private string GetNameFromArgument(Expression argument)
{
if (argument is ConstantExpression constantExpression)
{
return(constantExpression.Value.ToString());
}
if (JavascriptConversionExtensions.IsWrappedConstantExpression(argument))
{
LinqPathProvider.GetValueFromExpressionWithoutConversion(argument, out var value);
return(value.ToString());
}
if (argument is ParameterExpression p)
{
Parameters ??= new List <string>();
Parameters.Add(p.Name);
return(p.Name);
}
throw new InvalidOperationException("Invalid TimeSeries argument " + argument);
}
protected override Expression VisitMember(MemberExpression node)
{
if (node.Expression is MemberExpression innerMember &&
IsWhereAlias(innerMember.Expression) &&
innerMember.Member.Name == "Value" &&
innerMember.Type != typeof(double))
{
// e.g. 'Where(entry => entry.Value.NamedVal ... )'
// do not include 'entry.Value' in generated RQL, just 'NamedVal'
return(Expression.Parameter(node.Type, node.Member.Name));
}
if (IsWhereAlias(node.Expression))
{
return(Expression.Parameter(node.Type, node.Member.Name));
}
if (JavascriptConversionExtensions.IsWrappedConstantExpression(node))
{
return(AddAsQueryParameter(node));
}
return(base.VisitMember(node));
}
