/// <summary>
/// This function populates the Select and Expand field lists in the class from reading the data from the
/// Odata URI. <see cref="SelectExpandClause"/>
/// </summary>
private void PopulateSelectAndExpandQueryFields(string queryString)
{
var pathSelectedItems = ODataUri.SelectAndExpand.SelectedItems;
foreach (var item in pathSelectedItems)
{
switch (item)
{
//its a select query
case PathSelectItem pathSelectItem:
SelectFieldList.Add(pathSelectItem.SelectedPath.FirstSegment.Identifier);
break;
//its an expand query
case ExpandedNavigationSelectItem expandedNavigationSelectItem:
//get the string from the start of the navigation source name.
ExpandFieldExpression = queryString.Substring(queryString.IndexOf(expandedNavigationSelectItem.NavigationSource.Name, StringComparison.Ordinal));
//check if there are other queries present and chunk them off to remain with only the expand parameter
var index = ExpandFieldExpression.IndexOf("&", StringComparison.Ordinal);
if (index > 0)
{
ExpandFieldExpression = ExpandFieldExpression.Substring(0, index);
}
break;
}
}
}
/// <summary>
/// This function populates the Select and Expand field lists in the class from reading the data from the
/// Odata URI. <see cref="SelectExpandClause"/>
/// </summary>
protected override void PopulateSelectAndExpandQueryFields(string queryString)
{
if (ODataUri.SelectAndExpand == null)
{
return;
}
var pathSelectedItems = ODataUri.SelectAndExpand.SelectedItems;
foreach (var item in pathSelectedItems)
{
switch (item)
{
//its a select query
case PathSelectItem pathSelectItem:
SelectFieldList.Add(pathSelectItem.SelectedPath.FirstSegment.Identifier);
break;
//its an expand query
case ExpandedNavigationSelectItem expandedNavigationSelectItem:
if (!string.IsNullOrEmpty(ExpandFieldExpression))
{
break; // multiple expand parameters will result in this case being processed multiple times. So don't do it again if we already did it the first time.
}
//get the string from the start of the navigation source name.
ExpandFieldExpression = queryString.Substring(queryString.IndexOf(expandedNavigationSelectItem.PathToNavigationProperty.First().Identifier, StringComparison.Ordinal));
//check if there are other queries present and chunk them off to remain with only the expand parameter
var index = ExpandFieldExpression.IndexOf("&", StringComparison.Ordinal);
if (index > 0)
{
ExpandFieldExpression = ExpandFieldExpression.Substring(0, index);
}
break;
}
}
}
