private static IQueryable <T> OrderByClause <T>(this IQueryable <T> query, QueryDataOptions <T> options)
{
if (options?.OrderBy == null)
{
return(query);
}
return(query.OrderBy(options.OrderBy));
}
private static IQueryable <T> FilterClause <T>(this IQueryable <T> query, QueryDataOptions <T> options)
{
if (options?.Filter == null)
{
return(query);
}
return(query.Where(options.Filter));
}
private static IQueryable <T> TopClause <T>(this IQueryable <T> query, QueryDataOptions <T> options)
{
var rawTop = string.IsNullOrEmpty(options.Top) ? "250" : options.Top;
int top = 0;
var success = int.TryParse(rawTop, out top);
if (!success)
{
return(query);
}
return(query.Take(top));
}
private static IQueryable <T> SkipClause <T>(this IQueryable <T> query, QueryDataOptions <T> options)
{
if (options.Skip == null)
{
return(query);
}
int skip = 0;
var success = int.TryParse(options.Skip, out skip);
if (!success)
{
return(query);
}
return(query.Skip(skip));
}
public static int QueryDataCount <T>(this IQueryable <T> query, QueryDataOptions <T> options)
{
if (options?.Count == null)
{
return(0);
}
bool showCount = false;
var success = bool.TryParse(options.Count, out showCount);
if (!success || !showCount)
{
return(0);
}
return(query.FilterClause(options).Count());
}
public static IQueryable <T> QueryDataOptions <T>(this IQueryable <T> query, QueryDataOptions <T> options)
{
return(query.FilterClause(options).OrderByClause(options).SkipClause(options).TopClause(options));
}
