/// <summary>
/// Map to an existing instance
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="connection"></param>
/// <param name="query"></param>
/// <param name="ignoreExtraRows"></param>
/// <param name="target"></param>
/// <param name="parameters"></param>
/// <returns></returns>
protected bool TryGetSingle <T>(
object query,
T target,
bool ignoreExtraRows,
params object[] parameters)
{
var wrapper = new SqlQueryParser <T>(QueryType.Select, query, Transaction, parameters);
wrapper.ExpectSelectQuery();
bool looped = false;
using (IDataReader reader = wrapper.RunQuery(StorageController))
{
DataReaderWrapper drWrap = new DataReaderWrapper(reader);
MapperWrapper <T> mapWrap = new MapperWrapper <T>(drWrap);
foreach (var item in mapWrap)
{
if (looped)
{
throw new IQException("More than one record was returned by the Single<T> query");
}
target = item;
looped = true;
if (ignoreExtraRows)
{
break;
}
}
}
return(looped);
}
/// <summary>
/// Return true of anything matches the criteria
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="where"></param>
/// <param name="parameters"></param>
/// <returns></returns>
//public bool Any<T>(string where, params object[] parameters)
//{
// var wrapper = new SqlQueryParser<T>(QueryType.Where, where, Transaction, parameters);
// wrapper.ExpectSelectQuery();
// //wrapper.QueryFull.Top = 1;
// wrapper.QueryFull.Select = "1";
// int target;
// return TryGetSingle<int>(wrapper,false,out target);
//}
public IEnumerable <T> Where <T>(string where, params object[] parameters)
{
var wrapper = new SqlQueryParser <T>(QueryType.Where, where, Transaction, parameters);
return(MapAll <T>(wrapper.RunQuery(StorageController), wrapper.Buffered));
}
public IDataReader Query(string query, params object[] parameters)
{
var wrapper = new SqlQueryParser <object>(0, query, Transaction, parameters);
return(wrapper.RunQuery(StorageController));
}
public IEnumerable <T> Select <T>(object query, params object[] parameters)
{
var wrapper = new SqlQueryParser <T>(QueryType.Select, query, Transaction, parameters);
return(MapAll <T>(wrapper.RunQuery(StorageController), wrapper.Buffered));
}
