private bool ContinuePathExpression(string token, QueryTranslator q)
{
expectingPathContinuation = false;
PathExpressionParser.CollectionElement element = pathExpressionParser.LastCollectionElement();
if (token.StartsWith("."))
{
// the path expression continues after a ]
DoPathExpression(GetElementName(element, q) + token, q); // careful with this!
AddToCurrentJoin(element);
return(true); //NOTE: EARLY EXIT!
}
else
{
// the path expression ends at the ]
if (element.ElementColumns.Length != 1)
{
throw new QueryException("path expression ended in composite collection element");
}
AppendToken(q, element.ElementColumns[0]);
AddToCurrentJoin(element);
return(false);
}
}
private string GetElementName(PathExpressionParser.CollectionElement element, QueryTranslator q)
{
string name;
if (element.IsOneToMany)
{
name = element.Alias;
}
else
{
IType type = element.Type;
if (type.IsEntityType)
{
//ie. a many-to-many
string clazz = ((EntityType)type).GetAssociatedEntityName();
name = pathExpressionParser.ContinueFromManyToMany(clazz, element.ElementColumns, q);
}
else
{
throw new QueryException("illegally dereferenced collection element");
}
}
return(name);
}
private void AddToCurrentJoin(PathExpressionParser.CollectionElement ce)
{
try
{
AddToCurrentJoin(ce.JoinSequence.ToJoinFragment().ToWhereFragmentString + ce.IndexValue.ToSqlString());
}
catch (MappingException me)
{
throw new QueryException(me);
}
}
/// <summary>
///
/// </summary>
/// <param name="q"></param>
public void End(QueryTranslator q)
{
if (expectingPathContinuation)
{
expectingPathContinuation = false;
PathExpressionParser.CollectionElement element = pathExpressionParser.LastCollectionElement();
if (element.ElementColumns.Length != 1)
{
throw new QueryException("path expression ended in composite collection element");
}
AppendToken(q, element.ElementColumns[0]);
AddToCurrentJoin(element);
}
Token(StringHelper.ClosedParen, q);
}
