/// <summary>
///
/// </summary>
/// <param name="token"></param>
/// <param name="q"></param>
public void Token(string token, QueryTranslator q)
{
string lctoken = token.ToLower(System.Globalization.CultureInfo.InvariantCulture);
if (first)
{
first = false;
if (lctoken.Equals("distinct"))
{
q.Distinct = true;
return;
}
else if (lctoken.Equals("all"))
{
q.Distinct = false;
return;
}
}
if (afterNew)
{
afterNew = false;
holderClass = q.GetImportedClass(token);
if (holderClass == null)
{
throw new QueryException("class not found: " + token);
}
q.HolderClass = holderClass;
insideNew = true;
}
else if (token.Equals(StringHelper.Comma))
{
if (ready)
{
throw new QueryException("alias or expression expected in SELECT");
}
q.AppendScalarSelectToken(StringHelper.CommaSpace);
ready = true;
}
else if ("new".Equals(lctoken))
{
afterNew = true;
ready = false;
}
else if (StringHelper.OpenParen.Equals(token))
{
if (!aggregate && holderClass != null && !ready)
{
//opening paren in new Foo ( ... )
ready = true;
}
else if (aggregate)
{
q.AppendScalarSelectToken(token);
}
else
{
throw new QueryException("aggregate function expected before ( in SELECT");
}
ready = true;
}
else if (StringHelper.ClosedParen.Equals(token))
{
if (insideNew && !aggregate && !ready)
{
//if we are inside a new Result(), but not inside a nested function
insideNew = false;
}
else if (aggregate && ready)
{
q.AppendScalarSelectToken(token);
aggregateFuncTokenList.RemoveAt(0);
if (aggregateFuncTokenList.Count < 1)
{
aggregate = false;
ready = false;
}
}
else
{
throw new QueryException("( expected before ) in select");
}
}
else if (countArguments.Contains(lctoken))
{
if (!ready || !aggregate)
{
throw new QueryException(token + " only allowed inside aggregate function in SELECT");
}
q.AppendScalarSelectToken(token);
if ("*".Equals(token))
{
q.AddSelectScalar(NHibernateUtil.Int32);
} //special case
}
else if (GetFunction(lctoken, q) != null && token == q.Unalias(token))
{
// the name of an SQL function
if (!ready)
{
throw new QueryException(", expected before aggregate function in SELECT: " + token);
}
aggregate = true;
aggregateAddSelectScalar = true;
aggregateFuncTokenList.Insert(0, lctoken);
ready = false;
q.AppendScalarSelectToken(token);
if (!AggregateHasArgs(lctoken, q))
{
q.AddSelectScalar(AggregateType(aggregateFuncTokenList, null, q));
if (!AggregateFuncNoArgsHasParenthesis(lctoken, q))
{
aggregateFuncTokenList.RemoveAt(0);
if (aggregateFuncTokenList.Count < 1)
{
aggregate = false;
ready = false;
}
else
{
ready = true;
}
}
}
}
else if (aggregate)
{
bool constantToken = false;
if (!ready)
{
throw new QueryException("( expected after aggregate function in SELECT");
}
try
{
ParserHelper.Parse(aggregatePathExpressionParser, q.Unalias(token), ParserHelper.PathSeparators, q);
}
catch (QueryException)
{
constantToken = true;
}
if (constantToken)
{
q.AppendScalarSelectToken(token);
}
else
{
if (aggregatePathExpressionParser.IsCollectionValued)
{
q.AddCollection(
aggregatePathExpressionParser.CollectionName,
aggregatePathExpressionParser.CollectionRole);
}
q.AppendScalarSelectToken(aggregatePathExpressionParser.WhereColumn);
if (aggregateAddSelectScalar)
{
q.AddSelectScalar(AggregateType(aggregateFuncTokenList, aggregatePathExpressionParser.WhereColumnType, q));
aggregateAddSelectScalar = false;
}
aggregatePathExpressionParser.AddAssociation(q);
}
}
else
{
if (!ready)
{
throw new QueryException(", expected in SELECT");
}
ParserHelper.Parse(pathExpressionParser, q.Unalias(token), ParserHelper.PathSeparators, q);
if (pathExpressionParser.IsCollectionValued)
{
q.AddCollection(
pathExpressionParser.CollectionName,
pathExpressionParser.CollectionRole);
}
else if (pathExpressionParser.WhereColumnType.IsEntityType)
{
q.AddSelectClass(pathExpressionParser.SelectName);
}
q.AppendScalarSelectTokens(pathExpressionParser.WhereColumns);
q.AddSelectScalar(pathExpressionParser.WhereColumnType);
pathExpressionParser.AddAssociation(q);
ready = false;
}
}