public static XmlRecordsetReader CreateNew([NotNull] IRecordset data)
{
if (data == null)
{
throw new ArgumentNullException(nameof(data));
}
var reader = new XmlRecordsetReader();
reader.Load(data);
return(reader);
}
/// <summary>
/// Selects the many.
/// </summary>
/// <param name="query">The query.</param>
/// <returns></returns>
public IEnumerable <dynamic> SelectMany(string query)
{
using (var recordset = new DisposableRecordset(company))
{
recordset.DoQuery(query);
if (recordset.RecordCount <= 0)
{
yield break;
}
var reader = XmlRecordsetReader.CreateNew(recordset);
while (reader.MoveNext())
{
yield return(InstanceFactory.CreateDynamicObject(reader));
}
}
}
/// <summary>
/// Selects the many.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="query">The query.</param>
/// <param name="creator">The creator.</param>
/// <returns></returns>
public IEnumerable <T> SelectMany <T>(string query, InstanceCreator <T> creator)
{
using (var recordset = new DisposableRecordset(company))
{
recordset.DoQuery(query);
if (recordset.RecordCount <= 0)
{
yield break;
}
var reader = XmlRecordsetReader.CreateNew(recordset);
while (reader.MoveNext())
{
yield return(creator(reader));
}
}
}
/// <summary>
/// Selects the many.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="query">The query.</param>
/// <returns></returns>
public IEnumerable <T> SelectMany <T>(string query) where T : class
{
using (var recordset = new DisposableRecordset(company))
{
recordset.DoQuery(query);
if (recordset.RecordCount <= 0)
{
yield break;
}
var reader = XmlRecordsetReader.CreateNew(recordset);
while (reader.MoveNext())
{
yield return(InstanceFactory.AutoCreateInstance <T>(reader));
}
}
}
/// <summary>
/// Selects a single record from the database.
/// </summary>
/// <param name="query">The query.</param>
/// <returns></returns>
public dynamic SelectOne(string query)
{
using (var recordset = new DisposableRecordset(company))
{
recordset.DoQuery(query);
if (recordset.RecordCount <= 0)
{
return(null);
}
var reader = XmlRecordsetReader.CreateNew(recordset);
if (reader.MoveNext())
{
return(InstanceFactory.CreateDynamicObject(reader));
}
return(null);
}
}
/// <summary>
/// Selects a single record from the database.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="query">The query.</param>
/// <returns></returns>
public T SelectOne <T>(string query) where T : class
{
using (var recordset = new DisposableRecordset(company))
{
recordset.DoQuery(query);
if (recordset.RecordCount <= 0)
{
return(null);
}
var reader = XmlRecordsetReader.CreateNew(recordset);
if (reader.MoveNext())
{
return(InstanceFactory.AutoCreateInstance <T>(reader));
}
return(null);
}
}
/// <summary>
/// Selects a single record from the database.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="query">The query.</param>
/// <param name="creator">The creator.</param>
/// <param name="default">The default.</param>
/// <returns></returns>
public T SelectOne <T>(string query, InstanceCreator <T> creator, T @default) where T : class
{
using (var recordset = new DisposableRecordset(company))
{
recordset.DoQuery(query);
if (recordset.RecordCount <= 0)
{
return(@default);
}
var reader = XmlRecordsetReader.CreateNew(recordset);
if (reader.MoveNext())
{
return(creator(reader));
}
return(@default);
}
}
