/// <summary>
/// The select and expand query options.
/// </summary>
/// <param name="query">
/// The OData aware query.
/// </param>
/// <param name="selectText">
/// The $select parameter text.
/// </param>
/// <param name="expandText">
/// The $expand parameter text.
/// </param>
/// <param name="entitySetName">
/// The entity set name.
/// </param>
/// <typeparam name="T">
/// The query type param
/// </typeparam>
/// <returns>
/// The <see cref="IEnumerable{ISelectExpandWrapper}"/> selection result in specific format.
/// </returns>
public static IEnumerable <ISelectExpandWrapper> SelectExpand <T>(
this ODataQuery <T> query,
string selectText = null,
string expandText = null,
string entitySetName = null)
{
SelectExpandHelper <T> helper = new SelectExpandHelper <T>(
new ODataRawQueryOptions {
Select = selectText, Expand = expandText
},
query,
entitySetName);
helper.AddAutoSelectExpandProperties();
var result = helper.Apply(query);
// In case of SelectExpand ,ethod was called to convert to ISelectExpandWrapper without actually applying $select and $expand params
if (result == query && selectText == null && expandText == null)
{
return(SelectExpand(query, "*", expandText, entitySetName));
}
return(result.OfType <ISelectExpandWrapper>());
}
private static IQueryable SelectExpandInternal <T>(ODataQuery <T> query, string selectText, string expandText,
string entitySetName)
{
SelectExpandHelper <T> helper = new SelectExpandHelper <T>(
new ODataRawQueryOptions {
Select = selectText, Expand = expandText
},
query,
entitySetName);
helper.AddAutoSelectExpandProperties();
var result = helper.Apply(query);
// In case of SelectExpand ,method was called to convert to ISelectExpandWrapper without actually applying $select and $expand params
if (result == query && selectText == null && expandText == null)
{
return(SelectExpandInternal(query, "*", expandText, entitySetName));
}
return(result);
}
