public string TranslateSelectExpandClause(SelectExpandClause selectExpandClause, bool firstFlag)
{
ExceptionUtils.CheckArgumentNotNull(selectExpandClause, "selectExpandClause");
List <string> selectList = selectExpandClause.GetCurrentLevelSelectList();
string selectClause = null;
if (selectList.Any())
{
selectClause = String.Join(ODataConstants.ContextUriProjectionPropertySeparator, selectList.ToArray());
}
selectClause = string.IsNullOrEmpty(selectClause) ? null : string.Concat("$select", ExpressionConstants.SymbolEqual, isFirstSelectItem ? Uri.EscapeDataString(selectClause) : selectClause);
isFirstSelectItem = false;
string expandClause = null;
foreach (ExpandedNavigationSelectItem expandSelectItem in selectExpandClause.SelectedItems.OfType <ExpandedNavigationSelectItem>())
{
if (string.IsNullOrEmpty(expandClause))
{
expandClause = firstFlag ? expandClause : string.Concat("$expand", ExpressionConstants.SymbolEqual);
}
else
{
expandClause += ExpressionConstants.SymbolComma;
}
expandClause += this.Translate(expandSelectItem);
}
if (string.IsNullOrEmpty(expandClause))
{
return(selectClause);
}
else
{
if (firstFlag)
{
return(string.IsNullOrEmpty(selectClause) ? string.Concat("$expand=", Uri.EscapeDataString(expandClause)) : string.Concat(selectClause, "&$expand=", Uri.EscapeDataString(expandClause)));
}
else
{
return(string.IsNullOrEmpty(selectClause) ? expandClause : string.Concat(selectClause, ";" + expandClause));
}
}
}
/// <summary>
/// Build the expand clause for a given level in the selectExpandClause
/// </summary>
/// <param name="selectExpandClause">the current level select expand clause</param>
/// <param name="firstFlag">whether is inner SelectExpandClause</param>
/// <returns>the select and expand segment for context url in this level.</returns>
public string TranslateSelectExpandClause(SelectExpandClause selectExpandClause, bool firstFlag)
{
ExceptionUtils.CheckArgumentNotNull(selectExpandClause, "selectExpandClause");
List <string> selectList = selectExpandClause.GetCurrentLevelSelectList();
string selectClause = null;
string expandClause = null;
if (selectList.Any())
{
selectClause = String.Join(ODataConstants.ContextUriProjectionPropertySeparator, selectList.ToArray());
}
foreach (SelectItem selectItem in selectExpandClause.SelectedItems)
{
if (selectItem is PathSelectItem pathSelectItem)
{
selectClause += this.Translate(pathSelectItem);
}
else if (selectItem.GetType() == typeof(ExpandedNavigationSelectItem))
{
if (string.IsNullOrEmpty(expandClause))
{
expandClause = firstFlag ? expandClause : string.Concat(ExpressionConstants.QueryOptionExpand, ExpressionConstants.SymbolEqual);
}
else
{
expandClause += ExpressionConstants.SymbolComma;
}
expandClause += this.Translate((ExpandedNavigationSelectItem)selectItem);
}
else if (selectItem.GetType() == typeof(ExpandedReferenceSelectItem))
{
if (string.IsNullOrEmpty(expandClause))
{
expandClause = firstFlag ? expandClause : string.Concat(ExpressionConstants.QueryOptionExpand, ExpressionConstants.SymbolEqual);
}
else
{
expandClause += ExpressionConstants.SymbolComma;
}
expandClause += this.Translate((ExpandedReferenceSelectItem)selectItem) + ODataConstants.UriSegmentSeparator + ODataConstants.EntityReferenceSegmentName;
}
}
selectClause = string.IsNullOrEmpty(selectClause) ? null : string.Concat(ExpressionConstants.QueryOptionSelect, ExpressionConstants.SymbolEqual, firstFlag ? Uri.EscapeDataString(selectClause) : selectClause);
if (string.IsNullOrEmpty(expandClause))
{
return(selectClause);
}
else
{
if (firstFlag)
{
return(string.IsNullOrEmpty(selectClause) ? string.Concat(ExpressionConstants.QueryOptionExpand, ExpressionConstants.SymbolEqual, Uri.EscapeDataString(expandClause)) : string.Concat(selectClause, ExpressionConstants.SymbolQueryConcatenate, ExpressionConstants.QueryOptionExpand, ExpressionConstants.SymbolEqual, Uri.EscapeDataString(expandClause)));
}
else
{
return(string.IsNullOrEmpty(selectClause) ? expandClause : string.Concat(selectClause, ";" + expandClause));
}
}
}