protected virtual void AppendToken(QueryTranslator q, SqlString token)
{
if (expectingIndex > 0)
{
pathExpressionParser.SetLastCollectionElementIndexValue(token);
}
else
{
q.AppendWhereToken(token);
}
}
protected virtual void AppendToken(QueryTranslator q, string token)
{
if (expectingIndex > 0)
{
pathExpressionParser.SetLastCollectionElementIndexValue(new SqlString(token));
}
else
{
// a String.Empty can get passed in here. If that occurs
// then don't create a new SqlString for it - just ignore
// it since it adds nothing to the sql being generated.
if (!string.IsNullOrEmpty(token))
{
q.AppendWhereToken(new SqlString(token));
}
}
}
private void DoToken(string token, QueryTranslator q)
{
if (q.IsName(StringHelper.Root(token))) //path expression
{
DoPathExpression(q.Unalias(token), q);
}
else if (token.StartsWith(ParserHelper.HqlVariablePrefix)) //named query parameter
{
q.AddNamedParameter(token.Substring(1));
// this is only a temporary parameter to help with the parsing of hql -
// when the type becomes known then this will be converted to its real
// parameter type.
AppendToken(q, new SqlString(new object[] { new Parameter(StringHelper.SqlParameter) }));
}
else if (token.Equals(StringHelper.SqlParameter))
{
//if the token is a "?" then we have a Parameter so convert it to a SqlCommand.Parameter
// instead of appending a "?" to the WhereTokens
q.AppendWhereToken(new SqlString(new object[] { new Parameter(StringHelper.SqlParameter) }));
}
else
{
IQueryable persister = q.GetPersisterUsingImports(token);
if (persister != null) // the name of a class
{
object discrim = persister.DiscriminatorSQLValue;
if (InFragment.Null == discrim || InFragment.NotNull == discrim)
{
throw new QueryException("subclass test not allowed for null or not null discriminator");
}
AppendToken(q, discrim.ToString());
}
else
{
object constant;
string fieldName = null;
string typeName = null;
string importedName = null;
int indexOfDot = token.IndexOf(StringHelper.Dot);
// don't even bother to do the lookups if the indexOfDot is not
// greater than -1. This will save all the string modifications.
// This allows us to resolve to the full type before obtaining the value e.g. FooStatus.OFF -> NHibernate.Model.FooStatus.OFF
if (indexOfDot > -1)
{
fieldName = StringHelper.Unqualify(token);
typeName = StringHelper.Qualifier(token);
importedName = q.factory.GetImportedClassName(typeName);
}
if (indexOfDot > -1 &&
(constant = ReflectHelper.GetConstantValue(importedName, fieldName)) != null)
{
// need to get the NHibernate Type so we can convert the Enum or field from
// a class into it's string representation for hql.
IType type;
try
{
type = TypeFactory.HeuristicType(constant.GetType().AssemblyQualifiedName);
}
catch (MappingException me)
{
throw new QueryException(me);
}
if (type == null)
{
throw new QueryException(string.Format("Could not determin the type of: {0}", token));
}
try
{
AppendToken(q, (( ILiteralType )type).ObjectToSQLString(constant));
}
catch (Exception e)
{
throw new QueryException("Could not format constant value to SQL literal: " + token, e);
}
}
else
{
//anything else
string negatedToken = negated ? ( string )negations[token.ToLower(System.Globalization.CultureInfo.InvariantCulture)] : null;
if (negatedToken != null && (!betweenSpecialCase || !"or".Equals(negatedToken)))
{
AppendToken(q, negatedToken);
}
else
{
AppendToken(q, token);
}
}
}
}
}