam>
/// <param name="query">ADO.NET driver</param>
/// <param name="sql">sql to execute</param>
/// <param name="instancer">object factory</param>
/// <param name="parameters"></param>
/// <returns></returns>
public static T Get <T>(
this IDatabaseQuery query,
string sql,
Func <IDataReader, T> instancer,
params object[] parameters)
{
Contract.Requires(query != null);
Contract.Requires(!string.IsNullOrWhiteSpace(sql));
var com = query.CreateCommand(sql, parameters);
T t = default(T);
query.Execute(com, dr => t = instancer(dr));
return(t);
}
/// <summary>
/// Execute query on the database and loop through the reader.
/// Return list populated from instance factory.
/// Connection and transaction information will be appended to the provided command.
/// command.ExecuteDataReader() will be called.
/// </summary>
/// <typeparam name="T">result type</typeparam>
/// <param name="query">ADO.NET driver</param>
/// <param name="sql">sql to execute</param>
/// <param name="instancer">object factory</param>
/// <param name="parameters">additional command parameters</param>
/// <returns>populated list</returns>
public static List <T> Fill <T>(
this IDatabaseQuery query,
string sql,
Func <IDataReader, T> instancer,
params object[] parameters)
{
Contract.Requires(query != null);
Contract.Requires(!string.IsNullOrWhiteSpace(sql));
var com = query.CreateCommand(sql, parameters);
var list = new List <T>();
query.Execute(com, dr => list.Add(instancer(dr)));
return(list);
}
