// Overrides
public override Expression VisitInvocationExpression(InvocationQuerySyntaxNode node)
{
if (string.Equals(node.Name, QuerySyntaxHelper.AscMethodName, StringComparison.OrdinalIgnoreCase))
{
var ascProperties = node.Arguments.Select(Visit)
.OfType <MemberExpression>()
.Select(i => new KeyValuePair <Expression, DocumentSortOrder>(Expression.Lambda(QuerySyntaxHelper.Convert(i, typeof(object)), Parameter), DocumentSortOrder.Asc))
.ToArray();
return(Expression.Constant(ascProperties));
}
if (string.Equals(node.Name, QuerySyntaxHelper.DescMethodName, StringComparison.OrdinalIgnoreCase))
{
var descProperties = node.Arguments.Select(Visit)
.OfType <MemberExpression>()
.Select(i => new KeyValuePair <Expression, DocumentSortOrder>(Expression.Lambda(QuerySyntaxHelper.Convert(i, typeof(object)), Parameter), DocumentSortOrder.Desc))
.ToArray();
return(Expression.Constant(descProperties));
}
return(base.VisitInvocationExpression(node));
}
private static Expression CreateAnyFilterForArrayProperty(ExpressionFilterQuerySyntaxVisitor visitor, InvocationQuerySyntaxNode node, Func <Expression, Expression, Expression> filter)
{
// filter(arrayProperty, item) --> Enumerable.Any(i.arrayProperty, ii => filter(ii, item))
var arrayProperty = visitor.Visit(node.Arguments[0]);
var item = visitor.Visit(node.Arguments[1]);
var itemType = QuerySyntaxHelper.GetCollectionItemType(arrayProperty.Type);
var itemParameter = Expression.Parameter(itemType);
return(QuerySyntaxHelper.InvokeAny(itemType, arrayProperty, Expression.Lambda(QuerySyntaxHelper.Compare(itemParameter, item, filter), itemParameter)));
}