public override void Validate(FilterQueryOption filterQueryOption, ODataValidationSettings settings)
{
if (filterQueryOption.FilterClause.Expression.Kind == Microsoft.OData.UriParser.QueryNodeKind.BinaryOperator)
{
Microsoft.OData.UriParser.BinaryOperatorNode expr = filterQueryOption.FilterClause.Expression as Microsoft.OData.UriParser.BinaryOperatorNode;
SingleValuePropertyAccessNode left = expr.Left as SingleValuePropertyAccessNode;
if (left != null)
{
string propertyName = left.Property.Name;
if (!ValidateFilterProperties(propertyName))
{
throw new ODataException(string.Format("{0} cannot be used for filtering", propertyName));
}
}
}
}
private string BindBinaryOperatorNode(BinaryOperatorNode binaryOperatorNode)
{
var left = Bind(binaryOperatorNode.Left);
var node = binaryOperatorNode.Left as SingleValueFunctionCallNode;
if (node != null &&
node.Name == "indexof")
{
return("(" + left + ")");
}
var right = Bind(binaryOperatorNode.Right);
if (right != null && right.Trim() == " Null ".Trim() && (binaryOperatorNode.Right is ConvertNode))
{
if (((binaryOperatorNode.Right as ConvertNode).Source as ConstantNode).Value == null)
{
return("(" + left + (binaryOperatorNode.OperatorKind == BinaryOperatorKind.Equal ? " Is " : " Is not ") + " " + right + ")");
}
}
return("(" + left + " " + ToString(binaryOperatorNode.OperatorKind) + " " + right + ")");
}