/// <summary>
/// Creates a Where method call expression to be invoked on an expression e.g. (parameter, member, method call) of type IQueryable<T>.
/// </summary>
/// <typeparam name="TSource"></typeparam>
/// <param name="expression"></param>
/// <param name="filterGroup"></param>
/// <param name="parameterName"></param>
/// <returns></returns>
public static MethodCallExpression GetWhere <TSource>(this Expression expression, DataSource.FilterGroup filterGroup) where TSource : class
{
LambdaExpression filterExpression = filterGroup.GetFilterExpression <TSource>();
Type[] genericArgumentsForMethod = new Type[] { typeof(TSource) };
return(Expression.Call(typeof(Queryable), "Where", genericArgumentsForMethod, expression, filterExpression));
}
private static Expression <Func <T, bool> > _GetFilterExpression <T>(this FilterGroup filterGroup, string parameterName = "f") where T : class => filterGroup.GetFilterExpression <T>(parameterName);
