private Expression CreateFilterExpression(out EvoQLExpression parse, out ParameterExpression parameter, Type elementType)
{
parse = ParseQuery();
var root = parse.Tree;
if (root is GetExpression)
{
var get = (GetExpression)root;
get.ElementType = elementType;
var expression = get.CreateExpression(null);
parameter = Expression.Parameter(elementType, "x");
if (expression == null)
{
return(null);
}
return(ParameterRebinder.ReplaceParameters(expression, "x", parameter));
}
parameter = null;
return(null);
}
public Expression GetPagingExpression(Type itemType)
{
EvoQLExpression parse = ParseQuery();
if (parse.Tree is GetExpression)
{
GetExpression get = (GetExpression)parse.Tree;
var res = ReduceExpressionGeneration.GetPagingExpression(get, itemType);
return(res);
//return new ExpressionResult { Expression = res, Collections = GetCollections(parse) };
}
return(null);
}
private EvoQLExpression ParseQuery()
{
var parse = new EvoQLExpression(_query);
if (parse.HadErrors)
{
string errorString = "EvoQL Error For: ";
errorString += _query;
errorString += "\n";
foreach (string error in parse.Errors)
{
errorString += error + "\n";
}
throw new EvoQLException(errorString);
}
parse.Tree.Init();
return(parse);
}