protected override Expression VisitMethodCall(MethodCallExpression node)
{
if (node.Arguments.Count != 2)
{
throw Utils.NotSupportedExpression(node);
}
var association = AddNestedExpandAssociationAndGetDeepestChild(node.Arguments[0]);
switch (node.Method.Name)
{
case "Select":
{
association.ExpandAssociations.AddRange(ExtractNestedExpandAssociations(node.Arguments[1]));
return(node);
}
case "OrderBy":
case "ThenBy":
{
if ((node.Arguments[0] as MethodCallExpression)?.Method.Name == "Select")
{
throw Utils.NotSupportedExpression(node);
}
association.OrderByColumns
.AddRange(node.Arguments[1]
.ExtractColumnNames(_typeCache).Select(c => new ODataOrderByColumn(c, false)));
return(node);
}
case "OrderByDescending":
case "ThenByDescending":
{
if ((node.Arguments[0] as MethodCallExpression)?.Method.Name == "Select")
{
throw Utils.NotSupportedExpression(node);
}
association.OrderByColumns
.AddRange(node.Arguments[1]
.ExtractColumnNames(_typeCache).Select(c => new ODataOrderByColumn(c, true)));
return(node);
}
case "Where":
{
var filterExpression =
ODataExpression.FromLinqExpression((node.Arguments[1] as LambdaExpression)?.Body);
if (ReferenceEquals(association.FilterExpression, null))
{
association.FilterExpression = filterExpression;
}
else
{
association.FilterExpression = association.FilterExpression && filterExpression;
}
return(node);
}
default:
throw Utils.NotSupportedExpression(node);
}
}
public FT Filter(Expression <Func <T, bool> > expression)
{
this.Command.Filter(ODataExpression.FromLinqExpression(expression.Body));
return(this as FT);
}
public FT QueryOptions <U>(Expression <Func <U, bool> > expression)
{
this.Command.QueryOptions(ODataExpression.FromLinqExpression(expression.Body));
return(this as FT);
}
public IBoundClient <T> Filter(Expression <Func <T, bool> > expression)
{
this.Command.Filter(ODataExpression.FromLinqExpression(expression.Body));
return(this);
}
