/// <summary>
/// Parse the selection clause
/// </summary>
/// <param name="properties">The select properties clause</param>
/// <param name="source"></param>
/// <param name="suffix"></param>
/// <typeparam name="T"></typeparam>
/// <returns></returns>
public static IQueryable <T> ParseSelect <T>(string properties, IQueryable <T> source, string paramName = null)
where T : class, new()
{
if (String.IsNullOrEmpty(properties) || properties.Equals("*"))
{
return(source);
}
LinqSelectParser parser = new LinqSelectParser();
List <SelectEntry> props = parser.ParsePropertyNames(properties.Replace(" ", String.Empty));
Expression <Func <T, T> > expression = (Expression <Func <T, T> >)parser.Process <T, T>(props, typeof(T), typeof(T), paramName);
return(source.Select <T, T>(expression));
}
public IQueryable <T> Parse <T>(IFilter filter, IQueryable <T> source) where T : class, new()
{
//parse where clause
source = LinqWhereExpressionBuilder.Parse <T>(filter.Where, source, filter.As);
//parse the include clause
source = LinqIncludeParser.Parse <T>(filter.With, source, filter.As);
//parse the order clause
source = LinqOrderParser.ParseOrder <T>(filter.OrderBy, source);
//parse the pagination
source = LinqLimitParser.ParseLimit <T>(filter.Skip, filter.Take, source);
//parse the select clause
source = LinqSelectParser.ParseSelect <T>(filter.Properties, source, filter.As);
//return the result
return(source);
}
